Emergency Mobile Alert

About Emergency Mobile Alert

The Wireless Emergency Alert System is a nationwide, free, public safety service. It allows you to receive weather, missing person, and other urgent alerts on your mobile device.

WEAs are delivered to WEA-capable phones within a defined geographic area, and are only sent when there is a significant threat of life, health or property. WEAs are broadcast from cell towers, primarily using cell broadcast technology, to every compatible WEA-capable phone in the targeted area.

When you receive an alert, it will look like a text message and may have a special tone or vibration that is repeated twice. It will usually include the type of alert, any action you should take and the agency issuing the alert. The length of the alert will vary from 360 characters on 4G LTE networks and beyond, to 90 characters on 3G and earlier network types.

You can opt out of receiving most WEAs, including Presidential Alerts, and you can change how they appear on your device. You can also choose to turn off tests of WEAs, which are used to assess the ability of state and local officials to send WEAs in real-time.





The WEA system is made up of a partnership between FEMA, the Federal Communications Commission and wireless providers. lone worker alarm It's a voluntary program that allows you to stay informed when you're in danger and helps America build a Weather-Ready Nation.