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Emergency Alert System Event Codes

D = Deprecated Codes U = Unimplemented Codes
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Pearno
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Last updated: April 3, 2026
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First submittedApril 3, 2026
Times taken1
Average score34.1%
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Event Code
 
Answer
Event Level
ADR
 
Administrative Message
Advisory/Statement
AVA
 
Avalanche Watch
Watch
AVW
 
Avalanche Warning
Warning
BHW
U
Biological Hazard Warning
Warning
BLU
 
Blue Alert
Warning
BWW
U
Boil Water Warning
Warning
BZW
 
Blizzard Warning
Warning
CAE
 
Child Abduction Emergency
Advisory/Statement
CDW
 
Civil Danger Warning
Warning
CEM
 
Civil Emergency Message
Warning
CFA
 
Coastal Flood Watch
Watch
CFW
 
Coastal Flood Warning
Warning
CHW
U
Chemical Hazard Warning
Warning
CWW
U
Contaminated Water Warning
Warning
DBA
U
Dam Watch
Watch
DBW
U
Dam Break Warning
Warning
DEW
U
Contagious Disease Warning
Warning
DMO
 
Practice/Demo Warning
Test
DSW
 
Dust Storm Warning
Warning
EAN
 
National Emergency Message
Warning
EAT
D
Emergency Action Termination
Advisory/Statement
EQW
 
Earthquake Warning
Warning
EVA
U
Evacuation Watch
Watch
EVI
 
Evacuation Immediate
Warning
EWW
 
Extreme Wind Warning
Warning
FCW
U
Food Contamination Warning
Warning
FFA
 
Flash Flood Watch
Watch
FFS
 
Flash Flood Statement
Advisory/Statement
FFW
 
Flash Flood Warning
Warning
FLA
 
Flood Watch
Watch
FLS
 
Flood Statement
Advisory/Statement
FLW
 
Flood Warning
Warning
FRW
 
Fire Warning
Warning
FSW
 
Flash Freeze Warning
Warning
FZW
 
Freeze Warning
Warning
HLS
 
Hurricane Local Statement
Advisory/Statement
HMW
 
Hazardous Materials Warning
Warning
HUA
 
Hurricane Watch
Watch
HUW
 
Hurricane Warning
Warning
HWA
 
High Wind Watch
Watch
HWW
 
High Wind Warning
Warning
IBW
U
Iceberg Warning
Warning
IFW
U
Industrial Fire Warning
Warning
LAE
 
Local Area Emergency
Advisory/Statement
LEW
 
Law Enforcement Warning
Warning
LSW
U
Landslide Warning
Warning
MEP
 
Missing And Endangered Persons
Advisory/Statement
NAT
 
National Audible Test
Test
NIC
 
National Information Center
Advisory/Statement
NMN
 
Network Notification Message
Advisory/Statement
NPT
 
National Periodic Test
Test
NST
 
National Silent Test
Test
NUW
 
Nuclear Power Plant Warning
Warning
POS
U
Power Outage Advisory
Advisory/Statement
RHW
 
Radiological Hazard Warning
Warning
RMT
 
Required Monthly Test
Test
RWT
 
Required Weekly Test
Test
SMW
 
Special Marine Warning
Warning
SPS
 
Special Weather Statement
Advisory/Statement
SPW
 
Shelter-In-Place Warning
Warning
SQW
 
Snow Squall Warning
Warning
SSA
 
Storm Surge Watch
Watch
SSW
 
Storm Surge Warning
Warning
SVA
 
Severe Thunderstorm Watch
Watch
SVR
 
Severe Thunderstorm Warning
Warning
SVS
 
Severe Weather Statement
Advisory/Statement
TOA
 
Tornado Watch
Watch
TOE
 
911 Telephone Outage Emergency
Advisory/Statement
TOR
 
Tornado Warning
Warning
TRA
 
Tropical Storm Watch
Watch
TRW
 
Tropical Storm Warning
Warning
TSA
 
Tsunami Watch
Watch
TSW
 
Tsunami Warning
Warning
VOW
 
Volcano Warning
Warning
WFA
U
Wildfire Watch
Watch
WFW
U
Wildfire Warning
Warning
WSA
 
Winter Storm Watch
Watch
WSW
 
Winter Storm Warning
Warning
??A
 
Unrecognized Watch
Watch
??E
 
Unrecognized Emergency
Advisory/Statement
??S
 
Unrecognized Statement
Advisory/Statement
??W
 
Unrecognized Warning
Warning
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