Emergency Alert and Notification
The primary tool to notify the public is an Outdoor Warning
Siren System placed at various locations in the 10-mile Emergency Planning Zone. Upon activation, the sirens
will sound for approximately three minutes with a steady, high-pitched
sound. Residents should turn on radios or televisions to receive
Emergency Alert System (EAS) warning messages. County officials use the Emergency Alert System to provide emergency information and instructions. EAS stations are listed below:
- KTAR 620 (AM) and 92.3 (FM)
- KMVP 98.7 (FM)
- Phoenix National Weather Service forecast office transmits via the
National Oceanic and Atmospheric Administration (NOAA) Weather Radio
South Mountain transmitter, KEC 94 (FM) on 162.55 Mhz.
All radio and television stations serving the affected area(s) will
be asked to broadcast emergency information as a public service.
Should a siren(s) fail the Maricopa
County Sheriff's Office will provide warning by telephone,
door to-door contact or loudspeakers mounted on patrol or other
vehicles as necessary.