In weather emergencies, warnings can save lives. Beginning in June 2012, emergency officials will have a new way to send warnings directly to cell phones in affected areas – Wireless Emergency Alerts (WEAs).
Wireless Emergency Alerts are short messages may look like a text message, but unlike texts, these warnings will be broadcast to all phones within range of designated cell towers through the Commercial Mobile Alert System (CMAS). These alerts will tell you the type of warning, the affected area, and the duration. You will need to turn to other sources like television or radio to get more detailed information about what is happening and what actions you should take.
For more information click the link: NWS Weather Ready Nation WEA Information Page