San Mateo County – Disasters Information and Emergency Alerts

Heatwave Information:

Visit the San Mateo County website for cooling center locations and information

Visit the National Weather Service to prepare for summer heat.

Other County Updates:

For information on active incidents and disaster preparedness information visit the Department of Emergency Management page.

San Mateo County Emergency Alert System provides the most recent information on evacuation warnings, emergency notifications, and all other communications shared with the public. To sign up to receive emergency alerts visit SMC Alert.