Contra Costa County, CA — Severe Weather & Radar
No active severe-weather warnings for Contra Costa County, CA right now. Live radar is below — set up alerts to get warned the moment one is issued.
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Severe-weather outlook
No severe-weather risk is outlooked for Contra Costa County, CA today.
3-day forecast
Forecast: NOAA National Blend of Models.
When is severe weather most likely near Contra Costa?
Severe thunderstorms and tornadoes are relatively rare in Contra Costa County.
The larger weather threats are winter storm systems bringing damaging winds, heavy rain, and flooding, mainly from late fall through spring.
Based on long-term NOAA / NWS Storm Prediction Center climatology.
In Contra Costa County, CA
Contra Costa County, CA has an estimated 1,200,000 residents, plus 5 hospitals, 30 nursing homes, 287 schools, 20 mobile-home parks, 21 dialysis centers that could be in a storm's path. Atmostorm shows which of them fall inside an active warning polygon.
Emergency-management view: who & what is in the warned path →
Nearby areas
Live radar and active alerts for places near Contra Costa:
Not an official source — always confirm with the National Weather Service at weather.gov. Data aggregated from NWS/SPC. Facility and population figures are decision-support estimates.