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News from Members (2011)

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Environment Canada: A Year in Review - 2011 Weather Stories
Posted 23 December 2011

From floods to fire, melting Arctic seas, heat waves, blizzards, hurricanes and tornados - 2011 was a weather year to remember. Canadians from coast to coast to coast were affected by this year's weather extremes and their insurance companies reported the second most expensive year for weather losses.



Finnish Meteorological Institute: European Atlas on Adverse Weather for Transport
Posted 22 December 2011

Photo: Eevu Heikura The Finnish Meteorological Institute together with other four European research institutes has constructed a European atlas on the probabilities and occurrence of adverse weather events for transport. Conceivable impacts of global climate change on the occurrence of these events were also studied.

The EWENT project (Extreme Weather impacts on European Networks of Transport) funded by the European Commission under the 7th Framework Programme (Transport, Horizontal Activities) has the objective of assessing the impact of extreme weather on the European transport system. The work is coordinated by VTT Technical Research Centre of Finland.

Bureau of Meteorology of Australia: La Niña continues over the Pacific Basin
Posted 23 December 2011

La Niña remains in place across the tropical Pacific, though the majority of climate models surveyed by the Bureau suggest the La Niña may be near its peak. While the event is likely to persist through the remainder of summer, a gradual decline in the strength of the La Niña is expected over the coming months.

La Niña periods are usually, but not always, associated with above normal rainfall during the second half of the year and summer across large parts of Australia, particularly the eastern and northern regions. Daytime temperatures are typically cooler than average and tropical cyclone risk for northern Australia increases during the cyclone season (November to April), with February and March the peak. For detailed rainfall and temperature outlooks, please see:



Meteo Suisse: Bulletin climatologique annuel 2011
Posted 23 December 2011

Avec un excédent thermique de 2 degrés, l'année 2011 en Suisse fut marquée par la température moyenne annuelle la plus élevée depuis le début des mesures en 1864. Elle fut aussi nettement trop sèche sur l'ensemble du pays et extrêmement ensoleillée. Les 4 premiers mois de l'année furent exceptionnellement doux et extrêmement secs. Le printemps 2011 fut le plus chaud depuis le début des mesures il y a quelque 150 ans. Au Tessin, des journées tropicales furent enregistrées en avril déjà. Après un été caractérisé par un temps changeant avec des températures nettement trop fraîches en juillet, la Suisse connut son deuxième automne le plus chaud depuis le début des mesures. Le mois de novembre fut même caractérisé par des records de sécheresse au Nord et des records de chaleur en montagne. Dans les stations d'altitude, de grandes quantités de neige tombèrent en septembre et en octobre, puis à nouveau vers la mi-décembre où la neige fut aussi observée pour la première fois en plaine.



AEMET: 2011, el año más cálido de la serie histórica
Posted 23 December 2011

El año 2011 está teniendo un carácter extremadamente cálido, con una temperatura media de 16,7 ºC, que supera en 1,49 ºC al valor medio (período 1971-2000), siendo el año más cálido de la serie histórica, a de 30 de noviembre, con una temperatura media ligeramente por encima de la del año 2006 que era el más cálido, con 16,67 ºC. En cuanto a precipitaciones, llovió un 7% menos de lo normal.

El año está resultando muy cálido a extremadamente cálido en prácticamente toda España. Solamente en Baleares y parte de Canarias las anomalías térmicas, aunque positivas en todo caso, no alcanzan el valor de +1º C. En el resto de España el valor de la anomalía media oscila entre +1º C y 2º C, alcanzando los valores más elevados, en torno a +2º C, en el sur de Castilla-La Mancha y algunas zonas del País Vasco y Cataluña



KNMI (Netherlands) Annual report
Posted 23 December 2011

KNMI is an institute where we are working all year round, seven days a week, 24 hours a day. In the Annual Report 2010 entitled 'KNMI round the clock' we show what is going on in one day at KNMI. After all, weather forecasts don’t stop at night, climate research is going on all time long at the other end of the world and earthquakes also happen in the middle of the night.



JMA: Annual report on the Activities on RSMC Tokyo Typhoon Center 2010
Posted 23 December 2011

The RSMC Tokyo - Typhoon Center (referred to below as the Center) is a Regional Specialized Meteorological Centre (RSMC) that carries out specialized activities in analysis, tracking and forecasting of western North Pacific tropical cyclones (TCs) within the framework of the World Weather Watch (WWW) Programme of the World Meteorological Organization (WMO). The Center was established at the headquarters of the Japan Meteorological Agency (JMA) in July 1989, following a designation by the WMO Executive Council at its 40th session (Geneva, June 1988).



NOAA: Extreme Weather 2011
Posted 8 December 2011

From extreme drought, heat waves and floods to unprecedented tornado outbreaks, hurricanes, wildfires and winter storms, a record 12 weather and climate disasters in 2011 each caused $1 billion or more in damages — and most regrettably, loss of human lives and property. NOAA's National Weather Service has redoubled its efforts to create a "Weather-Ready Nation", where vulnerable communities are better prepared for extreme weather and other natural disasters.



Australia Bureau of Meteorology: La Niña continues across the Pacific Basin
Posted 8 December 2011

La Niña conditions strengthened across the tropical Pacific Basin during November. Climate models surveyed by the Bureau suggest the La Niña is likely to peak during the next month and last at least until the end of summer.

Atmospheric indicators of ENSO, including the Southern Oscillation Index (SOI), trade winds and cloudiness, all displayed some strengthening over the past fortnight, with the current SOI value of +15 being the highest since the breakdown of the 2010-11 event in May 2011. Similarly, the classic La Niña ocean patterns in the tropical Pacific have become more clearly defined over the past month. Despite this strengthening, the La Niña remains weaker than at the same time in 2010. Australia’s climate has responded to these recent changes, with above average rainfall across large parts of the north and west of the country since October.



UK Met Office: New climate change assessment report
Posted 7 December 2011

The results of a major new scientific assessment of climate change were published today, highlighting the changes the world has already seen and the impacts it could face if global temperature changes are not limited.The assessment commissioned by Chris Huhne, the UK's Secretary of State for Energy and Climate Change, and lead by the Met Office Hadley Centre studied 24 different countries, from developed to developing. It notes that all the countries in the study have warmed since the 1960s and that the occurrence of extremely warm temperatures has increased whilst extremely cold temperatures have become less frequent.

If emissions are left unchecked, the report says temperatures would rise generally between three and five degrees Celsius this century. This could be accompanied by significant changes in rainfall patterns, leading in many cases to increased pressure on crop production, water stress and flood risks.



The weather in Germany in Nov 2011: The driest month since records began in 1881
Posted 7 December 2011

Offenbach, 29 November 2011 – In November 2011, the weather in Germany was extremely mild but most of all the driest on record and for most parts an extremely sunny month. A large number of measuring stations did not record one single drop of rain. The mountains, in particular, enjoyed plenty of sunshine and warm temperatures as a result of the high atmospheric pressure, which remained over central Europe for some weeks. In contrast, the weather in lowland areas was often misty, overcast and cold. It was not until the end of the month that a storm depression over Scandinavia came from the north to end the stable high pressure system, as the initial analysis by the Deutscher Wetterdienst (DWD) of data from its around 2,000 weather stations shows.



THE WEATHER OF AUTUMN 2011: Warm but dull; wet in most places - The Irish Meteorological Service Online
Posted on 2 December 2011

All mean air temperatures for Autumn were above normal, with differences above average ranging from 1°C at Cork Airport to 2.2°C at Casement Aerodrome. All three months of the season recorded higher than normal temperatures, with November having the greatest differences above average. Most stations in the east and midlands reported Autumn 2011 as the warmest on record, with Phoenix Park reporting an Autumnal mean temperature of 12.2°C, its warmest in over 150 years. Mean air temperature differences in the south and southwest were less, but it was still the warmest in a number of years at Shannon Airport and Roche’s Point, both recording their warmest Autumns since 2001 (10 years) and 2006 (5 years), respectively. All remaining Atlantic coastal stations were above average for the season, but were not as warm as the Autumn of 2007.



MeteoSuisse: 2011 - année la plus chaude depuis le début des mesures ?
Posted on 2 December 2011

Evolution des températures de janvier à novembre

L'année 2011 a été jusqu'à présent nettement trop chaude ; au printemps le plus chaud jamais enregistré a fait suite le deuxième automne le plus chaud depuis le début des mesures. Quant à l'été, s'il fut ressenti en maints endroits comme frais et maussade, il fut lui aussi - en moyenne nationale - supérieur aux normes 1961-1990. Sur les 11 derniers mois, 10 présentèrent des températures supérieures aux normes ; seul le mois de juillet enregistra un déficit.

Novembre 2011 fut un mois caractérisé par de nombreux records. Ce fut le mois de novembre le plus sec depuis le début des mesures il y a quelque 150 ans pour de nombreuses régions de Suisse. Sur les sommets montagneux, il s’agit du mois de novembre le plus chaud. Le foehn fut à l’origine de la journée la plus chaude de novembre à Altdorf et de la nuit la plus chaude en novembre à Glaris. Enfin, ce fut le mois de novembre le plus ensoleillé à Coire. >> More


La temporada invernal 2011 será ligeramente más fría y más seca que en 2010 - SERVICIO METEOROLÓGICO NACIONAL, MÉXICO
Posted on 2 December 2011

Los sistemas de calentamiento para evitar accidentes y daños a la salud Para la temporada invernal 2011 se pronosticaron 40 frentes fríos, de los cuales 15 ya se registraron y uno más se dirige a territorio mexicano, informó José Luis Luege Tamargo, Director General de la Comisión Nacional del Agua (Conagua), quien adelantó que la época será ligeramente más fría y más seca que en años anteriores. En conferencia de prensa conjunta, José Luis Luege y Laura Gurza Jaidar, Coordinadora Nacional del Sistema Nacional de Protección Civil de la Secretaría de Gobernación, recomendaron a la población abrigarse muy bien y extremar precauciones con los sistemas de calentamiento para evitar accidentes y daños a la salud por intoxicaciones y quemaduras, los cuales son recurrentes durante la temporada invernal. >> More


Parution des bilans climatiques provisoires de l'automne et l'année 2011 - MétéoFrance
Posted on 2 December 2011

L null es bilans climatologiques provisoires de l'automne et l'année 2011 en France métropolitaine ont été publiés le mardi 29 novembre 2011. La France a connu un automne 2011 exceptionnellement chaud, extrêmement sec sur une grande partie du pays et remarquablement ensoleillé. Après une année 2010 se positionnant en France métropolitaine comme la plus fraîche de ces deux dernières décennies (à égalité avec 1996), l'année 2011 se révèlera très probablement comme l'une des plus chaudes depuis 1900. L'Organisation météorologique mondiale (OMM) a également publié la version provisoire de la Déclaration annuelle de l’Organisation  sur l’état du climat mondial dans le cadre de la conférence climatique internationale qui se tient à Durban, en Afrique du Sud, du 28 novembre au 9 décembre 2011. Elle donne une évaluation de la température moyenne à la surface du globe ainsi qu’un aperçu des principaux événements météorologiques et climatiques qui se sont produits dans le monde en 2011.



UK Met Office wins social media award
Posted on 2 December 2011

The Met Office has won the Best Use of Social Media award in the public sector at the Computer Weekly's Social Media Awards 2011, sponsored by IBM. Using TwitterFacebook,  YouTube and our news blog we help people keep up to date about the latest weather so that they know what to expect and how best to deal with all that the British weather can throw at us as a nation. Through our social media channels, we're reaching more than 75,000 people every month. Our @metoffice Twitter channel has over 40,000 followers, and we are available to respond to weather queries 24 hours a day, 7 days a week so that our followers are only one tweet away from the latest weather information.



Active 2011 hurricane season breaks 'Hurricane Amnesia'
Posted on 2 December 2011

The 2011 Hurricane Season in 4.5 minutes. The 2011 Atlantic hurricane season officially ends Wednesday, having produced a total of 19 tropical storms of which seven became hurricanes, including three major hurricanes. This level of activity matched NOAA’s predictions and continues the trend of active hurricane seasons that began in 1995.

The 19 tropical storms represent the third-highest total (tied with 1887, 1995, and 2010) since records began in 1851 and is well above the average of 11. However, the number of hurricanes and major hurricanes is only slightly above the average of six and two, respectively. This year’s totals include a post-storm upgrade of Tropical Storm Nate to hurricane status, and the addition of a short-lived, unnamed tropical storm that formed in early September between Bermuda and Nova Scotia. This unnamed storm, along with several other weak, short-lived named storms, could have gone undetected without modern satellite technology


CMA and China Three Gorges Corporation take strategic cooperation
Posted on 2 December 2011

On November 28, China Meteorological Administration (CMA) and China Three Gorges Corporation held a strategic cooperation meeting. In the following 3 years, the 2 sides would strengthen the capacity building of Meteorological Center of the Yangtze River, offer meteorological service for water resources regulation in the Three Gorges and take specific researchs on the demands of the Three Gorges project. Zheng Guoguang, Administrator of CMA and Chen Fei, General Manager of China Three Gorges Corporation attended the meeting. Zheng Guoguang stressed that CMA always paid high attention to the bilateral cooperation. In recently years, CMA has provided all dimensional meteorological services according to the safe operation of the Three Gorges. In the backdrop of global warming, extreme weather events have increased. So the meteorological department has faced severe challenges on developing water resources of the Yangtze River and guaranteeing the operation of the Three Gorges. CMA would deepen the cooperation with China Three Gorges Corporation, strengthen the modernization construction of Meteorological Center of the Yangtze River, promote the application of the meteorological products and support the safe and stable operation of the Three Gorges project. Chen Fei said that this strategic cooperation meeting was to implement the bilateral strategic cooperation framework. The 2 sides would take relevant scientific researchs.


Posted on 2 December 2011


The Government would pay more attention to environmental projects in an effort to strategically cope with climate change, said Pham Hoang Mai, head of the Department of Science, Education, Natural Resources and Environment at a workshop on climate finance options held in Ha Noi yesterday, Nov 16.The workshop reviewed the effects of climate change on Viet Nam's financial situation and discussed how best to mobilise sufficient funds to address the phenomenon. According to Mai, the money spent annually by the Government on environmental projects is aimed at either alleviating the impact of climate change here and now, or raising the country's capacity to adapt and deal with problems in the future.



Japan Meteorological Agency: Climate Change Monitoring Report
Posted 24 October 2011

The Japan Meteorological Agency (JMA) promotes monitoring climate change. JMA has issued "Climate Change Monitoring Report" every year informing the latest status of climate change in Japan and the world, greenhouse gases and the ozone layer. These reports are expected to help readers such as policy makers and researchers to obtain better understanding of the latest status of the climate and further to take measures against the global warming and for protection of the global environment.


La vigilance étendue aux phénomènes de vagues-submersion
Posted 24 October 2011

null A l’approche des grandes marées, Météo-France met en place une nouvelle vigilance « vagues-submersions » afin de mieux anticiper ces montées extrêmes du niveau de la mer et de renforcer la protection des populations. Ce dispositif s’accompagne de consignes de comportements adaptées qui facilitent, pour les services de l’Etat et les collectivités concernés, l’organisation de l’alerte à partir de la vigilance.

Derrière ce nouveau pictogramme c’est toute la chaîne de gestion et de prévention des risques qui se mobilise autour de ces phénomènes et de leurs dangers (embarcations projetées sur le rivage, inondations, noyades…).

L’information relative aux vagues-submersion est produite par Météo-France en collaboration avec le SHOM, Service hydrographique et océanographique de la marine.

La vigilance couvre désormais 9 phénomènes météorologiques et hydrologiques : vent violent, pluie-inondation, orages, neige-verglas, inondation, vagues-submersion, canicule, grand froid et avalanches.


Météo-France: 2001-2011 La vigilance Météorologique a 10 ans
Posted 24 October 2011

Depuis le 1er octobre 2001, la carte de vigilance vous informe des dangers d’origine météorologique en France métropolitaine. Ce dispositif est le fruit d’une réflexion menée après les tempêtes de 1999 qui a mis en évidence qu’une meilleure information de la population aurait pu limiter les conséquences dramatiques de ces évènements.



NOAA: U.S. dealt another La Niña winter but ‘wild card’ could trump it
Posted 24 October 2011

Winter Outlook Temperature The Southern Plains should prepare for continued drier and warmer than average weather, while the Pacific Northwest is likely to be colder and wetter than average from December through February, according to the annual Winter Outlook released today by NOAA.

For the second winter in a row, La Niña will influence weather patterns across the country, but as usual, it’s not the only climate factor at play. The ‘wild card’ is the lesser-known and less predictable Arctic Oscillation that could produce dramatic short-term swings in temperatures this winter.


IDEAM informa que un nuevo fenómeno “La Niña” está en formación
Posted 24 October 2011

De acuerdo con información de la NOAA (Agencia Nacional del Océano y la Atmosfera de los Estados Unidos), del Instituto norteamericano IRI, de los modelos internacionales de predicción climática y los análisis del IDEAM, un nuevo fenómeno “La Niña” se encuentra en su fase inicial de formación, y de consolidarse su desarrollo, sus efectos se reflejarían durante este fin de año (diciembre) y principio del año 2012 (enero, febrero y marzo), en donde se registrarían lluvias por encima de los valores promedios en las regiones Caribe, Pacífica y Andina, principalmente.

