The Community Warning System (CWS) is the all-hazard public warning notification system for Contra Costa County.
Joined April 2009
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25 Photos and videos
23 Nov 2025
Concord PD: Lockdown due to Law Enforcement Activity in CONCORD. More at CWSAlerts.com
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29 Jul 2025
All Clear for Public Health Advisory in parts of Richmond & San Pablo. CWSAlerts.com.
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29 Jul 2025
Public Health Advisory for parts of Richmond & San Pablo. Info at CWSAlerts.com.
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21 Jul 2025
ALL CLEAR for Lockdown due to Law Enforcement Activity in DANVILLE. More info CWSAlerts.com
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21 Jul 2025
Lockdown due to Law Enforcement Activity in DANVILLE on ST NORBURT DRIVE. More info CWSAlerts.com
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16 Jul 2025
ALL CLEAR for Public Health Advisory in EAST COUNTY due to SMOKE from FIRE.CWSAlerts.com.
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16 Jul 2025
Public Health Advisory OAKLEY, BRENTWOOD, BYRON, DISCOVERY BAY due to SMOKE from FIRE.CWSAlerts.com.
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23 Jun 2025
ALL CLEAR for the evacuation warning in Diablo due to fire. More info at CWSAlerts.com This is a message from the Contra [ Msg 1 of 3 ]
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