***Check this section for CWS Alerts issued***. Generally, if no items are displayed CWS has not issued any alerts or tests, or you may need to refresh your browser. If you have any questions, please refer to our FAQs Page or contact CWS through our Feedback Page.
WHAT DOES THE CWS ALERT FOR?
CWS can alert residents and businesses within Contra Costa County that are impacted by or are in danger of being impacted by an emergency.
The CWS message will include basic information about the incident and what specific protective actions (shelter in place, lockdown, evacuate, avoid the area, etc.) are necessary to protect life and health.
CWS is generally not used for traffic notifications or other non-life-threatening incidents.
Have feedback or a question for us? Visit our Feedback Page and send us a message!
CONTACT US
COMMUNITY WARNING SYSTEM
Contra Costa County Office of the Sheriff
Emergency Services Division
By phone: 925-655-0111
By e-mail: cws-staff@so.cccounty.us
By mail: 1850 Muir Road, Martinez, CA 94553
