Reverse 9-1-1 - Be Prepared!To help keep its citizens out of harm’s way, California has begun to implement a proactive alert and warning notification system program also known as "Reverse 911" for each county. These systems can provide you with warnings and information updates on your home phone, email, mobile phone, or text messages.

While many counties have already begun their programs, there are some that are still in the process of getting their systems up and running - so please check back periodically for updates!

To learn about your county’s specific emergency alert plan, please click on the link:

   
     

   
     
Alameda County
 
Madera County
 
San Joaquin County
         
Alpine County
 
Marin County
 
         
Amador County
 
Mariposa County
 
San Mateo County
         
Butte County
   
         
Calaveras County
 
Merced County
 
         
Colusa County
 
Modoc County
 
Santa Cruz County
         
Contra Costa County
 
Mono County
 
Shasta County
         
Del Norte County
   
Sierra County
         
El Dorado County
 
Napa County
 
Siskiyou County
         
Fresno County
 
Nevada County
 
Solano County
         
Glenn County
   
Sonoma County
         
Humboldt County
 
Placer County
 
Stanislaus County
         
 
Plumas County
 
Sutter County
         
Inyo County
   
Tehama County
         
Kern County
 
Sacramento County
 
Trinity County
         
Kings County
 
San Benito County
 
Tulare County
         
Lake County
   
Tuolumne County
         
Lassen County
 
San Diego County
 
         
 
San Francisco County
 
Yolo County
         
 
 
 
 
Yuba County