Por su parte el Director General del IDEAM advirtió que se deberá seguir prestando especial atención y redoblar los esfuerzos en aquellas zonas más sensibles a las amenazas por inundaciones y crecientes rápidas; “Debemos estar atentos a las zonas altamente vulnerables, las cuales se encuentran, especialmente, en el río Magdalena (Cuenca alta, media y baja), río Cauca (Cuenca alta, media y baja), río Atrato, río Sinú, San Jorge y San Pedro, río Suárez, río Chicamocha, río Sogamoso, río Lebrija, río Zulia, río Pamplonita, río Otún, río Negro, río Meta, áreas aledañas a la Laguna de Fúquene, río Bogotá: especialmente, la Sabana de Bogota, corrientes de la Sierra Nevada de Santa Marta, especialmente las que vierten sus aguas a la Ciénaga Grande de Santa Marta”, sostuvo el director General del IDEAM, Ricardo Lozano P.



UK Met Office Hadley Centre appoints new head
Posted 24 October 2011

17 October 2011 - The Met Office is delighted to announce the appointment of Professor Stephen Belcher as Head of the Met Office Hadley Centre.

One of the world's foremost climate change research centres, the Met Office Hadley Centre is co-funded by the Department of Energy and Climate Change (DECC) and the Department for Environment, Food and Rural Affairs (Defra). It provides guidance to Government and businesses on the science of climate change.

Chief Scientist at the Met Office, Professor Julia Slingo OBE, said: "The Met Office Hadley Centre has a world-wide reputation in climate science and I am delighted that Professor Stephen Belcher will be adding his expertise and leadership in support of our vital work. Stephen is among the very best of the UK's atmospheric scientists and I am looking forward to working with him."



AEMET organiza seminarios sobre el tiempo y el agua en África OccidentalSeminario para agricultores
Posted 20 October 2011

Un proyecto, financiado por AEMET y coordinado con la OMM, permite la formación de 5.700 agricultores de 15 países africanos para que puedan acceder a la información meteorológica y climática.

Seminario para agricultores




Météo-Suisse: La valeur des prévisions météorologiques
Posted 14 October 2011

Les avantages économiques générés par la météorologie dans les domaines du trafic et de l'électricité sont estimés entre 93 et 113 millions de francs par année, et il ne s'agit là que d'une estimation minimale ; c'est ce que montre une étude de l'entreprise de conseil et de recherche econcept. En comparaison, les coûts du service météorologique national MétéoSuisse ne s'élèvent qu'à 80 millions de francs par an. La société de sécurité aérienne Skyguide estime en outre que sans les prévisions météorologiques aéronautiques de MétéoSuisse, seuls 70% des décollages et atterrissages pourraient avoir lieu.


Les scénarios du changement climatique en Suisse CH2011
Posted 29 September 2011

En Suisse, il fera plus chaud et plus sec pendant l'été. Ces changements auront aussi une influence sur les événements extrêmes; on peut ainsi s'attendre à des vagues de chaleur plus longues et plus fréquentes et des périodes de sécheresse estivales plus longues. C'est ce que confirment les dernières connaissances scientifiques des climatologues suisses sous la direction de l'EPFZ et de MétéoSuisse; ces derniers présentent aujourd'hui de nouveaux scénarios climatiques pour la Suisse lors d'une grande manifestation à l'auditoire Maximum de l'EPFZ.

Les scénarios s'appuient sur des simulations climatiques affinées et de nouvelles approches statistiques. Autre nouveauté: pour la première fois, les données détaillées des scénarios sont disponibles sous forme numérique. Ces nouveaux scénarios permettront de faire avancer la recherche sur les conséquences du changement climatique et offriront aux décideurs politiques et économiques la possibilité d'accéder à des informations complètes sur l'évolution du climat en Suisse au cours du XXIe siècle.

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UK Met Office: New research programme on the Amazon
Posted 28 September 2011

An ambitious research programme to explore what may happen to the Amazon over the coming decades as a result of climate change and deforestation has just begun.

Scientists from 14 European and South-American research institutes, including the Met Office and the Universities of Edinburgh and Leeds will work together in  'AMAZALERT' 

'AMAZALERT' aims to test how vulnerable the forests of the Amazon may be to some form of die-back due to climate change and deforestation and if so, to forecast where in the region, when and how this may happen. It will also evaluate the impact and effectiveness of public policies and measures to prevent Amazon degradation.

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Météo-France au Forum International de la Météo
Posted 28 September 2011

Forum International de la MétéoLe 8ème Forum International de la Météo, organisé par la Société Météorologique de France (SMF), se tiendra à Paris au Palais de la découverte du 1er au 5 octobre 2011.  Cette manifestation propose au public et aux écoles de venir découvrir des expositions et des animations sur les thèmes de la météo, du climat, des énergies, de l’eau, de l’espace et de l’environnement.

Les météorologues seront présents pour répondre à toutes vos questions autour d'une exposition sur les changements climatiques en France et dans le monde.

Les 4 et 5 octobre, les scolaires apprendront en s'amusant grâce à un jeu de l'oie géant, autour duquel des équipes batailleront sur le terrain des connaissances météo.

Pour les plus curieux, deux bornes interactives les emmèneront dans les tourments d'une dépression, au centre d’un anticyclone, soupeser un nuage et surveiller le temps depuis un satellite!

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CMA upgrades emergency response to cope with typhoon Nesat
Posted 28 September 2011

At 11:00 p.m. on September 28, to cope with typhoon Nesat, which is likely to be the strongest landing typhoon so far in this year, China Meteorological Administration (CMA) decided to raise the emergency response from Level Three to Level Two.

The Central Meteorological Office has issued the Orange alert for typhoon at 10:00 a.m. The typhoon is forecasted to move west by north at speed of 20 to 25 km per hour with gaining intensity approaching western Guangdong to eastern Hainan. It is likely to land in the areas from Yangjiang, Guangdong to Lingshui, Hainan from tomorrow afternoon to night.

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BoM Australia: Odds firm for a La Niña in 2011
Posted 28 September 2011

The continuing cooling trend in the central Pacific Ocean since early winter is consistent with a developing La Niña event. For example, temperatures below the surface of the tropical Pacific Ocean during September are 4 °C cooler than average in some areas. The majority of leading climate models predict current patterns and trends will continue, with further cooling beyond La Niña thresholds during the last quarter of 2011.

Atmospheric indicators are also trending towards typical La Niña values. Trade winds have been persistently stronger than normal in the central and western Pacific Ocean, and the Southern Oscillation Index (SOI) this week reached the threshold value of +8. Sustained values at this level are an indication of La Niña.

If a La Niña does form, current indicators are that it will be weaker than the strong 2010-11 event. La Niña events raise the odds of above average rainfall across the north and east of the country, but don't guarantee it. The Bureau's National Climate Centre will monitor the situation closely.

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IDEAM: Ya comenzó la segunda temporada de lluvias en gran parte del país
Posted 28 September 2011

Ya comenzó la segunda temporada de lluvias en gran parte del país Como es habitual, desde mediados de septiembre comenzó la segunda temporada de lluvias en las regiones Andina, Caribe y Pacífica y terminará a mediados de diciembre, por lo que el IDEAM advierte susceptibilidad de deslizamientos, inundaciones y crecientes súbitas en estas zonas del país, a las cuales se le suma la región Caribe, que comenzó su temporada de lluvias habitual a mediados de este año.  

Según la Organización Meteorológica Mundial- OMM y la Administración Nacional del Océano y la Atmósfera de los Estados Unidos –NOAA, las aguas del Océano Pacífico Tropical, muestran una tendencia de enfriamiento, que traería como consecuencia para nuestro país, lluvias por encima de lo normal para esta temporada, sin embargo, no serán tan fuertes o intensas como las que tuvimos en la segunda temporada del año pasado, debido a que el fenómeno “La Niña” 2010- 2011, en ese momento estaba en su etapa máxima de maduración. En general, la vulnerabilidad y el riesgo, serán posiblemente mayores en algunas zonas debido al impacto que nos dejó este fenómeno hasta junio de este año, especialmente, con relación al exceso de lluvias y saturación de suelos (evento excepcional e histórico: lluvias 6 y 7 veces por encima de lo normal en casi todas las zonas de las regiones Caribe, Andina y Pacifica).

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UK Met Office: Past weather sheds new light on climate
Posted 13 September 2011

A huge catalogue of old weather data, from the ships' logs of historic voyages to World War I Royal Navy records, is being used for an international project to recreate the world's past climate.Ships log

ACRE (Atmospheric Circulation Reconstructions over Earth) aims to recover sparse historical weather observations which are then processed to create reconstructions or 'reanalyses' of the world's climate over the last 200 years.

The reanalysis will show the state of the atmosphere at six hourly intervals to give unprecedented detail about past weather. The end product will have a huge number of potential uses - including understanding future climate

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AEMET: Agosto vuelve a ser muy cálido
Posted 13 September 2011

Ell mes de agosto ha sido en general muy cálido, con una temperatura de 24,8 ºC que supera en 1,4 ºC el valor medio del mes, siendo el sexto agosto más cálido desde 1961 y el cuarto más cálido en lo que llevamos de siglo después de los de los años 2003, 2009 y 2010. En cuanto precipitaciones, ha sido seco en general, con una media de 17 mm, casi un 30% por debajo del valor normal.

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MétéoSuisse: Bulletin climatologique été 2011
Posted 13 September 2011

Au niveau national, l’été 2011 (de juin à août) fut environ 1 degré plus chaud que la norme 1961-1990. Au Sud, sur le sud du Valais et dans les Grisons, les précipitations furent excédentaires. Au Nord des Alpes, les sommes restèrent souvent légèrement déficitaires. L’ensoleillement fut déficitaire dans les Alpes. En revanche, le Plateau alémanique connut un ensoleillement plus généreux que d’habitude. Un temps hivernal en montagne pour le début de l’été Le 1er juin, qui marque le début de l’été climatologique, fut caractérisé par un retour très ponctuel de l’hiver en région alpine. En liaison avec d’abondantes précipitations sur les Alpes occidentales, ainsi qu’en Suisse centrale, la limite des chutes de neige s’abaissa localement en dessous de 1000 mètres. Au matin du 1er juin, on relevait 11 cm de neige fraîche à Adelboden (1320 mètres) et même 18 cm à Mürren (1650 mètres). A des altitudes
supérieures, on releva localement plus de 30 cm de neige fraîche. Ensuite, le temps se montra très changeant jusqu’au 6 juillet avec des changements rapides entre des journées estivales et des journées nettement plus fraîches. Il n’y a pas encore eu une longue phase de beau temps estival.



Kenya Meteorological Department: October-December 2011 Seasonal Forecast
Posted 13 September 2011

The Climate Outlook for the “Short Rains” (October-November-December (OND)) 2011 season indicates that much of the country is likely to experience near-normal rainfall. This will tend to above-normal (enhanced) rainfall in much of the southern parts of the country except the western areas. The expected enhanced seasonal rains will be driven by the
warming Indian Ocean in areas adjacent to the East African coastline. The distribution of the rainfall in time and space is expected to be generally good over most places.

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Thai Meteoroligal Department: Three Monthly Forecast September – November 2011
Posted 13 September 2011

The low pressure trough will lie across central, lower portion of northeastern and eastern regions of Thailand in September. Abundant rainfall and floods are expected in some areas. During October to November period, slight rain will remain in upper Thailand as low pressure trough move southward to lie across southern Thailand and high pressure areas from China will occasionally extend its ridge to cover upper Thailand. Cool weather will be in north and
northeast regions with cold in the mountainous areas especially in November.
Northeast monsoon will prevail, bringing further heavy rain to southern Thailand. However, rainfall amounts are likely below average in several areas. Generally speaking, in upper Thailand the amount of rainfall will be slightly above normal and the average temperature will be slightly below normal. For southern Thailand, the amount of rainfall and the average temperature will be near normal.

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CMA has strengthened the service for drought relief in southwest China
Posted 13 September 2011

Since May of this year, continuous high temperature and dry weather has resulted in severe drought in Guizhou, Yunnan, Guangxi, Chongqing and Sichuan. To deal with the drought condition, China Meteorological Administration (CMA) and the meteorological sectors in these areas paid high attention to the drought relief service, strengthened the forecasting and warning information publication and took various measures to respond to the drought condition.

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NOAA: U.S. experiences second warmest summer on record
Posted 13 September 2011

Summer temps, 2011. The blistering heat experienced by the nation during August, as well as the June through August months, marks the second warmest summer on record according to scientists at NOAA’s National Climatic Data Center (NCDC) in Asheville, N.C. The persistent heat, combined with below-average precipitation across the southern U.S. during August and the three summer months, continued a record-breaking drought across the region.

The average U.S. temperature in August was 75.7 degrees F, which is 3.0 degrees above the long-term (1901-2000) average, while the summertime temperature was 74.5 degrees F, which is 2.4 degrees above average. The warmest August on record for the contiguous United States was 75.8 degrees F in 1983, while its warmest summer on record at 74.6 degrees F occurred in 1936. Precipitation across the nation during August averaged 2.31 inches, 0.29 inches below the long-term average. The nationwide summer precipitation was 1.0 inch below average.


Météo France: Bilan de L'été
Posted 6 September 2011

nullAprès un printemps exceptionnellement chaud, sec, et remarquablement ensoleillé, les conditions climatiques ont été moins clémentes en France au cours de cet été 2011 particulièrement pluvieux. Le temps a été chaud mais souvent orageux en juin, frais et pluvieux en juillet, légèrement plus chaud que la normale avec des précipitations contrastées selon les régions en août.

Avec une température moyenne sur la France conforme aux normales* saisonnières, l’été 2011 s’apparente à ceux de 2007 (-0,1 °C) et 2008 (+0,3 °C), mais reste nettement plus frais que les étés 2009 (+1,3 °C) et 2010 (+0 ,9 °C). Quelques nuances régionales apparaissent toutefois, notamment en Bretagne où la température moyenne a été sensiblement inférieure aux normales saisonnières.

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MétéoSuisse: Bulletin climatologique été 2011
Posted 2 September 2011

Au niveau national, l'été 2011 (de juin à août) fut environ 1 degré plus chaud que la norme 1961-1990. Au Sud, sur le sud du Valais et dans les Grisons, les précipitations furent excédentaires. Au Nord des Alpes, les sommes restèrent souvent légèrement déficitaires. L'ensoleillement fut déficitaire dans les Alpes. En revanche, le Plateau alémanique connut un ensoleillement plus généreux que d'habitude.

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Thai Meteorological Department: Three Monthly Forecast September – November
Posted 2 September 2011

The low pressure trough will lie across central, lower portion of northeastern and eastern regions of Thailand in September. Abundant rainfall and floods are expected in some areas. During October to November period, slight rain will remain in upper Thailand as low pressure trough move southward to lie across southern Thailand and high pressure areas from China will occasionally extend its ridge to cover upper Thailand.

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Pakistan Meteorological Department: Heavy rains would generate flooding in Sindh/Balochistan
Posted 2 September 2011

Met Office warned about more widespread heavy at times very heavy rains in Sindh including Karachi, southern Punjab and eastern parts of Balochistan during next 3 days (Sat to Monday). Heavy to very heavy rains would generate more flooding in Sindh and flash flooding in D.G.Khan division and at a number of places in Balochistan during next 3 days. 

Met Office further informed that the current spell of monsoon rains would continue for another 4 days, and scattered rain/thundershowers are also expected in rest of the country (upper Punjab, Khyber Pakhtoonkhwa and Kashmir) during the period.

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Irish Meteorological Service: The Weather of Summer 2011
Posted 2 September 2011

The weather of Summer 2011: Cooler than average everywhere with below average rainfall in parts

The Poulter index is a method of rating the summer weather (June to August), using a formula based on mean temperature, rainfall and sunshine for selected stations, i.e. the higher the index, the 'better' the summer weather. This summer, the index was below average but according to the index it is considered to be a better summer than the summer of 2009


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India Meteorological Dept: Long Range Forecast Outlook for 2011 September Rainfall
Posted 2 September 2011

Summary of the Forecast outlook for the 2011 September Rainfall
Rainfall over the country as a whole for the 2011 September is likely to be below
normal (77 to 92% of long period average (LPA)). Quantitatively, 2011 September
rainfall for the country as a whole is likely to be 90% of LPA with a model error of ±15%.
However, if weak La Nina conditions re-emerge in September, the rainfall received can
be more than expected.

The outlook for the 2011 Southwest Monsoon Season Rainfall is that the
monsoon season (June to September) rainfall for the country as a whole is likely to be
as was forecasted by IMD in June i.e. 95% ±4 % of LPA. However, in view of latest
meteorological conditions, it is likely to be on the positive side of the model error
(i.e.95%+ 4%). The season (June to September) rainfall over all the 4 geographical
regions (Northwest India, Northeast India, Central India and South Peninsula) also likely
to be within the limits of forecasts (i.e.97% of LPA, 95% of LPA, 95% of LPA, and 94%
of LPA respectively, all with model errors of ±8% of LPA) issued by IMD in June.

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Australia BoM: Tropical Pacific currently neutral, but La Niña remains possible in 2011
Posted 2 September 2011


Neutral conditions persist in the equatorial Pacific Ocean, though a return to La Niña towards the end of 2011 cannot be ruled out. Trends over the past fortnight include further cooling of the central Pacific Ocean, persistent positive Southern Oscillation Index (SOI) values and stronger than normal trade winds. However, cloud patterns are currently close to normal, and all indicators remain well short of the strong La Niña conditions evident at the same time last year.

The majority of international climate model forecasts of ENSO predict that neutral conditions are likely to continue into the southern spring. While no models suggest El Niño conditions are likely, half of the models predict further cooling over the coming season and into the southern summer.

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Pakistan Meteorological Department: Widespread Heavy Monsoon Rains predicted in the country during coming week
Posted 29 August 2011

Monsoon has been active in Pakistan, and monsoon currents are continuously penetrating in upper parts of the country causing scattered rains over there.Meteorological conditions indicate that a strong weather system (low pressure area) is developing over central parts of India that would cause widespread heavy rains in Pakistan during the coming week. Heavy to very heavy rainfall may generate severe flooding in lower Sindh, and flash flooding in the local rivers/nullahs of Punjab, Khyber Pakhtoonkhwa and Eastern parts of Balochistan.



