San Mateo Prepares for El Niño and King Tides
San Mateo Prepares for El Niño and King Tides
US · Published Oct 28, 2026
• San Mateo County is gearing up for a potentially challenging winter season as NOAA predicts a strong to very strong El Niño event, with an 83% chance of being the strongest since
• This raises the likelihood of wetter and stormier conditions. Additionally, King Tides are expected to impact the region, with specific dates and tide times available on the California Coastal Commission website. The county is actively tracking storms in collaboration with UC San Diego's Scripps CW3E and the National Weather Service, while coordinating with local cities and emergency response partners. Residents are encouraged to prepare by utilizing sandbag stations and reviewing household emergency plans.

Impact & Risks

The combination of El Niño and King Tides poses risks of flooding and storm-related damage across San Mateo County. Floodwaters can be dangerous, with just six inches capable of knocking a person off their feet and 12 inches able to carry away most vehicles. Coastal areas and low-lying regions are particularly vulnerable. Residents should remain vigilant and take precautions to minimize risks to property and personal safety.

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