Alert

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When there is an alert, we will post information about it here.
 

 A green light means no current alerts:



 A yellow light means an alert like a road closure:



 A red light means a serious emergency:


 

If you haven't yet done so, please sign up to receive emergency alerts through the San Mateo County Alert System. Once signed up, you'll receive emergency notifications through e-mail and/or your mobile device via a text message.