NOAA gives El Niño an 83% chance of reaching historic strength in late 2026
El Niño strengthened further across the equatorial Pacific in September 2026, and NOAA’s Climate Prediction Center (CPC) said on October 8 that the October–December Relative Oceanic Niño Index (RONI) has an 83% chance of reaching at least +2.5°C (+4.5°F)—a level that would exceed previous El Niño events in its record dating to 1950. The World Meteorological Organization (WMO) separately forecast a Niño-3.4 anomaly of approximately +3.7°C (+6.7°F) for the same period.

