California Braces for Potentially “Very Strong” El Niño
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California Braces for Potentially Historic El Niño This Winter
- Federal agencies forecast a 63% chance of a "very strong" El Niño by November 2026 to January 2027, which could rank among the largest events since 1950.
- This powerful El Niño is expected to bring increased precipitation to Southern California, along with risks of coastal flooding, mudslides, and elevated sea levels.
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California is preparing for a potentially historic El Niño event, with federal climate experts forecasting a 63% chance that it will reach “very strong” intensity between November 2026 and January 2027. This level of intensity could place it among the most significant El Niño events recorded since 1950.
El Niño, a natural climate phenomenon characterized by warmer ocean water in the equatorial Pacific, influences global weather patterns. For California, a strong El Niño typically means a wetter winter, particularly for the southern parts of the state. Forecasters anticipate increased precipitation, which could lead to a higher risk of flooding, mudslides, and significant snow events in the Sierra Nevada. Coastal areas are also vulnerable, with predictions of larger waves, coastal flooding, and temporarily elevated sea levels, potentially rising by six to ten inches.
While a powerful El Niño generally increases the odds of a wet winter for California, experts emphasize that atmospheric outcomes are not entirely guaranteed, and the exact timing and intensity of storms remain subject to ongoing monitoring. However, the rapid development of this El Niño and its projected strength suggest that California should prepare for a winter that could bring substantial weather impacts.