CMA issued level 4 emergency response for responding to Nanmadol
Posted 29 August 2011

To effectively respond to this year’s No. 11 typhoon “Nanmadol” , at 9:00 am of August 29, CMA issued level 4 emergency response for responding to Nanmadol.

Its center has landed at the coastal area of Tandong County, Taiwan Province with the maximum wind force 12 (33m/s). The minimum pressure of its center has been 975 hPa.

At 6:00 am of August 29, Central Meteorological Office issued blue typhoon alert. This year’s No.11 typhoon Nanmadol landed in Dong County, Taiwan province at about 4:25 a.m. today with maximum wind force up to scale 12 (33m/s). At 5:00 a.m. it was centered in Dong County (22.4N, 120.9E) with maximum wind force up to scale 12 (33m/s). 

It is forecasted to move north by west at speed of 10 km per hour with weakening intensity gradually and likely to get across southern Taiwan entering Taiwan Strait and approaching central and southern coast of Fujian. It is likely to land in the coastal areas from Fuqing to Zhaoan in Fujian tomorrow



NOAA: Remnants of Irene Moving Into Quebec and Newfoundland...Widespread Major Flooding Continues Over Sections of Northeast U.S
Posted 29 August 2011

At 5:00 a.m. EDT, the center of Irene was located near latitude 47.4 north, longitude 68.8 west, or about 100 miles northwest of Houlton, Maine. The remnants of Irene will continue to move away from the United States with rainfall gradually ending this morning. Flood warnings and high wind warnings are in effect for parts of the northern Mid-Atlantic into New England.

AGRHYMET: Update of the Seasonal Rainfall and Discharge Outlook for the 2011 Rainy Season in West Africa
Posted 29 August 2011

In West Africa, the 2011 rainy season is characterized by a high spatio-temporal variability of precipitation outlooks. The sea surface temperatures and the forecasts of the global climate prediction centers which have been used for the seasonal rainfall and discharge forecast in the region have significantly evolved between their initial situation in April and May compared to the situation in July and August.

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NOAA: Hurricane Irene
Posted 26 August 2011

Hurricane Irene Warning At 8:00 a.m. EDT the center of Hurricane Irene was located near latitude 30.0 north, longitude 77.3 west. Irene is moving toward the north near 14 mph and this motion is expected to continue during the next 24 hours, followed by a gradual turn toward the north-northeast. The core of the hurricane is forecast to pass well off the coast of northeastern Florida today, approach the coast of North Carolina tonight and pass near or over the North Carolina coast Saturday. The hurricane is forecast to move near or over the Mid-Atlantic coast Saturday night. Maximum sustained winds are near 110 mph, with higher gusts. Irene is a Category Two hurricane. Some re-intensification is possible today and Irene is expected to be near the threshold between category two and three as it reaches the North Carolina coast.

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JMA: Tokyo Climate Centre News
Posted 26 August 2011

Summer 2011 issue includes: The Urgan heat island effect in Japan's major cities; Aeolian dust events cover Japan in 2011; sea ice in the Sea of Okhotsk for the 2010/2011 winter; JMA's new climatic normals for atmospheric circulation fields; the GFCS at the Sixteenth World Meteorological Congress; new head of Tokyo Climate Center

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Australia's Climate is Changing
Posted 26 August 2011

Iceberg, Prydz Bay, near Magnetic Island, Antarctica, photographer  Peter Nink Australia and the globe are experiencing rapid climate change. Since the middle of the 20th century, Australian temperatures have, on average, risen by about 1°C with an increase in the frequency of heatwaves and a decrease in the numbers of frosts and cold days. Rainfall patterns have also changed - the northwest has seen an increase in rainfall over the last 50 years while much of eastern Australia and the far southwest have experienced a decline Australia and the globe are experiencing rapid climate change. Since the middle of the 20th century, Australian temperatures have, on average, risen by about 1°C with an increase in the frequency of heatwaves and a decrease in the numbers of frosts and cold days. Rainfall patterns have also changed - the northwest has seen an increase in rainfall over the last 50 years while much of eastern Australia and the far southwest have experienced a decline

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NOAA: Dangerous Hurricane Irene Turns North-Northwestward...
Posted 25 August 2011

Tropical Weather Outlook At 11:00 a.m. EDT, the center of Hurricane Irene was located near latitude 25.9 north, longitude 76.8 west. Irene is moving toward the NNW near 13 mph and this motion is expected to continue through tonight, with a turn toward the north by early Friday. Irene is forecast to continue moving over the northwestern Bahamas today and pass well offshore of the east coast of central and north Florida tonight and early Friday. The hurricane is forecast to approach the coast of North Carolina on Saturday. Maximum sustained winds are near 115 mph, with higher gusts. Irene is a Category Three hurricane. Some strengthening is possible today and tonight

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Haiti: Alerte Orange par rapport aux fortes pluies du Plan National de Gestion des Risques et des Désastres(PNGRD)
Posted 25 August 2011

L'ouragan Irène continue de s'éloigner des côtes nord d'Haïti tout en s'intensifiant. Il est toujours de catégorie 3 sur l'échelle Saffir-Simpson mais ne représente plus vraiment une menace directe pour le pays par rapport aux vents de force d'ouragan et de tempêtes. En effet, à 6h00 pm ce mercredi 24 août 2011, l'oeil de l'ouragan Irène a été localisé à 23.1 degrés de latitude nord et 74.7 degrés de longitude ouest, soit à 345 km au sud-est de Nassau (Bahamas). Il se déplace à 19km/h en direction nord-ouest. Les vents max soufflent à 195 km/h avec des rafales bien plus supérieures. Même si Haïti n'est plus sur la menace directe des effets de l'ouragan Irène, l'air humide et instable qui s'installe encore sur la zone pourrait occasionner des averses à caractères orageuses sur nos départements ce soir et cette nuit. Il est toujours prévu une quantité moyenne de 80 à 150 millimètres de pluie sur nos régions pour ce soir et cette nuit.

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Nigerian Meteorological Agency: Drought and Flood Bulletin
Posted 25 August 2011

The month of July is relatively wetter than June, as a greater part of the country experienced mild to moderate dryness except for Sokoto and Gusau that had extreme and severe dry conditions respectively. The recovery from the dry condition of the preceding month was very significant over the southern part of the country, particularly in Lagos state which witnessed flood episodes that seriously paralyzed socio-economic activities in the stateGiven the observed widespread recovery from dryness, wetter conditions are expected to prevail in most parts of the country in August, particularly in the North. This will favour rain-fed agriculture; reservoir storage and may likely lead to prospects of flood especially over some parts in the Northwest and Southern areas.

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China CMO published 9 new kinds of marine meteorological forecasting products
Posted 25 August 2011

On August 20, Central Meteorological Office (CMO) published 9 kinds of marine meteorological forecasting products including offshore wind warning. Compared with the past, the marine forecasting scale of these products enlarges and the forecasting efficient time scale extends from 48 hours to 72 hours.

These 9 kinds of marine meteorological forecasting products include offshore wind warning, Marine weather bulletin, Coastal waters forecast guidance, Far Sea Area Forecast, Situation analysis of North Pacific sea live, Situation of the North Pacific sea level forecasts, North Pacific 500 hPa height field analysis of the llive situation, North Pacific 500 hPa height field situation forecast and forecast of Marine forecast wind speed grid.

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Pakistan Meteorological Department: Widespread Monsoon Rains predicted in coming days
Posted 24 August 2011  

MONSOON is likely to remain ACTIVE in Pakistan during next 7 days that would produce widespread rains with isolated heavy falls in different parts of the country during this period.

Widespread rain/thundershowers with isolated heavy falls expected in Punjab, Khyber Pakhtoonkhwa and Kashmir; scattered rain/thundershowers with isolated heavy falls expected in Sindh and Eastern parts of Balochistan during next 4/5 days. Heavy falls may cause urban/flash flooding in the said areas. The flooded areas of lower Sindh would receive more rains/thundershowers during the current week.

Due to frequent heavy falls in the catchment areas of eastern rivers of Pakistan, the water level may further rise in the Sutlej and Chenab rivers, generating low/medium level flooding in some of the areas, during the coming few days.

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Mekong Delta residents (Viet Nam) welcome flood season
Posted 24 August 2011

Residents in the upper reaches of the Southern Mekong Delta Provinces of An Giang and Dong Thap await eagerly for the coming flood season, excitedly preparing all essential equipment required while also hurriedly reinforcing their irrigation systems and embankments to protect thousands of hectares of rice fields and orchards.

Huynh Thanh Phong, Head of the An Giang Agricultural Office, stated that a decade ago people clamored to save themselves and their crops from harms way, but nowadays everyone concentrates on taking full advantage of the flood season.

Experts have advised farmers to grow and harvest rice early in the highly susceptible 9,000 hectare area to avoid crop loss, while the 3,571 hectare rice fields in the west, which are better shielded from flood waters, have completed 60 percent sowing.

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Centre National de Météorologie, Haiti: Bulletin Special
Posted 23 August 2011

Alerte rouge par rapport aux conditions de cyclone du Plan National de Gestion des Risques et des Désastres(PNGRD) Les effets de l'ouragan Irène se font déjà sentir sur le sud-est des Bahamas. Il a perdu un peu de son intensité mais garde toujours la catégorie 1 sur l'échelle Saffir-Simpson. Il se retrouve toujours à plus d'une centaine de kilomètres au nord de la côte nord d'Haïti. Seules les côtes nord-est, nord et nord-ouest demeurent à présent sous la menace par rapport aux conditions de tempête. En effet, à 10 h pm ce mardi 23 août 2011, l'oeil de l'ouragan Irène a été localisé à 21.3 degrés de latitude nord et 72.4 degrés de longitude ouest soit 655 km au Sud-est de Nassau (Bahamas), 123 km au nord de l'ile de la tortue, 167 km au nord de Port-de-paix, 208 km au nord-ouest du Cap-Haitien. Il se déplace à 15km/h en direction ouest nord-ouest. Les vents max soufflent à 150 km/h avec des rafales bien plus supérieures. Les vents d'ouragan soufflent maintenant dans un rayon de 65 km à partir du centre et les vents de tempêtes sur un rayon de 335 km toujours à partir du centre. La pression centrale mesurée est de 969 hectopascals.

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UK Met Office launches online weather game
Posted 22 August 2011

The Met Office, in collaboration with the Universities of Bristol and Cambridge, is launching an online weather game to investigate how we respond to different representations of probabilities, particularly for use in presenting weather forecasts.

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US National Weather Service: Hurricane Irene Forecast to Pass Just North of Hispaniola
Posted 22 August 2011

The Tropical Storm Warning for the U.S. Virgin Islands has been discontinued. A Tropical Storm Warning remains in effect for Puerto Rico, Vieques and Culebra. As of 11:00 a.m. EDT the center of Hurricane Irene was located near latitude 19.2 north, longitude 67.5 west, with the storm currently moving toward the west-northwest near 13 mph. This motion is expected to continue during the next 24 to 48 hours, with the core of Irene passing just to the north of Hispaniola later today and early Tuesday and reach the Turks and Caicos Islands and the southeastern Bahamas late Tuesday. Maximum sustained winds have increased to near 80 mph, with higher gusts. Based on the latest model guidance, the official track forecast has been shifted to the east, but still remains slightly west of the model consensus. Although it is too early to be certain, the current guidance lessens the threat to south Florida

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Centre National de Météorologie, Haiti: Bulletin Special
Posted 22 August 2011

Alerte rouge par rapport aux conditions de cyclone du Plan National de Gestion des Risques et des Désastres(PNGRD). La tempête tropicale Irène se renforce encore davantage sur Porto-Rico et est devenue ce lundi matin le premier ouragan de la saison cyclonique 2011... En effet, à 5 heures am ce lundi 22 août, le centre de l'ouragan Irène a été localisé à 18.4 degrés de latitude nord et 66.4 degrés de longitude ouest soit à environ 40 km ouest de San Juan, Porto-Rico et à 200km est de Punta Cana, République Dominicaine. Il se déplace actuellement en direction ouest nord-ouest à 19km/h. Le centre de l'ouragan Irène se déplacera dans les prochaines heures sur les côtes nord de Porto- Rico, puis sur la partie nord de la République Dominicaine et Haiti tard cette nuit. Les vents max soufflent à 120 km/h avec des rafales bien plus supérieures. Les vents d'ouragan soufflent dans un rayon de 30 km à partir du centre. Les vents de tempêtes soufflent sur un rayon de 240 km à partir du centre notamment au nord-ouest et nord-est du centre.



L’Institut royal météorologique (Belge): L'orage violent du 18 août 2011
Posted 22 August 2011

Jeudi 18 août 2011, le territoire belge a été localement touché par de violents phénomènes orageux. Dans le début de l'après-midi, c’est surtout l’ouest de notre pays qui fut touché. Dans l’après-midi et le début de soirée, c’était au tour du centre et d’une partie de l’est du pays. Les phénomènes orageux qui se sont produits en fin d’après-midi et dans la soirée furent localement très intenses et ont provoqué des inondations, des dégâts dus au vent et à la grêle.

Les orages se sont caractérisés par leur déplacement très rapide du sud-ouest vers le nord-est, affectant d'abord le Hainaut, le sud de la Flandre Orientale, puis Bruxelles et le Brabant pour se diriger ensuite vers les provinces d’Anvers et du Limbourg.


EUMETSAT: Meteosat satellite series supplies three decades of climate data
Posted 17 August 2011

On 16 August 1981, the Meteosat-2 geostationary weather satellite began operationally to supply data relevant for climate monitoring. The imager on Meteosat-2 and subsequent satellites in the series has now provided 30 years of data, which are archived in and accessible from the EUMETSAT Data Centre

"This is one of the longest time series of climate relevant data collected by satellite in the world," said Jörg Schulz, Climate Product Expert in EUMETSAT’s Meteorological Operations Division. Furthermore, Meteosat is the only European satellite system which can provide such a length of records

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NOAA's National Weather Service taking action to build a 'Weather-ready' nation; 2011 ties record for billion-dollar disasters
Posted 17 August 2011

NOAA is launching a comprehensive initiative to build a “Weather-ready” nation to make America safer by saving more lives and protecting livelihoods as communities across the country become increasingly vulnerable to severe weather events, such as tornado outbreaks, intense heat waves, flooding, active hurricane seasons, and solar storms that threaten electrical and communication systems.

NOAA is also announcing that the United States has so far this year experienced nine separate disasters, each with an economic loss of $1 billion or more — tying the record set in 2008. The latest event to surpass the $1 billion price tag is this summer’s flooding along the Missouri and Souris rivers in the upper Midwest. This year’s losses have so far amounted to $35 billion.

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Korea Meteorological Administration: Monthly (July) Climate Summary
Posted 17 August 2011

Climate features in July 2011 and their long-term trends are analyzed using 47 meteorological stations over Korea (the national average) during 1973-2011 (1908-2011 for Seoul).
The climatological features in July 2011 can be described as follows for Korea (whole nation):
- The mean temperature (25.1 ℃), the mean maximum temperature (29.0 ℃) and the mean minimum temperature (22.2 ℃) were 0.6 ℃, 0.2 ℃ and 1.0 ℃ above normal, respectively.
- The monthly amount of precipitation (474.8 mm) was 158 % of normal, making it the second highest July value in a record extending back to 1973.
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IDEAM prevé lluvias por encima de lo normal en el último trimestre del año (Colombia)
Posted 17 August 2011

El IDEAM informa al país que se espera que la segunda temporada de lluvias inicie a mediados de septiembre, la cual podría superar los valores medios de la época.

A mediano plazo, es decir para el último trimestre del año (octubre a diciembre), los análisis del IDEAM y de centros internacionales de pronóstico, indican una disminución de la temperatura superficial del mar (enfriamiento), en el Océano Pacífico Tropical, por lo cual es probable que la segunda temporada de lluvias que se inicia a mediados de septiembre, supere los valores medios de la época, particularmente en las regiones Caribe, Andina y centro y norte de la región Pacífica. 

En el corto plazo (agosto-septiembre), es altamente probable que los procesos océano-atmosféricos presentes en el Atlántico tropical y oriental, relacionados con el paso de ondas tropicales del Este, tránsito de ciclones tropicales y la humedad proveniente de la Amazonía, sigan siendo factores preponderantes para que se registren precipitaciones por encima de los promedios, especialmente en el centro y norte del país.

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Australia BoM: ENSO neutral conditions persist
Posted 17 August 2011

As detailed in the ENSO Wrap-Up, neutral conditions continue in the tropical Pacific Ocean, with most of the atmospheric and oceanic indicators at near normal values.

The majority of dynamical models surveyed by the Bureau of Meteorology suggest that the central Pacific Ocean temperatures are likely to cool in the coming months, but the consensus is for them to remain within the neutral range for at least the southern spring. Some models are now showing chances of cool (La Niña) conditions from late spring into summer.

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CMA held a seminar to conclude the forecasting technique of "Muifa"
Posted 17 August 2011

On Aug.16, the Department of Forecasting and Information System of CMA and the National Meteorological Centre held a video-television consultation and a seminar to conclude the forecasting technique of “Muifa”. Zheng Guoguang, Administrator of CMA, stressed that we should draw a lesson from forecast of “Muifa”, objectively view the contradictions between the actual capacities of forecast and social need, closely pay attention to the key task that was to increase the accuracy of forecasting, depend on the development of science and technology to increase the capacities of forecasting.

