What are Wireless Emergency Alerts?
WEA is a public safety system that allows customers who own certain wireless phones and other enabled mobile devices to receive geographically-targeted, text-like messages alerting them of imminent threats to safety in their area. The technology ensures that emergency alerts will not get stuck in highly congested areas, which can happen with standard mobile voice and texting services. WEA (formerly known as the Commercial Mobile Alert System (CMAS) or Personal Localized Alerting Network (PLAN)) was established pursuant to the Warning, Alert and Response Network (WARN) Act.
WEA enables government officials to target emergency alerts to specific geographic areas – lower Manhattan, for example – through cell towers that broadcast the emergency alerts for reception by WEA-enabled mobile devices.
Wireless companies volunteer to participate in WEA, which is the result of a unique public/private partnership between the FCC, FEMA and the wireless industry to enhance public safety.
How does WEA work?
Pre-authorized national, state or local government authorities may send alerts regarding public safety emergencies, such as evacuation orders or shelter–in-place orders due to severe weather, a terrorist threat or chemical spill, to WEA.
The alerts from authenticated public safety officials are sent through FEMA’s Integrated Public Alert and Warning System (IPAWS) to participating wireless carriers, which then push the alerts from cell towers to mobile devices in the affected area. The alerts appear like text messages on mobile devices.
Who receives the alerts?
Alerts are broadcast only from cell towers whose coverage areas best match the zone of an emergency. Phones that are using the cell towers in the alert zone will receive the WEA. This means that if an alert is sent to a zone in New York, all WEA-capable phones in the alert zone can receive the WEA, even if they are phones that are roaming or visiting from another state. In other words, a customer visiting from Chicago would receive alerts in New York if they have a WEA-enabled mobile device and their phone is using a cell tower 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?
Alerts from WEA cover only critical emergency situations. Consumers will receive only three types of alerts:
1. Alerts issued by the President
2. Alerts involving imminent threats to safety or life
3. Amber Alerts
Participating carriers may allow subscribers to block all but Presidential alerts.
What do consumers experience when they receive a WEA?
A WEA 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. This technology ensures that emergency alerts will not get stuck in highly congested areas, which can happen with standard mobile voice and texting services.
Do consumers need a new phone or a smart phone to receive alerts?
Some phones may require only software upgrades to receive alerts, while in other cases a subscriber may need to purchase a new WEA-capable device. Consumers should check with their wireless carrier regarding the availability of WEA-capable handsets.
For more information from the Federal Communications Commission: http://transition.fcc.gov/cgb/consumerfacts/wea.pdf
For more information from the National Weather Service: https://www.weather.gov/media/wrn/WEA_flyer_final.pdf