California Braces for Major Coastal Surge as Kelvin Wave and El Niño Approach

El Niño and a powerful Kelvin wave could flood California coasts, with experts warning of rising tides and extreme weather in 2024.

Editorial Desk

October 1, 2026 One Min Read

POLICY WIRE — San Francisco, United States — A powerful energy wave is set to hit the California coast this October, potentially raising sea levels by up to a foot and increasing risks for coastal communities and natural habitats.

The phenomenon, known as a Kelvin wave, occurs due to sudden shifts in wind patterns and can move warm ocean water across vast distances. Experts say this particular wave is being fueled by an intensifying super El Niño event, which is expected to bring more severe weather conditions throughout the U.S. into next year.

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According to NASA, past El Niño cycles have caused West Coast water levels to rise by over 7.9 inches. This year’s combination of El Niño, seasonal king tides, and long-term climate change has scientists sounding the alarm. The triple threat of these factors is prompting officials to prepare for increased flooding and storm activity, especially during the winter months.

Reporting by Policy-Wire (PW)

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