Contra Costa County, California: tornado and severe weather warnings
Nothing is in effect for Contra Costa County as of 1:49 PM PDT: no warnings, watches or advisories. This page checks the National Weather Service every minute.
Open the live map on Contra Costa County Get a message when a warning reaches your address
The map shows radar, every warning shape, and the path and arrival time of each storm cell headed toward the center of Contra Costa County. Tap your own street on it for times that apply to you.
The last 12 months in Contra Costa County
- 0 tornado warnings
- 0 severe thunderstorm warnings
- 1 flash flood warnings
- 0 tornado watches
- 0 severe thunderstorm watches
No tornado warning has included Contra Costa County in the last 12 months.
| Date | Issued | Type | Office | Product |
|---|---|---|---|---|
| Dec 25, 2025 | 3:01 AM PST | Flash flood warning | MTR | text |
A warning counts here if the Weather Service listed Contra Costa County in it, even if the warned area covered only part of the county.
Nearby
- Alameda County, CA
- Solano County, CA
- San Joaquin County, CA
- San Mateo County, CA
- Marin County, CA
- Napa County, CA
- Sacramento County, CA
- Santa Clara County, CA
- All of California
What the alerts mean
Alerts come from the National Weather Service and refresh every minute. Past warnings come from the Iowa Environmental Mesonet's archive of Weather Service products. During a warning, also listen to local radio, TV or a weather radio.