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NOAA: Heat wave leads to fourth warmest July on record for the U.S.
Posted 12 August 2011

Persistent, scorching heat in the central and eastern regions of the United States shattered long-standing daily and monthly temperature records last month, making it the fourth warmest July on record nationally, according to scientists at NOAA’s National Climatic Data Center. The heat exacerbated drought conditions, resulting in the largest “excJuly 2011 precipitation divisional rank map.eptional” drought footprint in the 12-year history of the U.S. Drought Monitor. “Exceptional” is the most severe category of drought on the drought monitor scale. Drought conditions at several locations in the South region are not as long lived, but are as dry, or drier, than the historic droughts of the 1930s and 1950s.

The average U.S. temperature in July was 77.0 degrees F, which is 2.7 degrees F above the long-term (1901-2000) average. Precipitation, averaged across the nation, was 2.46 inches. This was 0.32 inch below the long-term average, with large variability between regions. This monthly analysis, based on records dating back to 1895, is part of the suite of climate services NOAA provides.

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Phlippines Tropical Cyclone Outlook for the Month of August 2011
Posted 12 August 2011

Two (2) to three (3) TC to develop or enter the Philippines Area of Responsibility (PAR). One (1) TC with typhoon intensity expected to cross northern Luzon. Passage of TC over the PAR will enhanced the SW monsoon and may bring heavy rains. Peak of the southwest (SW) monsoon and tropical cyclone (TC) occurrences are expected. Wet conditions are likely. Rainfall distribution in the country are ranging from 200 to 400 millimeters in major parts of the country and more than 500 millimeters over the western side of Luzon and some parts of Visayas. Flashfloods and landslides over low lying areas and mountainous regions are possible.

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BoM Australia: An unseasonable warm spell affecting Victoria in early August 2011.
Posted 12 August 2011

This Special Climate Statement from the Bureau of Meteorology details the recent unusual
winter warm spell across Victoria.

A high pressure system centred over the NSW coast drifted into the Tasman Sea on the last weekend of July 2011. The high pressure system directed north westerly winds across Victoria. This northerly wind flow contributed to Victoria experiencing unprecedented warm weather for this time of year. Many early season1 heat records were set for both warmest day and warmest night following mid winter (noting that late June/early July is typically the coldest time of year in southeast Australia).

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CMA: Record of the meteorological service of National Meteorological Center for the Universiade 2011
Posted 12 August 2011

As the base of national meteorological service, the National Meteorological Center has kicked off the service for the Universiade 2011. From this moment, the meteorological staff will show us the unique wonderfulness.

On Aug 1, the National Meteorological Center held a video-phone conference for supporting the meteorological service for the Universiade 2011, Shenzhen. Every forecaster prepared seriously to ensure the operation successfully.  According to the requirement of the Universiade 2011, the refine marine forecasting production of the South China Sea, Shenzhen 15-kilometers numerical model production and the objective probability forecast for Shenzhen thunderstorm would be widely used in this Universiade to implement the requirement of Jiao Meiyan, Deputy Administration of CMA on the meteorological technology service for the Universiade 2011. The National Meteorological Center built the interactive communication channel to assign special person to ensure the meteorological service successful and respond to the emergencies effectively.



NOAA study: Slowing climate change by targeting gases other than carbon dioxide
Posted 12 August 2011

green house gas pie chart.The direct warming influence of all long-lived greenhouse gases in the atmosphere today attributable to human activities. CO2’s warming influence of 1.7 watts/m2 is equivalent to the heat from nearly 9 trillion 100-watt incandescent light bulbs placed across Earth’s surface. The combined influence of the non-CO2 greenhouse gases is equivalent to the heat from about 5 trillion bulbs. The category “other”includes a few very long-lived chemicals that can exert a climate influence for millennia.

Carbon dioxide remains the undisputed king of recent climate change, but other greenhouse gases measurably contribute to the problem. A new study, conducted by NOAA scientists and published online today in Nature, shows that cutting emissions of those other gases could slow changes in climate that are expected in the future


NOAA's Atlantic hurricane season update calls for increase in named storms
Posted 11 November 2011

NOAA issued its updated 2011 Atlantic hurricane season outlook today, raising the number of expected named storms from its pre-season outlook issued in May. Forecasters also increased their confidence that 2011 will be an active Atlantic hurTropical Storm Emily on August 3 from NOAA's geostationary satellite GOES-EAST.ricane season. NOAA’s Climate Prediction Center, a division of the National Weather Service, updates its Atlantic hurricane season outlook every August.

“The atmosphere and Atlantic Ocean are primed for high hurricane activity during August through October,” said Gerry Bell, Ph.D., lead seasonal hurricane forecaster at the Climate Prediction Center.  “Storms through October will form more frequently and become more intense than we’ve seen so far this season.


Tropical Storm Emily on August 3 from NOAA's geostationary satellite GOES-EAST.

>> More

UK Met Office: Pause in upper ocean warming explained
Posted 11 August 2011

Ocean forecasting Two research papers shed new light on why the upper layers of the world's oceans have seen a recent pause in warming despite continued increases in greenhouse gases.

The independent studies from the Royal Netherlands Meteorological Institute (KNMI) and the Met Office show how natural climate variability can temporarily mask longer-term trends in upper ocean heat content and sea surface temperature.

The upper 700 metres of the global ocean has seen a rise in temperature since reliable records began in the late 1960s. However, there has been a pause in this warming during the period from 2003 to 2010. The papers published this week offer explanations for this.

>> More


India Meteorological Department: Long Range Forecast Outlook for the Rainfall
During the Second Half of 2011 Southwest Monsoon
Posted 11 August 2011

Rainfall over the country as a whole for the second half (August to September) of
the 2011 southwest monsoon season is likely to be below normal (86 to 94% of long
period average (LPA)). Quantitatively, rainfall for the country as a whole during the
period August to September, 2011 is likely to be 90% of LPA with a model error of ±8%.
The outlook for the 2011 Southwest Monsoon Season Rainfall is that the
monsoon season (June to September) rainfall for the country as a whole is likely to be
below normal (90-96% of LPA) as forecasted by IMD in June. The season (June to
September) rainfall over the 3 geographical regions (Northwest India, Central India and
South Peninsula) is also likely to be within the limits of forecasts (i.e.97% of LPA, 95%
of LPA and 94% of LPA respectively all with model errors of ±8% of LPA) issued by IMD
in June. However, the season rainfall over Northeast India is likely to be less than lower
limit of the IMD forecast (95 ±8% of LPA) issued in June

>> More

AEMET: El julio menos cálido desde 2002
Posted 11 August 2011

Anomalías de temperatura mes de julio 2011 El mes de julio ha sido normal desde el punto de vista térmico en el conjunto de España dado que la temperatura media mensual fue de 23, 3º C por lo quedó sólo 0,1º C por debajo del valor medio del mes. No obstante ha sido el menos cálido desde el año 2002. En cuanto a precipitaciones ha resultado en conjunto ligeramente más seco de lo normal dado que la precipitación media acumulada se ha situado en torno a 18 mm. algo por debajo del valor medio normal para este mes que es de 23 mm.

>> More


DWD: The weather in Germany in July 2011
Posted 11 August 2011

July was the first month in 2011 which was too cool.

Germany experienced an overcast July 2011 which was particularly cool in the southwest of the country and particularly wet in the east. It was the first overly cool month this year. As the initial analysis by the Deutscher Wetterdienst (DWD) of data from its around 2,000 weather stations shows the weather was in stark contrast with last year's July which shone out with abundant sunshine and very high temperatures.

Only in a few areas in the north was the weather too warm.

>> More

Météo-France: Juillet 2011 : un mois globalement frais et pluvieux
Posted 11 August 2011

Le mois de juillet 2011 s’est révélé globalement maussade, avec des températures bien fraîches et des précipitations abondantes.

Les premiers jours du mois ont connu des températures supérieures aux normales* et des précipitations peu fréquentes dans une circulation générale de secteur sud-ouest. La bascule dans un courant de nord-ouest perturbé survenue peu avant la mi-juillet a très sensiblement dégradé le temps en France. A partir de cette date, les pluies ont été fréquentes et les températures sont restées systématiquement inférieures aux normales. La fraîcheur s’est ressentie tout particulièrement au niveau des températures maximales de l’après-midi, régulièrement 4°C à 5°C en dessous des normales.

Température en juillet en France depuis 1950. Ecart à la moyenne de référence 1971-2000.
>> More


Hong Kong Observatory hosts training workshop on severe weather forecasting and warning services
Posted 18 July 2011

A World Meteorological Organization (WMO) training workshop on severe weather forecasting and warning services was successfully held at the Hong Kong Observatory (HKO) from July 4 to today (July 15). The hosting of this training workshop was part of the Observatory's ongoing contributions to the international meteorological community. >> More

Météo-France : Hommage à Jean Labrousse
Posted 12 July 2011

Jean Labrousse, ancien Directeur de la Météorologie Nationale, est décédé samedi 9 juillet 2011 à l’âge de 79 ans.

A la Direction de la Météorologie Nationale (DMN), après un premier poste au Togo, il fit assez rapidement parler sa fibre pédagogique en intégrant l’ENM, où il rencontra en particulier Jean Lepas, qui allait devenir un de ses plus fidèles amis et collaborateurs. >> More


Observatory launches project to provide city weather forecasts to Asian developing countries
Posted 7 July 2011

The Hong Kong Observatory (HKO) today (July 7) announced the operational launch of a Hong Kong co-ordinated World Meteorological Organization (WMO) project to provide city weather forecasts to developing countries in Asia. >> More

US National Weather Service: Major Dust Storm Moves Through Arizona
Posted 6 July 2011

Dust storm entering Phoenix, as seen from the NWS Phoenix offic


A very large and historic dust storm moved through a large swatch of Arizona during the late afternoon and evening hours of July 5, 2011. Widespread reports of near zero visibility and winds gusting over 50 mph were received by the National Weather Service Phoenix office. >> More


La sécheresse actuelle en regard des grandes sécheresses du passé
Posted 6 July 2011

Comme l'on pouvait s'y attendre, le mois de juin a été marqué par une activité orageuse parfois importante, en particulier au sud des Alpes et dans les Alpes valaisannes orientales. D'une manière générale, les excédents se sont surtout fait sentir en Suisse alémanique, notamment dans les Grisons, en Engadine et dans les Alpes orientales. Plus surprenants en revanche sont les excédents (compris entre 105 et 120 %)  enregistrés dans la région lausannoise et la région de Delémont ; ces régions doivent beaucoup aux journées pluvieuses des 4, 16 à 18 et 22 juin -> voir ci-contre "précipitations de juin".>> More


AEMET: Junio, muy cálido y seco
Posted 6 July 2011

Precipitación junio 2011

El mes de junio ha sido cálido, con una temperatura media de 21,5 ºC que se sitúa 1,5 ºC por encima del valor medio del mes. En precipitaciones ha resultado seco en general, al situarse la media acumulada en torno a 22 mm, muy por debajo de su valor normal para este mes, que es de 36 mm.>> More



India Meteorological Department: Monsoon Features during June 2011
Posted 6 July 2011

Normally monsoon advances over most regions of country in the month of June except some parts of northwest India. There is large variability in the dates of advance of monsoon over different regions and also the quantum and distribution of rainfall which has a direct bearing on the sowing operations of kharif crops over many regions of India.

The Indian Summer Monsoon is characterized by large spatio-temporal variability on various scales. The pattern of variability in every year is unique. The South West Monsoon season extends through June to September. The normal date of onset of SW monsoon over Kerala is 1st June. The rainfall during June accounts for 19% of the seasonal rainfall. In this report some of the characteristic features displayed by the southwest monsoon 2011 in the month of June are analysed and presented in the following sections. This includes the observational aspects, anomalies in the circulation field and synoptic systems.>> More


Météo-France: Résultats du projet Climsec
Posted 6 July 2011

Copyright Météo-France / Patrick PichardLancé en mars 2008, le projet de recherche Climsec avait pour objectif de caractériser l’impact du changement climatique sur la ressource en eau, notamment sur l’humidité des sols, et de produire de nouveaux outils pour les services en charge du suivi climatique. Coordonné par Météo-France et soutenu par la Fondation MAIF*, le projet a associé des chercheurs du CNRS, du CERFACS, du Cemagref et de l’Ecole des Mines de Paris.

L'effet de serre et les émissions anthropiques modifient le climat. Si la température moyenne à l’échelle du  globe est la première concernée, d’autres composantes climatiques subissent ou subiront ce changement : parmi elles, la ressource en eau.>> More

BoM Australia: Neutral ENSO conditions likely to persist
Posted 6 July 2011

Neutral ENSO conditions are firmly established across the tropical Pacific Ocean, with most atmospheric and oceanic indicators at near normal levels. The majority of international climate model forecasts of ENSO show that neutral conditions are likely to continue through the southern spring, with forecast temperatures being lower than were being forecast a few months ago.

The influence of the Indian Ocean Dipole (IOD) on Australian rainfall is currently neutral. Our climate model, POAMA, has forecast a positive IOD event to develop during winter, although there’s no evidence of an event at this stage. In the past, positive IOD events have been associated with drier conditions over parts of Australia, particularly in the southeast, during winter and spring.>> More

UK Met Office: Forecasting extremes for insurance
Posted 1 July 2011

The increasing importance of long-term forecasting for insurance and reinsurance firms is outlined in a joint Lloyd's and Met Office report published online this week. Written by Matt Huddleston, Principal Consultant at the Met Office, the report examines the issues that the changing climate poses for managing exposure to weather-related risk.

In 2010, about $27 billion of insured loss was recorded by firms around the world due to floods, storms, drought, and other extreme weather.*

Traditionally insurance and reinsurance companies have managed their exposure to this type of risk by basing decisions on records of past events. However, there is growing evidence that suggests changes in our climate are increasing the frequency of extreme weather events - and this may mean that past data is less reliable as the only guide to the future.>> More


HKO: Community Weather Information Network Wins Royal Meteorological Society Award
Posted 1 July 2011

The Hong Kong Observatory (HKO) has been given the prestigious 2010 Vaisala Award for Weather Observing and Instrumentation by the Royal Meteorological Society (RMetS) for the Community Weather Information Network (Co-WIN), jointly set up by the HKO and the Hong Kong Polytechnic University (HK Poly U). The award was presented to the Director of the HKO, Mr Shun Chi-ming, and the Head of the Department of Applied Physics of HK Poly U, Professor Helen Chan, at the RMetS Conference on June 29 (UK time) in Exeter, UK.

The RMetS's Vaisala Award, presented every two years, was given to the HKO and HK Poly U in recognition of their joint effort in raising community awareness toward weather and climate through the establishment of Co-WIN in Hong Kong. In its citation for the award, the RMetS highlighted Co-WIN's success in enabling people of all ages, in particular schoolchildren, to appreciate the elements through hands-on activities in running weather stations. Apart from weather-data sharing, Co-WIN also provides a platform for the exchange of observational experiences and for the organisation of related educational activities. The RMetS also recognised Co-WIN's achievement in demonstrating how groups can work together to deliver high-quality community education on weather and climate for the benefit of all.>> More


AEMET lidera el desarrollo de nuevos productos de satélites meteorológicos
Posted 1 July 2011

El último Consejo de EUMETSAT ha confiado AEMET, que lidera el grupo SAF de Nowcasting, el desarrollo de de nuevos productos de satélites meteorológicos. Esta decisión se tomó en la reunión de Copenhague, el pasado 29 de Junio, durante la celebración del Consejo de EUMETSAT, en la que el Presidente de AEMET firmó el acuerdo para la Segunda Fase de Desarrollo Continuo y Operaciones (CDOP-2) del SAF de Nowcasting.

En dicho acuerdo se fija como entidad responsable a la Agencia Estatal de Meteorología, y como tal se recogen las actividades que ésta debe de realizar. La actividad principal para la CDOP-2 es desarrollar y mejorar los productos y el Software del SAF de Nowcasting implementando nuevos avances científicos y adaptándolos tanto a satélites geoestacionarios no europeos (GOES, MTSAT) como a futuros satélites geoestacionarios y de órbita polar (MTG, NPP/JPSS). Asimismo dicho Software, que contiene los 18 productos para ser obtenidos localmente, será distribuido a los usuarios que previamente hayan firmado una licencia de uso.>> More

160,000 people affected as gales, downpours hit China
Posted 1 July 2011

Gales and downpours generated by the tropical storm Meari have caused floods in 17 counties of three provinces on the east coast since Saturday and left 164,000 people affected, the Ministry of Civil Affairs said Monday.

As of 3 p.m. Monday, the floods that the northeastward-moving Meari caused in the provinces of Liaoning, Zhejiang and Shandong starting from Saturday have forced the evacuation of 7,500 people, affected 33,000 hectares of farmland and destroyed 400 houses, the ministry said in a statement.

The disaster has resulted in direct economic losses of nearly 200 million yuan (around 30.89 million U.S. dollars) for the three provinces, it added. (June 28).>> More

Deutscher Wetterdienst: June 2011 was the sixth excessively warm month in a row
Posted 1 July 2011

June 2011 was too warm and, above all, very changeable - as well as being the sixth month in succession which was too warm for the time of year. The really enjoyable summer weather was confined to the first and last ten days of the month. A brief but scorching heat wave beginning on 27 June brought the highest temperatures yet recorded in Germany this year. For much of the rest of the month the weather was unsettled, and somewhat cooler at times, with occasional bouts of extreme local weather, including thunderstorms, heavy rain, hail and violent gusts as the initial analysis by the Deutscher Wetterdienst (DWD) of data from its around 2,000 weather stations shows.>> More


Average U.S. temperature increases by 0.5 degrees F
Posted 30 June 2011

According to the 1981-2010 normals to be released by NOAA’s National Climatic Data Center (NCDC) on July 1, temperatures across the United States were on average, approximately 0.5 degree F warmer than the 1971-2000 time period.


