Alert LA County

Alert LA County is an emergency mass notification system established by Los Angeles County to contact County residents and businesses via recorded phone messages, text messages or e-mail messages in case of emergencies. The system will be used by the County’s Emergency Operations Center to notify residents and businesses of emergencies or critical situations and provide information regarding necessary actions, such as evacuations. The system uses the telephone companies’ 911 database and is able to contact land-line telephone numbers, whether listed or unlisted.  If the call is picked up by an answering machine, the system will leave a recorded message. If the number called is busy or does not answer, the system will redial the number in an attempt to deliver the message. The system is also TTY/TDD compatible.

Alert LA County uses 911 databases; therefore, only land-line numbers are automatically included in the system. If you would like to be notified at your cellular phone or receive an e-mail notification, you must register the cellular phone number and/or e-mail address.  Please note that each cellular number and/or e-mail address can only be associated with one street address in the system. The registered telephone number and e-mail address will be contacted only when the street address it is associated with is impacted by a disaster or emergency.

Listed and unlisted land line telephone numbers are already included in the database and do not need to be registered.

For more information about Alert LA County or to register your cellular phone number or e-mail address please visit their website at