El Niño/La Niña Update (August 2009) Publication 19 August 2009 Adobe Stock / Microgen El Niño conditions have become established over the tropical Pacific, and it is very likely that these will continue at least through the remainder of 2009 and probably into the first quarter of 2010. The ocean surface and subsurface in the central and eastern Equatorial Pacific has been substantially warmer than normal during June and July, supporting the development of an El Niño event. View Report Share: Other editions Publication 01 April 2023 El Niño/La Niña Update (April 2023) Publication 01 November 2022 El Niño/La Niña Update (November 2022) Publication 01 August 2022 El Niño/La Niña Update (August 2022) View all editions