Normals serve as a 30 year baseline average of important climate variables that are used to understand average climate conditions at any location and serve as a consistent point of reference. The new normals update the 30-year averages of climatological variables, including average temperature and precipitation for more than 7,500 locations across the United States. This once-a-decade update will replace the current 1971–2000 normals.>> More


MétéoSuisse: Bilan de juin 2011
Posted 30 June 2011

Le mois de juin 2011 fut en moyenne 1.5° plus chaud que la norme 1961-1990. Les sommes de précipitations furent très variables d'un endroit à l'autre avec des excédents en Valais, au Tessin et dans les Grisons. L'ensoleillement fut inférieur à la moyenne, notamment en Haut-Valais, dans les Alpes centrales, au Tessin et dans les Grisons. >> More


ECMWF Publishes Annual Report
Posted 30 July 2011ECMWF Annual                    Report 2009

The Centre's Annual Report provides an overview and a broad, non-technical description of ECMWF's main activities. informing about major achievements, key events of the year, the evolution of the forecasting system, research highlights, and our contribution to climate studiesIt also gives an indication of future plans of ECMWF. The Annual Report of each year is normally released in June/July of the following year.>> More



EUMETSAT Council approves SAF CDOP-2 and discusses EPS-SG Preparatory Programme Proposal
Posted 30 June 2011

EUMETSAT, the European Organisation for the Exploitation of Meteorological Satellites, held its 72nd Council meeting in Copenhagen, Denmark, on 28-29 June. The meeting was chaired by Prof. Petteri Taalas, Director-General of the Finnish Meteorological Institute. It was the last Council attended by the outgoing EUMETSAT Director-General, Dr. Lars Prahm, who will be succeeded by Alain Ratier, currently Deputy Director-General of Météo France, on 1 August 2011.

Council gave the green light for the second phase of the Continuous Development and Operations Phase (CDOP-2) for EUMETSAT’s Satellite Application Facility (SAF) network, ensuring funding of SAF activities for a period of five years beginning in March 2012.>> More


JMA to host Second Asia/Oceania Meteorological Satellite Users Conference Dec. 6-9
Posted 30 June 2011

The Asia and Oceania regions are frequently affected by severe natural phenomena such as tropical cyclones, torrential monsoons, volcanic eruptions, yellow sand storms, floods, sea ice and wildfires. In addition, the importance of monitoring the climate and the environment is increasing, prompting enhanced global interest in the field. In this regard, meteorological and earth observation satellites provide frequent and extensive observational information for use in disaster prevention and climate monitoring/diagnostics, and are indispensable in today’s world.>> More : les données du changement climatique accessibles à tous
Posted 30 June 2011 est le premier observatoire francophone des données scientifiques sur le changement climatique.

Les controverses qui ont éclatées en France et dans le monde, en particulier au moment du sommet de Copenhague en décembre 2009, ont fait apparaître la nécessité de rendre accessible à un large public les données scientifiques du changement climatique. a été conçu par Universcience avec le concours de laboratoires français des sciences du climat*, dont le Centre National de Recherches Météorologiques (CNRM) de Météo-France. Sa vocation est de constituer la référence francophone dans le domaine des indicateurs du changement climatique. >> More

AEMET: El trimestre marzo-mayo, el más cálido de la serie
Posted 30 June 2011

El trimestre marzo-mayo de 2011 ha resultado muy cálido a extremadamente cálido en todas las regiones, con una temperatura media de 15,3 ºC, que se sitúa 2,3 ºC por encima de su valor medio normal (13 ºC), lo que hace que este trimestre haya sido el más cálido de la serie histórica, iniciada en 1951, por delante de los correspondientes a los años 1997 (15,24 ºC) y 2006 (15,13 ºC). Las precipitaciones se han situado en torno a un 10% por encima de la media.

En todas las regiones las temperaturas medias estacionales superaron ampliamente los valores medios. Tan sólo en la franja mediterránea comprendida entre el sur de Cataluña y el litoral mediterráneo andaluz, así como en Canarias, parte de Baleares y provincia de Huelva  la anomalía de la temperaturas media trimestral quedó por debajo de los 2º C, mientras que en el resto de España osciló en general entre 2º C y 3º C, llegando a superar la diferencia con los valores normales los 3º C en algunas pequeñas áreas del suroeste de Galicia, País Vasco y zona del Sistema Central.  En Baleares la primavera fue también muy cálida a extremadamente cálida, mientras que en Canarias si bien el trimestre ha sido cálido a muy cálido en general, las anomalías térmicas han sido inferiores a las del territorio peninsular, situándose en promedio en torno a  1 º C. >> More


Pakistan Meteorological Department: Outlook for monsoon season (July-Sept 2011)
Posted 21 June 2011

Pakistan summer monsoon rainfall is invariably affected by the global regional and local climatic conditions prevailing prior to the season. Analysis of their combined effects indicates that the total amount of rainfall averaged over Pakistan during the monsoon season (July-September) will remain 10% below normal. However, there are chances of above normal rainfall in the northern half of Pakistan including Punjab, Khyber Pakhtunkhwa provinces and Kashmir. At occasions the interaction of easterly and westerly systems may result in heavy downpours causing localized urban/flash flooding.>> More


BoM: ENSO state remains neutral over the Pacific
Posted 22 June 2011

The Australian Bureau of Meteorology reports that climate indicators of ENSO remain at near normal levels, with neutral conditions now firmly established in the tropical Pacific. International climate model forecasts of ENSO show neutral conditions are likely to continue through 2011.

Atmospheric and oceanic indicators of ENSO including the trade winds, Southern Oscillation Index (SOI), cloudiness near the date-line and ocean temperatures have been at near normal levels for the last month after rapidly transitioning away from the La Niña conditions that had been present for the previous 9−12 months.

The influence of the Indian Ocean Dipole (IOD) on Australian rainfall is currently neutral. A weakly positive IOD event has been forecast to develop during winter. In the past, positive IOD events have been associated with drier conditions over parts of Australia, particularly in the southeast, during winter and spring. >> More

JMA: Higher Risks of Tide Inundations during Summer to Fall : Provision of Hourly Tide Level Calendars for Reconstruction Activities and Preparedness of the Residents in the Affected Areas
Posted 21 June 2011

The Japan Meteorological Agency (JMA) has released hourly astronomical tide level calendars at twelve ports in Tohoku and North-Kanto region, in order to support reconstruction activities and preparedness of the residents in the affected coastal regions.

Coastal areas experiencing land subsidence in Tohoku and North-Kanto region are now facing higher risks of tide inundations during summer to fall. Due to thermal expansion of sea water during the season, high water levels of spring tides are expected to rise by up to 10 to 15 cm from July to August, and by up to about 20 cm from September to October, compared with in June. >> More



Météo-Suisse : Les images satellitaires au service des installations solaires
Posted 21 June 2011

Les sources d'énergie renouvelables, dont l'énergie solaire, sont actuellement au centre des discussions. Pour une planification efficace des installations solaires, MétéoSuisse établit depuis peu des cartes de potentiel solaire. Elaborées à partir de données satellitaires de la dernière génération et résultant de longues années de travail de recherche et de développement, ces cartes représentent l'énergie solaire disponible pour n'importe quel lieu en Suisse avec une résolution de 2 kilomètres. La ville de Saint-Gall, l'une des premières clientes à y recourir, les utilise pour établir le potentiel de production d'énergie solaire de l'ensemble des toits de la ville. >> More

India Meteorological Department: Long Range Forecast Update for 2011 Southwest Monsoon Rainfall
Posted 21 June 2011

Summary of the Update Forecasts for 2011 Southwest Monsoon Rainfall
i) Southwest Monsoon Season Rainfall
Rainfall over the country as a whole for the 2011 southwest monsoon season (June to September) is most likely to be below normal (90-96% of Long Period Average, LPA).
Quantitatively, monsoon season rainfall for the country as a whole is likely to be 95% of the long period average with a model error of ±4%. The Long period average rainfall over the country as a whole for the period 1951-2000 is 89 cm.
ii) Monthly (July & August) Rainfall
Rainfall over the country as a whole in the month of July 2011 is likely to be 93% of its LPA and that in the month of August is likely to be 94% of LPA both with a model error of ± 9 %.
iii) Rainfall over Broad Geographical Regions
Over the four broad geographical regions of the country, rainfall for the 2011 Southwest Monsoon Season is likely to be 97% of its LPA over North-West India, 95% of its LPA over North-East India, 95% of its LPA over Central India and 94% of its LPA over South Peninsula, all with a model error of ± 8 %.>> More


CMA starts up Level Four emergency response for the No. 4 tropical storm
Posted 21 June 2011

At 11:00 a.m. today, China Meteorological Administration (CMA) starts up Level Four emergency response to cope with upcoming No. 4 tropical storm in northwest Pacific Ocean this year.   Path probability forecast of the No. 4 tropical storm in the next 48 hours from 10:00 a.m. on June 21. (Beijing Time). At 10:00 a.m. today, the tropical storm is located at the sea surface of 460 km southeast Taishan city of Guangdong province (19.7N, 116.6E) with maximum wind force up to scale 8 (18m/s).

It is forecasted to move northwest gradually with gaining intensity a little and approach coast areas of central and western Guangdong. It is likely to land in the areas from Taishan to Xuwen in Guangdong province from night of June 22 to morning June 23 with force scale 8. Affected by the storm, from June 21 to 24, there will be heavy rain or rainstorm affecting central and southern Guangdong, central and southern Guangxi, Hainan, Taiwan, and southern Yunnan, of which parts of southwestern Guangdong, southern Guangxi, northern Hainan, and southern Taiwan will be hit by severe rainstorm.>> More

Update on volcanic ash disruptions to flights in south-east Australia
Posted 21 June 2011

A tendril of ash from the Southern Ocean has moved rapidly to south-east Australia, driven by an intense low and strong southerly winds. The ash is forecast to clear throughout today and into tomorrow (Wednesday) - with the bulk forecast to clear tomorrow evening.

Director of the Bureau of Meteorology's Volcanic Ash Advisory Centre in Darwin, Dr Andrew Tupper, said the ash cloud has travelled over 4000 km in the past 24 hours at a speed of 170-190 km/h.

"The ash is still clearly visible on satellite imagery, and has been observed by a number of pilots flying at lower altitudes.

"The volcanic ash cloud is now more than two weeks old, and generally between 8 and 13 km (26 000 to 42 000 ft) in altitude, with the leading edge at an altitude of approximately 10 km (32 000 ft)," said Dr Tupper.>> More

Météo-France: Bilan de la situation au 16 juin 2011
Posted 21 June 2011

Le pays connaît actuellement une sécheresse exceptionnelle sur une grande partie du territoire. Cette situation est la conséquence de deux composantes bien distinctes :
- un déficit pluviométrique durant la période de recharge des nappes souterraines avec des
conséquences sur leur remplissage.
- un déficit pluviométrique exceptionnel durant le printemps, accompagné de températures très nettement supérieures aux normales. Ces conditions ont eu pour conséquence un
assèchement très précoce des sols superficiels.

Le temps pluvio-orageux de la première quinzaine de juin a toutefois permis d’améliorer quelque peu la situation des sols superficiels d’une large partie du territoire. Au 15 juin, les sols restent malgré tout dans un état de sécheresse sévère.>> More

EUMETSAT celebrates 25th anniversary
Posted 20 June 2011

The European Organisation for the Exploitation of Meteorological Satellites, EUMETSAT, celebrates its 25th anniversary on 19 June.

EUMETSAT has been monitoring weather and climate from space since 19 June 1986 and will do so for decades to come with the new Meteosat Third Generation geostationary and the planned EUMETSAT Polar System Second Generation (EPS-SG) polar-orbiting satellites.

See for a special anniversary feature, including an interactive timeline and interviews with past and present Directors-General.


Royal Meteorological Society Student Conference 2011
Posted 20 June 2011

The Royal Meteorological Society Student Conference on Atmospheric and Oceanic Science will take place from 30 June to 2 July 2011 at the University of Exeter, United Kingdom. This conference will provide an enjoyable opportunity to exchange ideas with other PhD students and young scientists working in meteorology.

The RMS wishes to thank the sponsors, Page Bros and the World Meteorological Organization.

The Welcome Pack, including a full programme and abstracts is available at:

UK Met Office: First OPAL climate survey results are in
Posted 20 June 2011

A special climate survey which we launched at the start of spring has received tens of thousands of results.

The Open Air Laboratories (OPAL) climate survey, launched in March, was completed by more than 16,000 people. The survey looks at ways in which we affect the climate and how the climate may affect us.

Since the start of the survey the country has experienced a record-breaking dry spring which was also the joint warmest on record, with weather varying from March frosts to April heat.

One area of the survey investigates perceptions of warmth, cold and clothing by participants. Almost 1,800 results have been recorded so far, providing valuable information on how our own response to weather changes throughout a season.>> More


CMA: Rainfall has weakened in middle and lower reaches of Yangtze River
Posted 20 June 2011

From June 19, the rainfall has weakened considerably in middle and lower reaches of Yangtze River and the weather is going to be mostly cloudy or overcast in the next three days.

The Central Meteorological Office forecasts that in the coming week the major rainfall region will locate at Yellow-Huaihe River Basin, Yangtze-Huaihe River Basin, South China, and eastern Southwest China bringing rainfall 30 to 70 mm. Yangtze-Huaihe River basin, and South China is likely to receive rainfall up to 90 to 120 mm and coastal areas in South China over 150 mm.

Chief forecaster Zong Zhiping introduces that parts of middle and lower reaches of Yangtze River will be affected by process rainfall with mild precipitation.

Since June first, middle and lower reaches of Yangtze River has seen four times of heavy rainfall. The rain process with severest rainfall and largest coverage happens from June 13 to 15, which has caused floods in Zhejiang, Anhui, Jiangsu, Jiangxi, Guizhou, Guangxi, and Hunan. >> More


JMA: Enhancement of Rainfall Observation in the Affected Areas in Tohoku Region
Posted 20 June 2011

The Japan Meteorological Agency (JMA) announced its enhancement of rainfall observations in the affected areas by “The 2011 off the Pacific coast of Tohoku Earthquake”. JMA installed nine ad-hoc rain-gauges equipped with a solar panel and a transmitter at the below sites and started their operations on June 14, 2011. The affected areas, experiencing loosed soils, land subsidence, and physically damaged embankments and drainage facilities due to the quake and tsunami, have become more vulnerable to sediment and flood disasters. The enhanced rainfall observation will enable provisions of more detailed meteorological information to the affected areas in a timely manner.>> More


Sudan Meteorological Authority: Sudan Seasonal Monitor
Posted 20 June 2011


Early and advanced movement of IFT northward, implied significant rainfall over the north part of Sudan with high rainfall amounts registered in the Southern and western part of Sudan during late May.

Good late May rainfall will support the agricultural situations in the southern Sudan and provide favorable situation for early growing in the southern Kordofan and Southern Darfur. Favorable conditions of growing seasons and replanting are maintained by late May good rainfall , especially in the southern and western parts of Sudan. Vegetation has significantly developed to average levels in the areas of Warab, Jonglei, Bahr Eljabal, Unity, Western Bahr Elghazal, Western Equatoria and Eastern Equatoria after the March and April dryness.

Forecasts for July-August-September rainfall from different sources (IRI and ECMWF) have become more consistent. Considering forecasts from SMA and from other institutions, expectations for this key period of the rainy season are of on average to above average rainfall.>> More


World Cup organisation committee co-operates with DWD
Posted 17 June 2011

Stadium weather forecasts for Women's Football World Cup

Just a couple of days before the start of the FIFA Women's Football World Cup Germany 2011TM – As always with outdoor events, the weather can have a major impact on the upcoming tournament.

This is why, as agreed by contract, the Deutscher Wetterdienst (DWD) provides the FIFA and DFB organisation committee from now on with special forecasts and warnings about any adverse weather development that might affect the nine World Cup stadiums in Germany. Football fans and spectators can find the latest stadium weather forecasts on the Internet at

As Germany's national meteorological service, the Deutscher Wetterdienst informs here about the current weather and severe weather situation at all World Cup sites, providing full text reports, graphics as well as the latest satellite and weather radar images. The stadium weather site furthermore includes forecasts for the next two days and climate figures for the venues of the tournament.>> More information


NOAA: Major flooding on the Mississippi river predicted to cause largest Gulf of Mexico dead zone ever recorded
Posted 15 June 2011

The Gulf of Mexico’s hypoxic zone is predicted to be the largest ever recorded due to extreme flooding of the Mississippi River this spring, according to an annual forecast by a team of NOAA-supported scientists from the Louisiana Universities MarineLong-term measured size of Gulf of Mexico hypoxic zone with 2011 forecast. Consortium, Louisiana State University and the University of Michigan. The forecast is based on Mississippi River nutrient inputs compiled annually by the U.S. Geological Survey (USGS).

 Scientists are predicting the area could measure between 8,500 and 9,421 square miles, or an area roughly the size of New Hampshire.  If it does reach those levels it will be the largest since mapping of the Gulf “dead zone” began in 1985. The largest hypoxic zone measured to date occurred in 2002 and encompassed more than 8,400 square miles. 


Vietnam National Hydro-Meteorological Service: Climate change poses real threat
Posted 15 June 2011

Temperature in Việt Nam is forecast to increase by around 2.30C on average a year by the end of the 21st century, according to recent climate change scenarios.

The scenarios also say that the total rainfall in the dry season is expected to dip while sea level will rise from 75cm-1m compared to the average level of the 1980-1999 period.

If sea level rises by 1m, 40% of the Mekong River Delta’s area and 11% of the Red River Delta will be submerged.

