The Wireless Emergency Alerts system is an essential part of America's emergency preparedness. Since its launch in 2012, the WEA system has been used more than 70,000 times to warn the public about dangerous weather, missing children, and other critical situations – all through alerts on compatible cell phones and other mobile devices.

WEA is a public safety system that allows customers who own compatible mobile devices to receive geographically targeted, text-like messages alerting them of imminent threats to safety in their area.

WEA enables government officials to target emergency alerts to specific geographic areas – lower Manhattan in New York, for example.

The Warning, Alert and Response Network (WARN) Act established WEA in 2008 and it became operational in 2012.

Wireless companies volunteer to participate in WEA, which is the result of a unique public/private partnership between the Federal Emergency Management Agency, the FCC, and the United States wireless industry in order to enhance public safety.

FAQs about WEA

• How does WEA work?  

  Authorized national, state, or local government authorities may send alerts regarding public safety emergencies – such as severe weather, missing children, or the need to evacuate– using WEA.

  Authorized public safety officials send WEA alerts through FEMA's Integrated Public Alert and Warning System (IPAWS) to participating wireless carriers, which then push the alerts to compatible mobile devices in the affected area.

• Who receives the alerts?  

  The alerts are broadcast to the geographic area affected by an emergency. This means that if an alert is sent to a zone in New York, WEA-capable mobile devices in that zone can receive the alert, even if they are roaming or visiting from another state. In other words, a customer visiting from Chicago would be able to receive alerts in New York so long as the person has a WEA-enabled mobile device in the alert zone.

• How much do consumers pay to receive WEA?  

  Alerts are free. Customers do not pay to receive WEA.

• Do consumers have to sign up to receive alerts?  

  Consumers do not need to sign up for this service. WEA allows government officials to send emergency alerts to all subscribers with WEA-capable devices if their wireless carrier participates in the program.

• What alerts does WEA deliver?  

  WEA alerts only cover critical emergency situations. Consumers may only receive four types of alerts:

  1. Alerts issued by the President of the United States
  2. Alerts involving imminent threats to safety or life
  3. Amber Alerts about missing children
  4. Alerts conveying recommendations for saving lives and property

  Participating carriers may allow subscribers to block all but Presidential alerts.

• What do consumers experience when they receive a WEA?  

  A WEA alert appears on the screen of the recipient's handset as a text-like message. The alert is accompanied by a unique attention signal and vibration, which is particularly helpful to people with hearing or vision-related disabilities.

• Are consumers able to receive WEAs on a prepaid phone?  

  Yes. Consumers with prepaid phones can receive WEAs as long as their provider has decided to participate in WEA and the customer has a WEA-enabled device. These consumers receive the alerts just as customers with postpaid, monthly service do.

• Does WEA track my location?  

  No. WEA is not designed to – and does not – track the location of anyone receiving a WEA alert.

• Are WEAs text messages?  

  No. Many providers have chosen to transmit WEAs using a technology that is separate and different from voice calls and SMS text messages.

• Do consumers need a new phone or a smart phone to receive alerts?  

  Consumers should check with their wireless carrier regarding the availability of WEA-capable handsets. In addition, CTIA, a wireless trade association, publishes lists of WEA-capable phones offered by the largest wireless providers.

• Is WEA available everywhere?  

  Participation in WEA by wireless carriers is widespread but voluntary. Some carriers may offer WEA over all or parts of their service areas or over all or only some of their wireless devices. Other carriers may not offer WEA at all. Even if you have WEA-enabled device, you would not receive WEAs in a service area where the provider is not offering WEA or if your device is roaming on a provider network that does not support the WEA service. Consumers should check with their wireless carriers to determine the extent to which they are offering WEA.

• Can consumers block WEAs?  

  Partially. Participating wireless carriers may offer subscribers with WEA-capable handsets the ability to block alerts involving imminent threats to safety of life and/or AMBER Alerts. Consumers cannot block emergency alerts issued by the President.

• Why can't consumers block WEAs issued by the President?  

  In passing the WARN Act, Congress allowed participating wireless carriers to offer subscribers the capability to block all WEAs except those issued by the President.

• How will subscribers know if their carrier offers WEA?  

  The FCC requires all wireless carriers that do not participate in WEA to notify customers. Consumers should check with their wireless carriers to determine the extent to which they are offering WEA.

• My friend just received a WEA over her cell phone, but I did not. We are in the same location. Why didn't I receive a WEA?  

  In order to receive a WEA message, your handset must be WEA-capable, switched on, and in the vicinity of and receiving service from a cell tower of a wireless carrier that participates in WEA.

  Some participating carriers may offer WEA on some, but not all, of their mobile devices. Consumers should check with their wireless carriers to find out if their cell phone is WEA-capable.

• How geographically precise is WEA?  

  WEA geographic precision is continuously improving. When the WEA program launched, participating wireless providers were generally required to send the alerts to a geographic area no larger than the county or counties affected by the emergency. Next, beginning in 2017, participating wireless providers were required to transmit alerts to a geographic area that best approximated the area affected by the emergency, even if it was smaller than a county. Now, as of December 2019, participating wireless providers must geographically target alerts to technologically compatible phones even more: they must deliver the alerts to the area specified by the alert originator with no more than a 1/10 of a mile overshoot.

  This "enhanced geotargeting" relies on new smartphone technology and will be increasingly available as consumers upgrade their devices. CTIA, a U.S. wireless association, estimates that 34 percent of consumers' smartphones supported this enhancement in 2021, an increase from about 18 percent the prior year. WEA-compatible phones that do not support enhanced geotargeting will still receive alerts based on the 2017 geographic area requirements.

• What is the FCC's role in WEA?  

  The WARN Act directed the FCC to adopt technical and operational requirements for WEA service. Wireless carriers that participate in WEA must adhere to the FCC’s WEA rules.

• Does the FCC send alerts?  

  No, the FCC does not send alerts. WEA alert originators include other federal agencies (such as the National Weather Service) and state and local government authorities. Alerts from authenticated public safety officials are sent through FEMA's IPAWS system to participating wireless carriers.

• Who do I contact with questions about how WEA works on my wireless device?  

  For questions about how WEA works on specific devices, check with your wireless provider. For example, the method to turn optional WEA alerts on and off may vary. (The FCC recommends keeping these potentially life-saving alerts on.)

• How do I know if my wireless phone or mobile device can receive WEA messages?  

  Wireless service customers should check with their wireless service provider to find out if their cell phone or mobile device is WEA-capable.  Not all wireless service providers offer WEA, and some participating wireless service providers may offer WEA on some, but not all, of their mobile devices, and in some, but not all, of their service areas.

• Will I receive an alert during a WEA test?  

  Usually not. When public safety officials test Wireless Emergency Alerts, the tests are usually designed to display the test message on your phone only if you have taken action to receive test messages. This enables officials to test the system without disturbing the public, but most consumers have the option to opt in to receive WEA test messages (en Español) if they wish.

Enhanced Wireless Emergency Alerts Available for COVID-19 Pandemic

The Public Safety and Homeland Security Bureau has reminded authorized alert originators that the Wireless Emergency Alert system is available as a tool during the coronavirus COVID-19 pandemic. Learn more

Accessibility and WEA

Information on the Accessibility of Wireless Emergency Alerts to People with Disabilities

Printable Version

Wireless Emergency Alerts (WEA) Guide (pdf)

More information

Background on WEA Policy