Community Warning System
    Mt. Diablo Vegetation Fire.

    Automated Alerts
    The Community Warning System (CWS) issues alerts when available about situations in Contra Costa County that pose an imminent threat to life or health. The CWS is operated by the Office of the Sheriff in partnership with the county's Department of Health Services and its industry and public safety partners such as the San Ramon Valley Fire Protection District.

    Alerts are sent as text, voice or email to registered users. Participants receive information for specific zip codes (selected during the registration process). To register, update, or deregister, visit the Contra Costa County Community Warning System website. Users can also receive text headlines via Twitter by following CoCoCWS.

    If you have problems or questions about this service you can contact the Community Warning System by email at or by phone at (925) 313-9622.

    Radio and Television Coverage
    Radio and television broadcasts are usually the best source of ongoing information about emergencies. In the San Ramon Valley, radio stations KCBS (740 AM) and KGO (810 AM) are excellent starting points along with San Francisco Bay Area television stations KTVU (FOX 2), KNTV (NBC 3), KRON (IND 4), KPIX (CBS 5), KGO (ABC 7).

    1500 Bollinger Canyon Road, San Ramon CA 94583
    (925) 838-6600 |