Accordingly, 11-12% of Việt Nam’s population will be consequently affected directly and 10% of the country’s GDP will be lost, according to a draft Strategy for climate change adaptation which is now under construction by the Ministry of Natural Resources and Environment (MONRE).>> More


Servicio Meteorológico Naciona (Mexico): Pronostico Estacional de precipitacion para Junio-Julio-Agosto. Producto Experimental
Posted 15 June 2011

La metodología empleada para elaborar el presente pronóstico, se basa en la correlación de predictores como las anomalías de la temperatura superficial del océano y la precipitación regionalizada para México durante el mes a pronosticar. Se realiza con ayuda del Software “Climate Predictability Tool (CPT)”.

EN EL PRONÓSTICO PROBABILÍSTICO se agrupa la precipitación en 3 categorías, lluvia normal, por arriba de lo normal y lluvia por debajo de lo normal, y se pronostica la probabilidad de que la precipitación para determinado mes se encuentre dentro de alguna categoría.

EL PRONÓSTICO DETERMINÍSTICO consiste en calcular la anomalía (diferencia entre el valor pronosticado y el valor climatológico o promedio de la lluvia) esperada para el mes a pronosticar, así, anomalías positivas indican lluvia por arriba del valor promedio o “normal” y anomalías negativas lluvia por debajo del promedio o normal. Se expresa en términos de anomalía porcentual, así, 100 % indica pronóstico de lluvia igual al promedio histórico, 50 % indica la mitad de lo que normalmente llueve, 150 % representa lo que precipita normalmente y 50 % adicional.>> More


UK Met Office: Scientists meet to improve cloud modelling
Posted 15 June 2011

8 June 2011 - Over 100 world leading scientists have gathered at the Met Office in Exeter to review the latest research in cloud physics, important in the development of both better weather forecasts and improved climate

The underlying theme of this international meeting is to increase understanding of the physical processes associated with clouds and cloud feedbacks in the present climate and in response to climate change.

Much discussion will focus on the increasing use of satellite data to evaluate and improve the representation of clouds in weather and climate models. This is an area in which significant progress has been made in recent years.>> More


Météo-France: Bilan de la sécheresse au 1er juin 2011
Posted 8 June 2011

La plupart des régions françaises connaissent à ce jour des conditions de sècheresse
hydrométéorologique exceptionnelles pour la saison. Cette sécheresse précoce est due à un
printemps 2011 particulièrement chaud et sec.

La quantité d’eau recueillie sur la France représente moins de la moitié du cumul moyen de
référence 1971-2000. Ce printemps est le plus sec des cinquante dernières années, devançant les printemps 1976 (54 %) et 1997 (60 %). Quelques nuances régionales apparaissent toutefois : les déficits ont été généralement plus marqués sur le nord et l’ouest du pays tandis que le Languedoc et l’est de la Corse ont connu des précipitations excédentaires.

Avec une température moyennée sur la France supérieure de 2,5 °C à la moyenne de référence établie sur la période 1971-2000, ce printemps 2011 se positionne au premier rang des printemps les plus chauds depuis le début du XXème siècle, devant ceux de 2007 (+2,1 °C) et 2003 (+1,8 °C).>> More


NOAA: Wallow Fire in Arizona Now Second Largest in State's History
Posted 8 June 2011 NASA MODIS

The Wallow Fire, in eastern Arizona, has burned 389,000 acres in parts of the Apache National Forest and is now the second largest wildfire in the history of the state. More than 5,000 people total have been evacuated. The fire is 0% contained. The fire has produced dense plumes of smoke visible from space and thick enough to reduce visibility to less than a mile in some places. The fire has also begun to threaten neighboring New Mexico and spillover smoke and disrupted flights and prompted an air quality alert on the other side of the border


IDEAM: Inició oficialmente temporada de huracanes en el Océano Atlántico, mar Caribe y Golfo de México
Posted 7 June 2011

Como es tradicional para esta época del año, desde el 1 de junio se inicia oficialmente la Temporada de Huracanes en el Océano Atlántico, mar Caribe y golfo de México, por lo cual el IDEAM sugiere a todos los Comités Departamentales y Locales de Atención y Prevención de Desastres, estar atentos, especialmente en las regiones del Archipiélago de San Andrés y Providencia, La Guajira, Magdalena, Atlántico, Bolívar, Sucre y Córdoba y, en el territorio marítimo colombiano en el mar Caribe, que históricamente han sentido los efectos directos de los ciclones tropicales; de manera indirecta, el norte y centro del territorio nacional han sido afectados por lluvias fuertes asociadas a las bandas nubosas que acompañan a los ciclones, produciendo crecientes súbitas, avalanchas e inundaciones. Estos efectos indirectos se han producido cuando los ciclones tropicales se han desplazado muy cerca de la Costa Caribe colombiana.>> More    


Servicio Meteorológico Naciona (Mexico): Altas temperaturas, propicio para la formación de tornados
Posted 7 June 2011

El Servicio Meteorológico Nacional (SMN) dependiente de la Comisión Nacional del
Agua (Conagua), informó que derivado de la inestabilidad atmosférica ocasionada por la
intensa onda de calor, asociado con una zona seca de vientos de los Oeste que
interaccionan con aire húmedo proveniente del Golfo de México, han generado la
formación de torbellinos que dependiendo de su tamaño e intensidad algunos han sido clasificados como tornados, con vientos superiores de 100 km/h y desplazamiento rápido >> More


NOAA's National Hurricane Center has joined the conversation on Twitter, effective with the start of the Atlantic hurricane season on June 1
Posted 7 June 2011

The NHC presence on Twitter is a prototype to help decision-makers and the public receive notifications of the very latest on hazardous tropical weather systems. The addition of NHC's voice via Twitter services to the social stream will enhance the ability of NHC and its partners to achieve their missions by building situational awareness, and allow for a broader reach of information to the public that it serves.

A tweet will be sent whenever NHC issues:

  • A public advisory regarding a tropical cyclone (TCP)
  • A tropical cyclone update (TCU)
  • A position estimate (TCE)
  • A tropical weather outlook (TWO)



Météo-France: L'enneigement en montagne durant l'hiver 2010-2011
Posted 8 June 2011

Copyright Météo-FrancePrometteur en début de saison,  l’enneigement de la saison 2010-2011 a été plus souvent décevant, surtout pour les Alpes du Nord, les Pyrénées et les massifs de moyenne montagne. Sur tous les massifs, le début d’enneigement est précoce. Fin novembre les valeurs d’enneigement sont partout conformes ou supérieures aux normales. La situation devient ensuite différente jusqu’en mars selon les massifs.

Sur les Alpes du Nord, la sécheresse (35 à 50% de déficit de précipitation de décembre à fin avril) maintient tout l’hiver des conditions d’enneigement nettement inférieures aux normales. Dans les Pyrénées, la sécheresse a été un peu moins marquée mais les épisodes perturbés, trop souvent accompagnés de douceur et de pluie à haute altitude, entraînent un enneigement très déficitaire en dessous de 2000 m.


Bureau of Meteorology of Australia: Heavy La Niña rainfall leaves autumn chill
Posted 7 June 2011

Autumn 2011 will go down in the record books as Australia's coolest autumn since at least 19501, figures released from the Bureau of Meteorology's National Climate Centre show today.

Nation-wide, autumn 2011 beats the previous record low set in 1960 (-0.95°C), with temperatures -1.15°C below the 1961-1990 average. The abnormally cool temperatures are largely the result of the strong 2010/11 La Niña event which brought heavy rainfall and cool daytime temperatures to Australia, before decaying in late autumn. Of the five coolest autumns nation-wide since 1950, four have occurred during or following La Niña events.

The record cold autumn ends a quite remarkable sequence of extremes for Australia as a result of the strong La Niña. >> More


India Meteorological Department: Onset and advance of monsoon
Posted 7 June 2011

Southwest monsoon normally sets in over Kerala around I June. This year, monsoon has set in over most parts of South Arabian Sea, Kerala, some parts of Tamilnadu, south Bay of Bengal and South Andaman Sea on 29 May 2011. Setting in of monsoon was delayed by about 10 days over Andaman Sea; however, it was early by 3 days over Kerala.
Due to strengthening of cross-equatorial flow over Arabian Sea and formation of an off-shore trough, monsoon further advanced rapidly and has covered entire Kerala, Tamilnadu and Goa, many parts of Karnataka and some parts of south Andhra Pradesh till today. Heavy to very heavy rainfall is occurring along the west coast for the last two days.>> More


CMA closely monitors weather and provides service for the long-awaited rainfall in Yangtze River valley
Posted 7 June 2011

From tomorrow on, the middle and lower reaches of Yangtze River valley will welcome moderate to heavy rain with isolated torrential rain. The long-awaited rainfall is expected to add water storage of reservoirs and alleviate drought for the dry areas. CMA has entered special working state since May 31 carrying out morning national weather consultation and drought-relief consultation. All levels of meteorological departments have strengthened rolling monitor and coordination with related sectors.

From June 3 to 7, Southwest China, Yangtze-Huaihe River valley, South of the Yangtze River, and South China will see moderate to heavy rain with isolated torrential rain bringing rainfall 30 to 50 mm with parts up to 60 to 90 mm and isolated 100 to 150 mm. On June 3, heavy rain will begin from Hunan and Hubei, of which northwestern Hunan will be hit by rainstorm. On June 4 and 5, rainfall will gain intensity sharply bringing moderate to heavy rain with isolated rainstorm to southern Hubei, northern Hunan, northern Jiangxi, most parts of Zhejiang, and southern Jiangsu and southern Anhui. The drought in these areas will be eased to some extent.>> More

Details on drought in China

AEMET: Mayo, el tercero más cálido de la serie histórica
Posted 8 June 2011Precipitación mayo 2011

El mes de mayo ha sido muy cálido a extremadamente cálido en toda España, con una temperatura media mensual de 2,9 ºC por encima del valor medio del mes (15,9 ºC), lo que le coloca en el tercer mes de mayo más cálido en el conjunto de España de toda la serie histórica (desde 1950), después de los de los años 1964 y 2006. Las precipitaciones fueron normales al situarse la media acumulada sobre el territorio español en torno a 60 mm., valor muy cercano al normal para este mes que es de 64 mm.>> More

Deutscher Wetterdienst: 2011 sunniest spring on record
Posted 3 June 2011

"Germany enjoyed summery weather in spring 2011: sunshine amounts were higher this spring than in any other spring since records began and only spring 2007 was warmer. On the other hand," explained Deutscher Wetterdienst (DWD) press officer Uwe Kirsche, initial
analysis of the data from around 2,000 weather stations shows that "rainfall was lower in the months of March, April and May than it has been at any other time since 1893."
At 10.1°C second warmest spring since 1881. >> More


Deutscher Wetterdienst: An exceptionally warm, far too dry and very sunny May
Posted 3 June 2011

The weather in Germany in May 2011 An exceptionally warm, far too dry and very sunny May
Offenbach, 30 May 2011 – After a cool, wet and dull May last year, May 2011 showed another side of the weather in Germany. The initial analysis by the Deutscher Wetterdienst (DWD) of data from its around 2,000 weather stations shows that, despite getting off to a cold start, May 2011 was very dry with abundant sunshine and was ultimately much too warm.>> More


UK and US to undertake collaboration on space weather
Posted 1 June 2011

U K Prime Minister David Cameron and US President Barack Obama welcome the growing partnership between the Met Office and the U.S. National Oceanic and Atmospheric Administration's (NOAA) National Weather Service in working toward the delivery of space weather alerts.

The signing of a Memorandum of Understanding between the Met Office and  NOAA in February 2011 provides for a coordinated US-UK partnership. This involves a range of UK and US agencies and organisations in the delivery of Space Weather alerts to help provide critical infrastructure protection around the globe.

The two governments have announced that they will embark together on an ambitious programme to create the world's first combined space weather model capable of forecasting terrestrial weather and also indicating where, when, and for how long space weather effects will persist in our upper atmosphere. Space weather anomalies can disrupt and degrade GPS-enabled positioning, navigation, and timing capabilities. >> More


New Zealand MetService welcomes new Chief Executive
Posted 1 June 2011

MetService’s newly-appointed chief executive Peter Lennox is no stranger to science and technology, says MetService chairman Sarah Astor.

“Peter has many years’ experience working in and with the global biotechnology sector, and brings a well-balanced blend of commercial and scientific disciplines to the role,” she says.

Peter joins MetService from New Zealand Trade and Enterprise’s executive team where, as Group General Manager Operations and previously Group General Manager ICT & Biotechnology across a number of regions, he worked closely with New Zealand’s private sector to create wealth globally.

Peter Lennox says, “As not only a highly-respected scientific institution, but also a global leader in commercial meteorological science and weather communication technologies, MetService is already delivering significant commercial benefits back to its owners – the New Zealand public.”>> More


AEMET amplía y detalla observaciones y predicciones en su web
Posted 31 May 2011

AEMET amplía y detalla desde hoy, 30 de mayo, los datos de observaciones y las predicciones en su página web y en su servidor ftp de acuerdo con el compromiso adquirido en su nueva política de datos. Se incrementa así de forma significativa el conjunto que puso disponible el pasado 30 de noviembre.>> More


Nigeria Climate Review Bulletin 2010
Posted 31 May 2011

Nigeria is part of the global community and therefore not immune to the impacts of climate
change. Just like the MDGs, our Vision 20: 2020 may also be at risk if Climate Change adaptation and mitigation strategies are not put in place. Therefore, there is need for adequate understanding of past, present and future climate trends to enable policy makers manage our changing climate and mainstream climate information into our national and global development plans. This implies that climate risk information derived from analyses of Nigerian climate data need to be integrated into our national planning and decision-making. Such integration should encompass both the challenges that climate extremes pose and the opportunities climate change presents, especially those associated with the green economy, as a pathway for sustainable development. It is in the light of this concept that NIMET publishes the Nigeria Climate Review Bulletin annually to assess the climate of the previous year and also to bridge the gap between climate and socio-economic development. The publication compliments the Seasonal Rainfall Prediction which NIMET also presents to the public at the beginning of each year.

The review of the climate over Nigeria in 2010 has shown that warmer than normal conditions prevailed over greater parts of the country especially in the north and central states. Rainfall amounts in the year over the country were generally higher than long term mean values except in places in and around Kwara State, leading to floods and opening of dams.>> More


Météo-France: Bilan du printemps 2011
Posted 31 May 2011

Avec une température moyennée sur la France supérieure d’environ 2,6 °C à la moyenne de référence établie sur la période 1971-2000, ce printemps 2011 se positionne au premier rang des printemps les plus chauds depuis le début du XXème siècle, devant ceux de 2007 (+2,1 °C) et 2003 (+1,8 °C). Ces écarts ont été encore plus marqués pour les températures maximales de l’après-midi (+3,8 °C) que pour les températures minimales de fin de nuit (+1,4 °C).
Le printemps 2011 a également été exceptionnel par ses faibles précipitations : la quantité d’eau recueillie sur la France représente environ 45 % du cumul moyen de référence 1971-2000. Ce printemps est le plus sec des cinquante dernières années, devançant les printemps 1976 (54 %) et 1997 (60 %). Quelques nuances régionales apparaissent toutefois : les déficits ont été généralement plus marqués sur le nord et l’ouest du pays tandis que le Languedoc et l’est de la Corse ont connu des précipitations excédentaire. >> More


CMA releases Yellow category alert of meteorological drought
Posted 31 May 2011

The Central Meteorological Office of China Meteorological Administration (CMA) continued to release Yellow category alert of meteorological drought at 6:00 p.m. on May 30: 

According to the monitor on May 30, severe meteorological drought exists in northern and eastern Hubei, northern Hunan, central and southern Anhui, northern Jiangxi, southern Jiangsu, northern Zhejiang, and Shanghai. These will be light rain or shower with uneven distribution and little rainfall in the drought-hit areas in the next three days. The meteorological drought will persist. (May 30)


India Meteorological Department: Monsoon onset over Kerala
Posted 29 May 2011

Southwest monsoon has set in over Kerala today, the 29th May 2011, 3 days in advance to the normal onset on 1st June. Southwest Monsoon has also advanced into most parts of south Arabian Sea and some parts of Tamil Nadu, south Bay of Bengal, south Andaman Sea.

The northern limit of monsoon passes through 11° N / 60° E, 11° N / 70°E, Aminidivi, Kozhikode, Kodaikanal, 8°N / 80°E, 8° N / 90°E , Nancowry and 9° N / 99° E. Widespread rainfall has occured over Kerala and Lakshadweep, scattered over south Tamil Nadu & Nicobar Islands during past 24 hours. The chief amounts of rainfall (1 cm & above) recorded at 0830 hours IST of today are: Kottayam 10, Cochi, Kozhikode, 7 each, Karipur 6, Cochi(AP) 4, Aminidivi, Minicoy and Kavarati 3 each and Mangalore 1.

Onset of southwest monsoon over Kerala took place in association with an upper air cyclonic
circulation over southeast Arabian Sea off Kerala coast. Conditions are favourable for further advance of southwest monsoon over some more parts of Arabian Sea, remaining parts of Kerala, some more parts of Tamilnadu, south Bay of Bengal and Andaman Sea and some parts of Karnataka during next 2 – 3 days.

Kenya Meteorologcal Department: Review of rainfall during the "long rains" season and the outlooks for the June-July-August season
Posted 26 May 2011

The March to May 2011 seasonal rainfall has almost ceased over most parts of the country. As per the prediction, the rainfall was highly depressed and poorly distributed, both in time and space, over most parts of the country. This was more so over the North-eastern parts of Kenya and the Coastal strip where most meteorological stations recorded less than 50 percent of their seasonal Long-Term Means (LTMs) for March to May. The rainfall was also characterised by late onset in some parts of the country. The poor rainfall performance impacted negatively on the agricultural and pastoral activities in various parts of the country. The water levels in the hydroelectric power generation dams also went down following the generally poor rainfall performance in the catchment areas.

