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WMO No. 9 - WEATHER REPORTING
VOLUME C1 - CATALOGUE OF METEOROLOGICAL BULLLETINS
Part 1 - Observational Data AND Part 2 - Grid and Grib Bulletins
Semi annual updates: File Naming Record Format File Transfer
Advanced Notifications: File Naming Record Format File Transfer
TABLE 1 - SEMI ANNUAL FILES - RECORD FORMAT

 

No. Field Name Type Width Description
1 Region Numeric 1
WMO Regions:
1 Region I 4 Region IV 7 Antarctic
2 Region II 5 Region V    
3 Region III 6 Region VI    
2 RTH Character Variable Regional Telecommunication Hub whose zone of responsibility corresponds to the bulletin.
3 Country Character Variable Country where centre is located.
4 Centre Character Variable Centre (usually the NMC) who originates the bulletin or controls the originator of the bulletin.
5 Date Character 10 Date when record becomes effective. day/month/year (e.g. 05/12/1998 for 5th December 1998).
6 Category Character 1 A= Additional data/products; E= Essential data/products; O= Other data/products.
7 TTAAii Character 6 Abbreviated heading of the bulletin (a):
  • TT = standard data designators (b)
  • AA = Geographical designator (b)

(a) See WMO Publication 386: Manual on the GTS, Att. II-5, Vol I, Pt II, para 2.3.2 for full details of abbreviated headings.
(b) See Attachment II-5 of the above-mentioned publication WMO No. 386 for WMO standard data designators ("TT....") and geographical designators ("..AA..").

8 CCCC Character 4 International four-letter location indicator, used in the abbreviated heading (see Annex I)
9 CodeForm Character Variable FM code form – see WMO No 306 – Manual on Codes eg: FM 51 – XII; PLAIN LANGUAGE; Blank
10 TimeGroup Character Variable Time(s) in UTC (= "GG"):

For bulletins containing meteorological reports: The standard time of observation, in UTC; For aerodrome, route and area (aeronautical) forecasts: The hour (in UTC) during which the transmission is made (eg 15 is shown if the transmission time is 15:30)

For other forecasts and analyses: The standard time, in UTC, of the observation on which the forecast or analysis is based.

For other messages: The time of issuing, in UTC as GG in YYGGgg group of the abbreviated heading. Day of month for the bulletin issued on a fixed day every month.

Other comment on issuance of a bulletin could be inserted in "Remarks" field.
11 Content Character Variable Contents of the bulletin: the international station index number or the international four-letter indicator (ICAO location indicators) of stations whose reports are included in the bulletin.

For GRID and GRIB bulletins, area of coverage and grid spacing.
12 Remarks Character Variable Memo field used for any information not described in the preceding fields. In case that contents of a GRID/GRIB bulletin differ from those derived from the abbreviated heading, such information as parameters on actual contents should be inserted in this field.

 

 

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