Emergency Alert System in the United States
E95214
The Emergency Alert System in the United States is a national public warning system that enables authorities to quickly broadcast urgent alerts over television, radio, and other communication channels during emergencies such as natural disasters, threats to public safety, or national crises.
Aliases (4)
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
emergency communication system
→
public warning system → |
| abbreviation |
EAS
→
|
| administeredBy |
Federal Emergency Management Agency
NERFINISHED
→
|
| authority |
President of the United States
→
|
| canOverride |
regular programming on participating stations
→
|
| canTransmit |
Presidential Emergency Action Messages
→
|
| componentOf |
Integrated Public Alert and Warning System
→
|
| country |
United States
→
|
| dataFormat |
audio frequency-shift keying
→
|
| designedFor |
rapid dissemination of life-saving information
→
|
| fullyImplemented |
late 1990s
→
|
| geographicTargeting |
county-level targeting via SAME codes
→
|
| includesFeature |
attention signal
→
monthly tests → required monthly test codes → weekly tests → |
| introduced |
1990s
→
|
| legalBasis |
Communications Act of 1934
NERFINISHED
→
Federal Communications Commission rules → War Powers Act authorities → |
| medium |
AM radio
→
FM radio → cable television systems → satellite radio → satellite television → television → wireless cable systems → |
| operatedBy |
Federal Communications Commission
NERFINISHED
→
Federal Emergency Management Agency → National Weather Service → |
| precededBy |
Emergency Broadcast System
NERFINISHED
→
|
| purpose |
dissemination of emergency information to the public
→
local and state emergency alerts → national-level presidential alerts → weather-related emergency alerts → |
| regulatedBy |
Federal Communications Commission
NERFINISHED
→
|
| relatedSystem |
NOAA Weather Radio
→
Wireless Emergency Alerts → |
| replaced |
Emergency Broadcast System
→
|
| requiresParticipationFrom |
broadcast television stations
→
cable television providers → radio broadcast stations → satellite television providers → wireless cable providers → |
| scope |
local
→
national → state → |
| signalType |
dual-tone attention signal
→
|
| testMessagePhrase |
This is a test of the Emergency Alert System
→
|
| typicalEventType |
AMBER Alerts (via EAS in some jurisdictions)
→
civil emergencies → natural disasters → severe weather emergencies → |
| usesProtocol |
Specific Area Message Encoding
→
|
Referenced by (8)
| Subject (surface form when different) | Predicate |
|---|---|
|
United States emergency management system
("Emergency Alert System")
→
|
hasComponent |
|
NWR
("Emergency Alert System")
→
|
integratedWith |
|
Federal Emergency Management Agency
("Emergency Alert System (in coordination with other agencies)")
→
|
oversees |
|
AMBER Alert
→
|
partOf |
|
AMBER Alert
("Emergency Alert System")
→
|
relatedTo |
|
Emergency Alert System (United States)
("Emergency Broadcast System")
→
|
replaced |
|
Federal Communications Commission
→
|
supervises |
|
Specific Area Message Encoding
("Emergency Alert System")
→
|
usedIn |