The climate outlook for June-July-August (JJA) 2011 season indicates that the Western highlands are likely to receive near normal rainfall with a tendency to above normal while generally depressed rainfall is likely to be experienced over the Central Rift Valley and the coastal Strip. The central highlands including Nairobi area are expected to experience cool, cloudy and drizzly conditions. Rainfall emanating from western Kenya may occasionally spread to the Central districts and Nairobi. Fairly low temperatures are also expected to be experienced in Central Rift Valley and parts of the highlands west of the Rift Valley).>> More


UK Met Office: 2011 Atlantic tropical storm season forecast
Posted 26 May 2011

Our forecast for this year's North Atlantic tropical storm season confirms it will be quieter than the very active season in 2010.

Our forecast for the 2011 season is for 13 tropical storms between June and November, with a 70% chance that the number will be in the range 10 to 17, which is very close to the 1980-2010 long-term average of 12. This is in contrast to 2010 which had a total of 19 tropical storms.>> More


NOAA: 2011 tornado information
Posted 26 May 2011

NOAA satellite shows storm system moments before spawning tornado in Joplin, Mo. More deadly tornadoes in Oklahoma, Kansas, and Arkansas claimed 13 additional lives on May 24, 2011. During the severe weather outbreak, two separate tornadic supercells approached Norman, Oklahoma and the National Weather Center building where NOAA National Weather Service facilities are located.

On Sunday, May 22, 2011, a devastating tornado hit the city of Joplin, Mo., leaving an estimated 123 people dead and 750 others injured, about 1,500 people remain unaccounted for in Joplin.

The Joplin tornado is the deadliest since modern recordkeeping began in 1950 and is ranked 8th among the deadliest tornadoes in U.S. history.>> More


Summer 2011 UV Outlook
Posted 26 May 2011 a photograph of the sun

Environment Canada scientists predict that UV (ultraviolet) values across Canada will be about three to four per cent higher during the summer months, and possibly even higher for some days in the spring, as compared to pre-1980 levels, due to the reduced thickness of the ozone layer. Record ozone thinning in the Arctic this spring is expected to contribute to these higher UV values.>> More



Australian Bureau of Meteorology: La Niña reaches its end
Posted 26 May 2011

The Bureau of Meteorology's latest climate update issued today (25 May), has announced the final curtain call for the climate phenomenon known as La Niña.

Dr Andrew Watkins, Manager of the Bureau's Climate Prediction Services said La Niña has played a spectacular and at times devastating role in shaping Australia's climate since mid-last year. However rapid changes in Pacific climate patterns over the past few weeks have finally brought the event to a close.

"This most recent La Niña [2010-2011] will go down in the record books as one of the strongest in living memory. It's been nearly 40 years [1975-76] since Australians have witnessed a La Niña event of this intensity," said Dr Watkins.>> More


Chinese Meteorological Administration: FY-3B meteorological satellite put into use
Posted 26 May 2011

On May 26, State Administration for Science, Technology and Industry for National Defense held a ceremony in Beijing to hand over polar-orbiting meteorological satellite FY-3B to China Meteorological Administration (CMA). For the first time, China has realized dual polar-orbiting satellites’ monitoring. The global observation frequency has enhanced from 12 hours to 6 hours.

The FY-3B meteorological satellite was launched on November 5, 2010. FY-3 is a series of the second generation polar-orbiting meteorological satellites of China which provide global, 3-dimentional, quantitative and multi-spectral remote sensing data under all weather conditions, to meet new and higher requirements in modern meteorological operations, especially in numerical weather predictions.>> More    

IDEAM informa que la region Andina entro en la etapa de transicion hacia la temporada seca de mitad de ano
Posted 26 May 2011

El IDEAM informa que la región andina entró en la etapa de transición (días lluviosos alternados con días secos) hacia la temporada seca de mitad de año, que normalmente se presenta entre mediados de junio, julio, agosto y mediados de septiembre.  Por lo anterior, se esperan mañanas mas soleadas, para los próximos días en gran parte de la región Andina, sin embargo, aún se esperan lluvias menos intensas en horas de la tarde y noche en sectores de los Santanderes, Antioquia, Boyacá, Cundinamarca y Eje Cafetero. >> More


NOAA hurricane outlook indicates an above-normal Atlantic season
Posted 24 May 2011

The Atlantic basin is expected to see an above-normal hurricane season this year, according to the seasonal outlook issued by NOAA’s Climate Prediction Center – a division of the National Weather Service.

Across the entire Atlantic Basin for the six-month season, which begins June 1, NOAA is predicting the following ranges this year:

12 to 18 named storms (winds of 39 mph or higher), of which:
6 to 10 could become hurricanes (winds of 74 mph or higher), including:
3 to 6 major hurricanes (Category 3, 4 or 5; winds of 111 mph or higher)

Read more

Un nouveau radar pour mieux observer les précipitations et gérer les risques naturels dans les zones de montagne de la région Provence-Alpes-Côte d’Azur
Posted 23 May 2011

Météo-France et le Cemagref officialisent aujourd’hui à La Mure-Argens (Alpes-de-Haute-Provence) la mise en service du premier radar déployé dans le cadre du projet RHyTMME, en présence de Jean-Yves Roux, conseiller régional de la Région Provence-Alpes-Côte d'Azur, de Pierre Coron, sous-préfet de Castellane et d’Anne-Marie Levraut, chef du service des risques naturels et hydrauliques de la Direction générale de la prévention des risques du ministère du Développement durable.

Du fait de son relief montagneux et de son climat méditerranéen, la région Provence-Alpes-Côte d’Azur est particulièrement vulnérable aux inondations, crues torrentielles, mouvements de terrain, avalanches et feux de forêts. Ces phénomènes naturels sont dépendants des précipitations (pluie, grêle, neige) ou, dans le cas des feux de forêt, de leur absence.

Dossier de presse

Communiqué de presse

The Nigeria inaugurates new national weather forecasting and climate research centre
(posted 23 May)

In light of climate impact and the increase in meteorological hazards, the Nigerian Meteorological Agency (NIMET) has established a National Weather Forecasting and Climate Research Centre for providing efficient climate services. The Centre, located in Abuja, will engage in coordinated operation and research activities in the areas of applied meteorology, weather forecasting, climate modelling and climate information services. It was inaugurated on 10 may 2011 by H.E. Mrs Fidelia Akuabata Njeze, Minister of Aviation, Federal Republic of Nigeria.




México: Inicia en el Océano Pacífico la temporada de lluvias y ciclones tropicales 2011
Posted 23 May

El SMN prevé la formación de 14 ciclones troplicales en el Océano Pacífico, lo que representa un número dentro del promedio histórico para la región
La Conagua cuenta con 18 Centros Regionales de Atención de Emergencias con equipo portatil especializado para suministro de agua potable, bombeo, saneamiento básico, limpieza de líneas de alcantarillado, encalamiento y colocación de costalera, entre otros
Como parte de la coordinación y el fortalecimiento de mecanismos de prevención de la ciudadanía entre Federación, Estados y Municipios ya se cuenta a nivel nacional con 24 mil 570 refugios para atender a 3 millones de personas ubicadas en zonas de riesgo.>> More

L’observation des températures de surface de l’Atlantique nord :
une aide à la planification des vendanges du Pinot noir ?

Une étude récente publiée dans la revue Climate Research montre que l'observation des variations de température à la surface de l'océan Atlantique fournirait six mois à l'avance un indicateur précieux sur la date des vendanges du Pinot noir en Bourgogne. Ces travaux ont été menés par Yves M. Tourre, climatologue diagnosticien à Météo-France, Daniel Rousseau, membre du Conseil supérieur de la météorologie, Lionel Jarlan du Centre spatial d'étude de la Biosphère (Institut de recherche pour le développement), en collaboration avec Emmanuel Le Roy Ladurie et Valérie Daux. >> Communiqué de presse

Etude en Anglais

Australian Bureau of Meteorology: La Niña near its end
Posted 11 May 2011

The 2010−11 La Niña event is nearing its end, with most indicators approaching neutral values. Climate models surveyed by the Bureau of Meteorology suggest that the Pacific Ocean will continue to warm over the coming months, with neutral conditions likely to persist through the austral winter.

Steady warming of the equatorial Pacific Ocean since mid-January has resulted in near-normal ocean temperatures. Atmospheric indicators of La Niña are now responding to these changes in the ocean and an active Madden Julian Oscillation, resulting in a weakening of trade winds, changes in cloudiness and an easing of typical La Niña pressure patterns. Likewise, the Southern Oscillation Index (SOI), which recorded its highest April value since 1971, has dropped from above +25 to +11 in the past fortnight. >> Press release


Weather, climate extremes punctuate very warm, wet April in U.S.
Posted 11 May 2011

Weather, climate extremes punctuate warm, very wet April in U.S. Historic flooding, a record-breaking tornado outbreak and devastating wildfire activity made April 2011 a month of historic climate extremes across much of the United States, according to scientists at NOAA’s National Climatic Data Center (NCDC) in Asheville, N.C.

The average U.S. temperature in April was 52.9 degrees F, which is 0.9 degrees F above the long-term (1901-2000) average. April precipitation was 0.7 inches above the long-term average, the 10th wettest April on record. This monthly analysis, based on records dating back to 1895, is part of the suite of climate services NOAA provides.>> Press release

Wea ther, climate extremes punctuate warm, very wet April in U.S crease understanding of climate change across Singapore and South East Asia|

UK Met Office signs agreement with Singapore
Posted 10 May 2011

10 May 2011 - To help Singapore build up climate science capabilities to prepare for climate change, the Met Office has signed a Memorandum of Understanding with the Singapore National Environment Agency (NEA).

The collaboration aims to enhance the NEA Meteorological Services Division's climate science capability to produce reliable projections of Singapore's rainfall, temperature, wind and sea level for different time-scales up to 2100.>> Press release


AEMET: El abril más cálido
Posted 10 May 2011

  El mes de abril ha resultado extraordinariamente cálido en prácticamente toda España, con una temperatura media de 3,9 ºC por encima del valor medio del mes, lo que le sitúa en el abril más cálido de toda la serie histórica. La precipitación fue normal.>> More information


CMA strengthens measures for grain production service
Posted 10 May 2011

Recently China Meteorological Administration (CMA) publicized the 2011 meteorological service action plan for national grain production. The plan aims to provide better meteorological service for grain production increase by strengthening efforts in critical season and production phase service, meteorological disaster mitigation, construction of agrometeorological service system and meteorological disaster mitigation system in rural areas (Two Systems), weather modification for grain production, and capability construction of agrometeorological disaster monitor and prediction.

It is reported that all levels of meteorological departments in 800 main grain production counties of 24 provinces would carry out meteorological service at critical season and time and ensure at least one soil moisture automatic observation station is set up in each county. In the 50 grain high production counties, meteorological departments will carry out special service and equip 2 to 3 soil moisture automatic observation stations.>> More information


Australian Bureau of Meteorology: International meeting reaches a new tsunami agreement
Posted 10 May 2011

Representatives from countries around the Indian Ocean reached an agreement today (6 May) on a new service for improved tsunami threat information to commence in October (2011). The decision comes on the final day of a week long gathering of international representatives for the Intergovernmental Coordination Group (ICG) for the Indian Ocean Tsunami Warning & Mitigation System, held at the Bureau of Meteorology's Melbourne head office.

Mr Rick Bailey, incoming Chair of the ICG, said the new service will provide much more detailed tsunami threat information for Indian Ocean countries than the current Interim Advisory Service. "The Regional Tsunami Service Providers will help Indian Ocean countries better prepare their national tsunami warnings, providing more accurate information to save lives and reduce the frequency of false alarms.>> Press release

ted on 5 May 2011

MétéoSuisse: 16e congrès de l'Organisation météorologique mondiale
Posted 5 May

Le 16e congrès de l'Organisation Météorologique Mondiale (OMM) se tiendra à Genève du 16 mai au 3 juin 2011. Il sera principalement consacré aux nouveaux services liés aux changement climatiques et à la gestion d'événements extraordinaires comme l'éruption du volcan islandais qui a perturbé le trafic aérien l'année dernière. Le Conseil fédéral a défini les directives pour la délégation suisse.
Le Conseil fédéral habilite la délégation suisse à approuver une hausse de 4.5% des contributions obligatoires versées à l'OMM pour les années 2012 à 2015. La Suisse soutiendra par ailleurs l'instauration d'un système international de services climatologiques ("Global Framework for climate services" GFCS) et se portera candidate au siège de secrétariat du GFCS.>> Press release


NOAA: Historic Flooding Along Lower Mississippi
Posted 4 May 2011

Historic flooding is occurring or expected View of forecast river conditionsalong the lower Mississippi River, with precipitation estimates of 10-20+ inches from the lower Ohio Valley southwestward through the mid to lower Mississippi Valley and portions of the Oklahoma and Arkansas. The flooding is expected to have major impacts to economy, including both agriculture and navigation.>> Details



CMA: Interview with 3 experts from WMO
Posted 4 May 2011

Subordinated to China Meteorological Administration (CMA), CMA Training Center (CMATC) is a national higher continuing education and on-the-job training institution for the meteorological departments. It is also designated as the Beijing Component of WMO Regional Training Center (WMO RTC Beijing) in China. Over the past decade, CMATC focuses on the needs for developing Chinese meteorological service, and for building up qualified human resources.

On April 28, 3 experts sent by WMO——Ms Vilma Castro (the team leader), Mr. Yinka Adebayo and Ms Zhang Qinghong went to the WMO RTC External Assessment for WMO RTC Beijing. In the morning of April 30, these experts accepted the interview of Kong Yan, journalist of China Meteorological News Press>> Full story


UK Met Office: Warmest April on record
Posted 4 May 2011

Provisional Met Office climate figures for April 2011 indicate that the month is the warmest on record with many parts of the UK seeing temperatures 3 to 5 °C warmer than normal. The month is also the 11th driest April in the UK. These records go back more than 100 years, to 1910.

The UK average temperature was 10.7 °C exceeding the previous warmest April on record of 10.2 °C in 2007.>>Full Text


Météo-France: Avril 2011, deuxième mois d'avril le plus chaud depuis 1900
Posted 4 May 2011Cliquez pour agrandir - Copyright Météo-France

La France métropolitaine a connu cette année un mois d’avril exceptionnellement chaud, sec et ensoleillé. Ces conditions remarquables résultent de l’influence persistante de conditions anticycloniques sur la métropole.

Avec une température moyenne supérieure de 4,0°C à la moyenne de référence (calculée sur la période 1971-2000), avril 2011 se positionne au deuxième rang des mois d’avril les plus chauds depuis 1900, derrière avril 2007 (+4,3°C) et loin devant avril 1945 (+2.8°C), 1961 et 1949 (+2,6°C). Ces écarts sont plus marqués pour les températures maximales de l’après-midi (+5,5°C) que pour les températures minimales de fin de nuit (+2,5°C). A l’exception de quelques jours plus proches de la normale autour du 15 avril, les températures quotidiennes se sont maintenues autour de valeurs bien supérieures tout au long du mois. Entre le 6 et le 11, elles ont même atteint des valeurs sans égal depuis 1947 pour une première quinzaine d’avril. Plusieurs records mensuels de température maximale quotidienne ont été battus dans la moitié sud de la France ainsi que dans les Alpes et localement en Bretagne.

NOAA: April 2011 tornado information
Posted 2 May 2011

NOAA's preliminary estimate is that there were 312 tornadoes during the entire outbreak from 8:00 a.m. EDT April 26 to 8:00 a.m. April 28, 2011.

  • During the 24-hour period from 8:00 a.m. EDT April 27 to 8:00 a.m. EDT April 28, The National Weather Service (NWS) estimates there were a total of 226 tornadoes.
  • The NWS Storm Prediction Center issued severe weather outlooks five days in advance and tornado watches hours in advance.
  • NWS Weather Forecast Offices issued life-saving tornado warnings, with an average lead-time of 24 minutes. NWS issued warnings for more than 90 percent of these tornadoes. More


AEMET recibe el certificado ISO 9001:2008 a los servicios que presta a la navegación aérea
Posted 2 May 2011

29/04/2011  La Agencia Estatal de Meteorología ha recibido la certificación ISO 9001:2008 a los servicios meteorológicos que presta a la navegación aérea. El presidente de AEMET, Ricardo García Herrera, recibió este certificado por parte del director general de AENOR, Ramón Naz Pajares, en un acto presidido el 29 de abril por la secretaria de Estado de Cambio Climático, Teresa Ribera.

El certificado del Sistema de Gestión de la Calidad de la Asociación Española de Normalización y Certificación (AENOR) está basado en la norma internacional ISO 9001, la herramienta de gestión de la calidad más extendida en el mundo con más de un millón de certificados en 178 países. Su certificación indica que se mejora los procesos y se logra una mayor implicación de los profesionales de cara a ofrecer un servicio de calidad al exterior.>> Press release


India Meteorological Department: Long Range Forecast for 2011 South-west Monsoon Season Rainfall
Posted 19 April 2011

India Meteorological Department (IMD) follows a two-stage forecasting strategy for long range forecasting of the south-west monsoon season rainfall over the country as a whole. The Long Period Average (LPA) of the south-west monsoon season rainfall over the country as a whole for the period 1951-2000 is 89cm. The first long range forecast for the south-west monsoon season (June-September) rainfall is issued in April and the forecast update is issued in June.

IMD’s long range forecast for the 2011 south-west monsoon season (June to September) is that the rainfall for the country as a whole is most likely to be Normal (96-104% of Long Period Average (LPA)). There is very low probability for season rainfall to be deficient (below 90% of LPA) or excess (above 110% of LPA).

