Reverse 911 Alerting System

Register your cell phone or email address online with the Reverse 911 alerting systemNEW EMERGENCY NOTIFICATION SYSTEM

Register for AlertSCC to receive important emergency information.

The City of San Jose is participating in a new Countywide Emergency Notification System that will provide timely and lifesaving information to registered residents, no matter their location.

The AlertSCC system can send thousands of text and voice messages within minutes to home and business land line phones using existing 411 and 911 databases. The system cannot reach cell phones, PDA’s, computers, and devices for the hearing impaired, unless those cell phone numbers and e-mail addresses are registered with the system.

Registering takes only a few minutes through a simple online process. Anyone who lives or works in Santa Clara County is encouraged to register their cell phone number and e-mail address by going to Click on “Participating Cities” to register.

The County of Santa Clara purchased the system and is rolling it out to San Jose, Morgan Hill, Mountain View, Saratoga, Cupertino, Santa Clara, Sunnyvale, Milpitas, Gilroy, Campbell, Los Altos, Los Gatos, Monte Sereno, and Los Altos Hills.

  • Residents can register online to add additional cell phones and email addresses to the existing County database of phone numbers by visiting:

AlertSCC  Santa Clara County Emergency Alert SystemWHAT IS ALERTSCC?

AlertSCC is a powerful mass notification system that will be used to send emergency information and instructions to anyone who lives or works in Santa Clara County. AlertSCC will send messages to phone numbers included in the emergency 911 and 411 directory listings. In addition, by registering at you may provide additional contact information to receive messages on other devices.

Your information lifeline in an emergency:

Your ability to receive fast, accurate information can help you survive in an emergency.

AlertSCC can send text or voice messages to home phones, cell phones, personal digital assistants (PDA’s), laptops, desktop computers, and TTY/TDD devices for the hearing impaired. AlertSCC can reach you wherever you are almost immediately to provide information and instructions for a variety of emergency situations, including:

  • Wildfires and subsequent evacuations
  • Shelter, transportation, or supply information following a major disaster
  • Other public safety incidents that immediately affect your neighborhood

Fast, free, and essential:

Registering for AlertSCC is one of the fastest, easiest, and most immediately productive things you can do to better prepare for an emergency. It is the one step you should take today. Registering takes only minutes, the service is free, and AlertSCC connects you to a powerful countywide response network managed by the best-trained, best-equipped emergency services personnel. AlertSCC is specifically designed to help you manage your actions in an emergency. Select your city from the menu to register your contact information (up to three phone numbers, two email addresses, and one SMS text message number).



Disclaimer: AlertSCC is effective and efficient, but you should not rely on it exclusively. This system supplements, rather than replaces, other communication methods used by emergency responders, both in person and through the use of other media. Television, radio and County/city websites will continue to broadcast important announcements as well. AlertSCC communications are dependent upon external providers such as your wireless carrier or e-mail delivery service. County of Santa Clara government cannot guarantee that notifications will be received by the intended recipient. Service costs from your carrier are your responsibility.


OUR MISSION: Create safe places to live, work, and learn through community partnerships. The Department maintains
a commitment to the following values: Integrity, Courage, Excellence, Service, Diversity, Innovation, and Respect.