The County of San Diego has launched an El Niño 2026 Information Hub on Alert San Diego; the county said the site centralizes preparedness guidance, hazard information and county tools in one place.

County officials said forecasts point to heavier rainfall, more frequent storms, coastal erosion and increased flood concerns this fall and winter; the county quoted experts saying this could be one of the strongest El Niño seasons on record.

The county said scientists already see early signs of El Niño building in the Pacific and that ocean temperatures continue to rise above historic norms. The County Weather Center and the ALERT flood‑warning network are tracking real‑time rainfall and stream levels to guide field operations and support community safety.

The hub links to practical tools residents can use now, including emergency alert registration, sandbag locations, real‑time weather information from the National Weather Service, the Tell Us Now reporting app and mapping tools that show neighborhood‑level hazards, the county said.

County departments are preparing by clearing storm drains, reinforcing infrastructure and increasing emergency response staffing, the county said. Officials urged residents to use the new hub to stay informed, plan ahead and reduce risk before storms arrive.

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County of San Diego

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