California Wireless Emergency Alert Program

California Wireless Emergency Alert Program are government-issued safety messages that include AMBER Alerts, emergency alerts – such as man-made or natural disasters, and Presidential alerts. 
 Wireless Emergency Alerts are part of the FCC’s CMAS program: 
 
 http://transition.fcc.gov/pshs/services/cmas.html 	 http://transition.fcc.gov/pshs/services/eas/ 	 http://www.fema.gov/wireless-emergency-alerts 	 http://www.amberalert.gov/wireless.htm 
 
 See also: 
 http://blogs.att.net/consumerblog/story/a7790136