October 24, 2026 CFSI Staff

California Prepares for Potentially Severe El Niño Winter and Coastal Flooding

San Francisco Mayor Daniel Lurie declared a local emergency on October 23 to accelerate preparations for a potentially severe El Niño winter that could bring heavy rainfall, strong winds, and coastal flooding to California. The declaration allows city departments to expedite purchases of critical supplies, including pumps, generators, and flood barriers, and strengthens coordination among agencies ahead of the winter storm season.

Officials are particularly concerned about the combination of intense rainfall and unusually high coastal tides, which could increase flooding risks along the waterfront and disrupt transportation and essential infrastructure. San Francisco is preparing temporary flood barriers, improving storm-drain maintenance, and assessing vulnerable infrastructure. The state has also declared an emergency as communities prepare for potentially significant weather impacts. The timing and severity of this winter’s conditions remain uncertain.

Severe storms and coastal flooding can affect commercial fishing ports, seafood processing facilities, cold-storage operations, transportation routes, and waterfront infrastructure. Flooding and power interruptions may disrupt seafood handling, refrigeration, deliveries, and access to docks and processing facilities.

California seafood businesses may want to review storm preparedness plans, confirm backup power and refrigeration contingencies, protect equipment and inventory in flood-prone areas, and verify emergency communications and supply-chain arrangements. Businesses operating along the coast should also monitor local flood advisories and high-tide forecasts as the winter season approaches.

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