Quantitatively, monsoon season rainfall is likely to be 98% of the LPA with a model error of ± 5%. The LPA of the season rainfall over the country as a whole for the period 1951-2000 is 89 cm.>> Press release

Hong Kong Observatory launches Aviation-Weather Disaster Risk Reduction website for WMO's Aeronautical Meteorology Programme
Posted 18 April 2011

Figure 1: World Meteorological Organization 'Aviation-weather Disaster Risk Reduction' (ADRR) website hosted and operated by the Hong Kong Observatory The Hong Kong Observatory launched the “Aviation-weather Disaster Risk Reduction” (ADRR) website to WMO members and aviation users on 18 April 2011.  The website is specially tailored to serve the aviation community.  It is developed under the lead of the Hong Kong Observatory as a regional Pilot Project on Aviation-weather Disaster Risk Reduction in RAII (Asia) and RAV (South-west Pacific) established by the Commission for Aeronautical Meteorology (CAeM) of WMO.  The objective is to help the aviation community in the planning of airport operations, reduction of risk and disruption due to weather, thereby enhancing aviation safety. >> Press release


MétéoSuisse: La sécheresse de 1976 en Suisse et le point sur la situation actuelle
Posted 18 April 2011

La situation devenant préoccupante du point de vue de la sécheresse actuelle, MétéoSuisse a fait une étude comparative avec la dernière grande sécheresse du XXème siècle, celle de 1976.

Si l'on considère que la période de janvier à juin 1976 fut la plus sèche jamais enregistrée depuis 1870, il est très préoccupant de constater que les quatres premiers mois de 2011 sont encore plus secs que les mois correspondants de 1976, et même très nettement pour les stations de Genève, Sion, Château-d'Oex, Zurich et Davos ; et ceci avec un historique des 12 mois précécents également plus déficitaire.

En conclusion

L'année 2011 semble bien partie pour figurer en bonne place parmi les sécheresse qui ont frappé la fin du 19ème et le 20ème siècle. >> Full text


Météo-France: Chaleur et déficit d'enneigement records dans les Alpes et les Pyrénées
Posted 18 April 2011

La période exceptionnellement chaude qu’a connue l’ensemble de la France durant les dix premiers jours d’avril a eu des conséquences remarquables dans les Alpes et les Pyrénées : de nombreux records de température ont été battus, tandis que le déficit d’enneigement s’est accentué, atteignant lui aussi des valeurs record.

La chaleur inhabituelle installée dès le 1er avril s’intensifie entre le 6 et le 10. La masse d’air recouvrant les Alpes présente alors les caractéristiques de celles d’un mois de juillet : l’isotherme 0°C (altitude au-delà de laquelle la température devient négative) se maintient durant ces cinq jours entre 3400 m et 3900 m, culminant par endroits vers 4100 m le 8.>> Full Text

NOAA: Earth had 13th warmest March on record
Posted 18 April 2011

The Earth experienced the 13th warmest March since record keeping began in 1880, as the climate phenomenon La Niña continued to be a significant factor. The annual Global surface temperature Anomalies - March 2011.maximum Arctic sea ice extent was reached on March 7 and tied with 2006 as the smallest annual maximum extent since record keeping began in 1979.

The monthly analysis from NOAA’s National Climatic Data Center is part of the suite of climate services NOAA provides government, business and community leaders so they can make informed decisions.

Global surface temperature Anomalies - March 2011.
High Resolution (Credit: NOAA)


MétéoSuisse: Début avril 2011 : Chaleur record et sécheresse
Posted 11 April 2011

Première décade d'avril : records de température

Des températures maximales record pour une première décade d'avril  ont été enregistrées sur plusieurs stations de plaine du réseau de MétéoSuisse. Les premiers records avec des températures estivales, ont été enregistrée entre le 02 et le 03 avril avec 26.0°C à Sion et 25.9°C à Coire.

Les  journées du 06, 07 et 08 avril 2011 ont aussi été marquées par de nombreux records pour une première décade.>> Full text


Accession agreement between Slovenia and the European Centre for Medium-Range Weather Forecasts signed
Posted 11 April

On 8 April 2011, Mr Roko Žarnić, Slovenian Minister for Environment and Spatial Planning, and Mr Dominique Marbouty, Director-General of the European Centre for Medium-Range Weather Forecasts (ECMWF), signed the “Agreement between the Government of the Republic of Slovenia and ECMWF on the accession of the Republic of Slovenia to the ECMWF Convention and related terms and conditions” in Ljubljana. Mr Silvo Žlebir, Director General of Slovenian Environment Agency, and Mr Klemen Bergant, Director of Slovenian Meteorological Office and Permanent Representative of Slovenia with the World Meteorological Organization (WMO), also attended the ceremony. On the basis of the signed accession agreement, Slovenia will become ECMWF’s twentieth Member State.>> Full text


NOAA: Drought Continues to Intensify Across Large Portion of Country
Posted 11 April 2011

Drought Continues to Intensify Across Large Portion of Country.

  United States Seasonal Drought Outlook

Drought continues to be a serious problem across a large portion of the country. The April through June 2011 U.S. Seasonal Drought Outlook indicates that drought is expected to intensify or persist across the Southwest, Southern Plains and other areas. The latest U.S. Drought Monitor shows that nearly 1/3 of the contiguous U.S. is currently experiencing drought conditions, with exceptional drought (D4) conditions indicated for the contiguous U.S. for the first time since November 2009.>> Full text



AEMET: Marzo arroja un 50% más de precipitación
Posted 8 April 2011

Marzo arroja un 50% más de precipitación

  Precipitación marzo 2011

El mes de marzo ha resultado muy húmedo en general, con una precipitación media acumulada en torno a 68 mm, un 50% por encima del valor normal de 46 mm. La temperatura media del mes se sitúa dentro de los valores normales.>> Full text





Météo-France présent à la 3ème édition de Safer Seas
Posted 8 April 2011

Météo-France* sera présent à la 3ème édition de Safer Seas qui se tiendra à Brest du 10 au 13 mai. Cette manifestation internationale, dédiée aux problématiques de la sécurité et sûreté maritimes, réunit des opérateurs et professionnels de la mer de toutes disciplines et compétences. L’édition 2011 est dédiée au changement climatique et à ses défis pour la navigation en mer  avec trois volets essentiels :
- Politiques, réglementations, innovations technologiques et moyens opérationnels : les avancées en matière de sécurité maritime depuis Safer Seas 2007 ;
- Politiques de sécurité maritime de demain face aux enjeux et évolutions climatiques ;
- Contexte géostratégique et sûreté maritime : les dossiers sensibles.>> Full text


Hong Kong Observatory: My Little Observatory website launched
Posted 8 April 2011


  My Little Observatory website

The Hong Kong Observatory launched the new My Little Observatory website today (April 4). My Little Observatory website provides many weather related knowledge and information as well as some interactive games. Children and other interested parties are welcome to visit the site at>> Full text



México y Haití fortalecen relaciones en materia de meteorología y climatología
Posted on 6 April 2011

Especialistas mexicanos imparten un diplomado a meteorólogos de Haití
El intercambio de información especializada entre México y Haití reducirá los riesgos de pérdidas humanas antes fenómenos hidrometeorológicos

El intercambio de información en materia de meteorología y climatología entre México y
Haití permitirá desarrollar mejores servicios especializados, los cuales servirán para que
ambos países estén mejor preparados y se disminuyan las riesgos de pérdidas,
principalmente humanas, generadas por el impacto de los fenómenos
hidrometeorológicos, que son cada vez más extremos como consecuencia del cambio
climático, aseveró Adrián Vázquez Gálvez, Coordinador General del Servicio
Meteorológico Nacional (SMN), dependiente de la Comisión Nacional del Agua
(Conagua).>> Full text


Deutscher Wetterdienst now on Facebook and YouTube
Posted 1 April 2011

Weather and climate are much-discussed topics in the social media world

From 01 April 2011, the Deutscher Wetterdienst (DWD) has its own page on Facebook and a channel on YouTube. Interested users of these social networking sites will find there the latest news and background information about weather and climate as well as a multitude of weather- or climate-related pictures and videos. The DWD's online profiles are available at and

"Social networking offers us a much quicker and more direct way of coming into contact with private citizens to discuss weather and climate issues. This will clearly change our public relations and communication with the public," comments Uwe Kirsche, Head of the DWD's Press and Public Relations Division, this new information channel of Germany's national meteorological service. "Through these networks, we can now publish texts, pictures and videos for direct dialogue with the people about our work and interesting issues relating to climate and weather.” >> Full text

Bureau of Meteorology of Australia: La Niña weakens as Pacific warms
Posted 30 March 2011

The tropical Pacific Ocean warmed only slightly over the last fortnight, with temperatures continuing to approach their normal values for this time of year. The recent warming in the Pacific Ocean is consistent with the life cycle of past La Niña events, which tend to decline during the southern hemisphere’s autumn. All available climate models suggest further weakening of the La Niña over the coming months, with a return to neutral conditions likely by the southern hemisphere winter.

Contrasting with the ocean, atmospheric indicators of the La Niña including trade winds, cloudiness and the Southern Oscillation Index (SOI) have shown little trend and remain consistent with a well developed La Niña event. These atmospheric indicators are expected to return to neutral over the coming months in response to changes in the ocean.>> Full text

NOAA: Natural Variability Main Culprit of Deadly Russian Heat Wave That Killed Thousands
Posted 14 March 2011

The deadly Russian heat wave of 2010 was due to a natural atmospheric phenomenon often associated with weather extremes, according to a new NOAA study. And while the scientists could not attribute the intensity of this particular heat wave to climate change, they found that extreme heat waves are likely to become increasingly frequent in the region in coming decades.

The research team drew from scientific observations and computer climate models to evaluate the possible roles of natural and human-caused climate influences on the severity of the heat wave. The study was accepted for publication in Geophysical Research Letters, a publication of the American Geophysical Union.>> Full Text

Bureau of Meteorology of Australia: La Niña continues to weaken in tropical Pacific
Posted 2 March 2011

The La Niña event in the Pacific Ocean continues to weaken after reaching peak intensity in early January. Pacific Ocean temperatures along the equator, particularly those below the surface, have warmed over the past month. This warming has markedly reduced the strength and volume of the cool water that has been present during the previous nine months. Current observations in the Pacific Ocean are consistent with the breakdown phase of La Niña events.>>Full text

Inspector General’s Review of Stolen Emails Confirms No Evidence of Wrong-Doing by NOAA Climate Scientists
Posted 2 March 2011

At the request of U.S. Sen. Inhofe, the Department of Commerce Inspector General conducted an independent review of the emails stolen in November 2009 from the Climatic Research Unit (CRU) at the University of East Anglia in Norwich, England, and found no evidence of impropriety or reason to doubt NOAA’s handling of its climate data. The Inspector General was asked to look into how NOAA reacted to the leak and to determine if there was evidence of improper manipulation of data, failure to adhere to appropriate peer review procedures, or failure to comply with Information Quality Act and Freedom of Information Act guidelines.“We welcome the Inspector General’s report, which is the latest independent analysis to clear climate scientists of allegations of mishandling of climate information,” said Mary Glackin, NOAA’s deputy under secretary for operations. “None of the investigations have found any evidence to question the ethics of our scientists or raise doubts about NOAA’s understanding of climate change science.”>>Full text

Meteorological departments brace for large-scale rainfall in China
Posted 25 February 2011

Affected by the cold air, in this morning, Xinjiang and Northeast China saw a sharp temperature drop by 15 to 19 degrees Celsius. At the same time most parts of central and eastern China were overcast. In the next three days snowfall will cover the areas ranging from Inner Mongolia to South of the Yangtze.

In the next three days there will be rainfall affecting most parts of central and eastern China with isolated torrential rain. The drought in northern China is likely to ease obviously.>> Full text 

Chinese Meteorological Association provides meteorological service for citizen evacuation from Libya
Posted 25 February 2011

At 14:25 on Feb. 24, the special meteorological service forecast product was sent to the General Office of the State Council, State Asset Regulatory Commission, Ministry of Foreign Affairs, Ministry of Commerce and other sectors to provide service for the evacuation of Chinese citizens from Libya. According to the forecast of Central Meteorological Office, in the next three days there will be mostly cloudy in Libya, Tunisia, and Egypt. However, there will be strong wind in sea waters of Benghazi port of Libya. Preventive measures should be taken for marine gale.

Recently, the security situation in Libya has been aggravated. There are 30 thousand Chinese citizens waiting for evacuation. The central government responds quickly to this urgent need and sends chartered commercial aircrafts and ships to collect Chinese nationals at the first time. According to the Xinhua News Agency, about 4,600 Chinese had left Libya by Feb. 24 in China's largest-ever evacuation.>> Full text

Government of Canada Improves Weather and Marine Services in the Arctic
Posted 23 February 2011

The Harper Government is demonstrating its strong commitment to Canada's North by investing in meteorological and navigational warning services in the Arctic. This will provide enhanced accessibility to weather data and navigational shipping information for mariners, economic sectors and the general population of the North. Environment Minister, the Honourable Peter Kent, and Fisheries and Oceans Minister, the Honourable Gail Shea, announced the $34.8 million investment. >> Full text


NOAA: Climate Projections Show Human Health Impacts Possible Within 30 Years
Posted 23 February 2011

A panel of scientists speaking at the annual meeting of the American Association for the Advancement of Science (AAAS) unveiled new research and models demonstrating how climate change could increase exposure and risk of human illness originating from ocean, coastal and Great Lakes ecosystems, with some studies projecting impacts to be felt within 30 years.

“With 2010 the wettest year on record and third warmest for sea surface temperatures, NOAA and our partners are working to uncover how a changing climate can affect our health and our prosperity,” said Jane Lubchenco, Ph.D., under secretary of commerce for oceans and atmosphere and NOAA administrator. “These studies and others like it will better equip officials with the necessary information and tools they need to prepare for and prevent risks associated with changing oceans and coasts.” >> Full text

UK Met Office: Emissions contributed to Autumn 2000 flood risk
Posted 23 February 2011

Greenhouse gas emissions due to human activity substantially increased the odds of damaging floods occurring in England and Wales in Autumn 2000 according to new research published in the journal Nature.ukfloodsukfloods

Although the precise magnitude is still uncertain, the researchers found a 2-in-3 chance that the odds were increased by about a factor of two or more.

The study suggests that, although these floods could have occurred in the absence of human influence on climate, greenhouse gas emissions can now be blamed for increasing the odds of floods occurring at that time. >> Full text


Bureau of Meteorology of Australia: La Niña event now passed its peak
Posted 23 February 2011

The La Niña event which has dominated the Australian climate for the past nine months is showing signs of weakening. Pacific Ocean temperatures, most notably below the surface, have warmed, while atmospheric indicators such as the Southern Oscillation Index (SOI), trade winds and cloud patterns have eased from their respective peaks in early January.These observations are consistent with both the life cycle of past La Niña events and long-range climate models, which show the Pacific gradually warming during the southern autumn of 2011. All available climate models suggest further weakening of the La Niña is likely through autumn, with most indicating a return to neutral conditions by winter 2011. >> Full text


Metéo-Suisse: Couche d'ozone, nuage de cendres volcaniques et surveillance climatique - derniers résultats de la recherche
Posted on 19 January 2011

Le programme de Veille atmosphérique globale (VAG) mené sous l'égide de l'Organisation météorologique mondiale (OMM) a abouti ces dernières années à des résultats intéressants. Les mesures effectuées au-dessus de la Suisse montrent une diminution de la tendance à la baisse de la couche d'ozone. L'observation de la vapeur d'eau permet quant à elle de mieux comprendre le système climatique. Les nouveaux réseaux d'observation mesurent les modifications minimes du rayonnement sur la planète - autant d'informations utiles non seulement pour la recherche sur le climat, mais aussi pour le secteur de la santé. Les mesures d'aérosols ont par ailleurs livré des informations cruciales sur le nuage de cendres du volcan islandais Eyjafjallajökull au printemps 2010. Les activités de recherche réalisées par la Suisse dans le cadre du programme VAG sont coordonnées par l'Office fédéral de Météorologie et Climatologie MétéoSuisse. >> Full text

National Oceanic and Atmospheric Administration: 2010 Tied For Warmest Year on Record
Posted on 13 January 2011

According to NOAA scientists, 2010 tied with 2005 as the warmest year of the global surface temperature record, beginning in 1880. This was the 34th consecutive year with global temperatures above the 20th century average. For the contiguous United States alone, the 2010 average annual temperature was above normal, resulting in the 23rd warmest year on record.

This preliminary analysis is prepared by scientists at NOAA’s National Climatic Data Center in Asheville, N.C., and is part of the suite of climate services NOAA provides government, business and community leaders so they can make informed decisions.>> Full text

Annual Australian Climate Statement 2010
Posted on 5 January 2011

Data collected by the Bureau of Meteorology show that the Australian mean rainfall total for 2010 was 690 mm, well above the long-term average of 465 mm. As a result, 2010 was Australia’s wettest year since 2000 and the third-wettest year on record (records commence in 1900).

2010 began with El Niño conditions in the Pacific followed by a rapid transition into La Niña during autumn. From January to May rainfall was generally above average in most areas except the western half of Western Australia and southern Tasmania. By July, La Niña conditions were well established and most areas of Australia experienced very much above average rainfall. The second half of the year (July to December) was the wettest on record for Australia.

However, not all areas were very wet during 2010. Southwest Western Australia had its driest year on record, and Tasmania had near to average rainfall for the year; the result of a dry first six months followed by a relatively wet second six months. >> Full text


Canada's Top Ten Weather Stories for 2010
Posted on 4 January 2011

Environment Canada has selected its top Canadian Weather Stories for 2010. These stories are rated from one to ten based on factors that include the impact they had on Canada and Canadians, the extent of the area affected, economic effects and longevity as a top news story.>> Full text



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