Overview
- The U.S. Climate Prediction Center reported Thursday that there is a greater than 90% chance of a “very strong” El Niño in fall–winter 2026–27 and a 69% chance the three‑month peak will reach record levels dating to 1950.
- Forecasters point to extraordinary ocean measurements, including sea‑surface anomalies more than 2°C above normal in parts of the eastern equatorial Pacific and upper‑ocean heat up to 10°C above normal at depth.
- Models and historic behavior indicate the event will tilt seasonal weather odds toward wetter winters for parts of the southern United States and southern South America, drier conditions across Australia, India and northern South America, and shifted tropical cyclone activity with a calmer Atlantic but a busier eastern and central Pacific.
- Practical effects are already appearing and being planned for: the Panama Canal has tightened vessel draft limits to conserve water, agencies and militaries are mobilizing for flood or drought response, and the World Food Programme warns the event could push tens of millions more people into acute food insecurity.
- Scientists stress that strong El Niño raises the odds of familiar impacts but does not guarantee them, so officials are urged to prepare now for higher flood, drought, crop and shipping risks while monitoring atmospheric responses that will determine local outcomes.