El Niño is strengthening. What the new outlook can tell you.
WMO’s September 3 update says El Niño is established and highly likely to persist through February 2027.
A seasonal outlook describes shifting probabilities over months and broad regions. It is different from tomorrow’s local forecast. Treating the two as interchangeable can create unnecessary alarm in one place and false reassurance in another. The useful next step is to connect the global signal with local official information.
Find the forecast closest to home
Use your national meteorological service for regional outlooks and official warnings. Check when a bulletin was issued and the period it covers. Save a direct link so that a recycled screenshot does not become your main source during changing conditions.
Plan around needs, not certainty
Review how a household, school or workplace receives urgent alerts and communicates a closure. Ask who may need assistance accessing those messages. A plan can be useful even when the exact weather outcome remains uncertain; it should be updated with local guidance as conditions develop.
WMO · September 3 El Niño update ↗
The opening news summary is attributed to this source. The explanation and reader checklist are original editorial analysis. Developments after September 7 are not reflected here.