The Wireless Emergency Alert (WEA) system is a public safety warning broadcasts alerts to customers with certain wireless phones and other enabled mobile devices. The notifications are geographically-targeted, text-like messages identifying imminent threats to safety in a specific area. WEA technology ensures that emergency alerts will be delivered, even during cellular use, unlike standard mobile voice and texting services.
The three types of alerts through this system are:
Alerts issued by the President of the United States.
Alerts involving imminent threats to safety of life.
Extreme weather warnings including Tornado and Flash Flood Warnings