Wireless Emergency Alerts system
E96748
The Wireless Emergency Alerts system is a nationwide public safety tool in the United States that delivers short, location-based emergency messages—such as severe weather warnings, AMBER alerts, and imminent threat notifications—directly to compatible mobile devices.
Aliases (4)
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
emergency alerting system
→
public warning system → |
| abbreviation |
WEA
→
|
| alertCategory |
National alerts
→
State and local alerts → |
| alertTone |
distinctive attention signal
→
|
| alsoKnownAs |
Commercial Mobile Alert System
→
WEA → |
| authorizedSender |
National Weather Service
→
local public safety agencies → state emergency management agencies → the President of the United States → |
| canBeDisabledByUser |
some alert categories
→
|
| cannotBeDisabledByUser |
Presidential alerts
→
|
| coordinator |
Federal Emergency Management Agency
→
|
| country |
United States
→
|
| deliveryMethod |
mobile devices
→
wireless networks → |
| governedBy |
FCC Part 10 rules
→
|
| initialMessageLengthLimit |
90 characters
→
|
| launched |
April 2012
→
|
| legalBasis |
Warning, Alert, and Response Network Act
→
|
| locationBased |
true
→
|
| messageLengthLimit |
360 characters
→
|
| messageType |
AMBER alerts
→
Presidential alerts → imminent threat alerts → public safety alerts → severe weather warnings → test messages → |
| minimumGeoTargetingAccuracy |
to area not exceeding one-tenth of a mile overshoot when technically feasible
→
|
| operatedBy |
Federal Communications Commission
→
Federal Emergency Management Agency → |
| partOf |
Integrated Public Alert and Warning System
→
|
| purpose |
to provide location-specific safety information
→
to warn the public about emergencies → |
| regulator |
Federal Communications Commission
NERFINISHED
→
|
| requiresSubscription |
false
→
|
| scope |
nationwide
→
|
| startDate |
2012
→
|
| supportsGeoTargeting |
true
→
|
| supportsLanguage |
English
→
Spanish → |
| targetDevice |
WEA-capable mobile phone
→
WEA-capable tablet → |
| usesCellTowerLocation |
true
→
|
| usesGPS |
true
→
|
| usesTechnology |
cell broadcast
→
|
| vibrationPattern |
distinctive vibration cadence
→
|
Referenced by (7)
| Subject (surface form when different) | Predicate |
|---|---|
|
Wireless Emergency Alerts system
("Commercial Mobile Alert System")
→
|
alsoKnownAs |
|
Wireless Emergency Alerts system
("Presidential alerts")
→
|
cannotBeDisabledByUser |
|
AMBER Alert
("America’s Missing: Broadcast Emergency Response")
→
|
fullName |
|
United States emergency management system
("Wireless Emergency Alerts")
→
|
hasComponent |
|
Wireless Emergency Alerts system
("Presidential alerts")
→
|
messageType |
|
Emergency Alert System (United States)
("Wireless Emergency Alerts")
→
|
relatedSystem |
|
Federal Communications Commission
→
|
supervises |