California Faces Record Ocean Warmth Amid El Niño
California Faces Record Ocean Warmth Amid El Niño
US · Published Nov 12, 2026
• California's coastal waters have reached unprecedented temperatures, with anomalies exceeding 10°F (5.6°C) above average from Baja California to Sonoma County.
• The Farallon Islands, typically known for cold waters, recorded temperatures over 66°F (18.9°C), shattering all previous records for this time of year.

Impact & Risks

The record-breaking ocean temperatures are contributing to elevated coastal water levels, with anomalies of 12-18 inches above average due to thermal expansion. This increases the risk of coastal flooding, particularly during upcoming king tide events. The warm waters are also altering marine ecosystems, with subtropical species appearing in areas where they are typically absent. Additionally, the elevated sea surface temperatures are expected to enhance the intensity of incoming Pacific storms, potentially leading to heavier rainfall and stronger winds.

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