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Emergency Alert System Event Codes



(also known as NOAA Weather Radio Specific Area Message Encoding
(NWR-SAME) Codes)

Weather-Related Events NWR-SAME CODE
Blizzard Warning
BZW
Coastal Flood Watch
CFA
Coastal Flood Warning
CFW
Dust Storm Warning
DSW
Flash Flood Watch
FFA
Flash Flood Warning
FFW
Flash Flood Statement
FFS
Flood Watch
FLA
Flood Warning
FLW
Flood Statement
FLS
High Wind Watch
HWA
High Wind Warning
HWW
Hurricane Watch
HUA
Hurricane Warning
HUW
Hurricane Statement
HLS
Severe Thunderstorm Watch
SVA
Severe Thunderstorm Warning
SVR
Severe Weather Statement
SVS
Special Marine Warning
SMW
Special Weather Statement
SPS
Tornado Watch
TOA
Tornado Warning
TOR
Tropical Storm Watch
TRA
Tropical Storm Warning
TRW
Tsunami Watch
TSA
Tsunami Warning
TSW
Winter Storm Watch
WSA
Winter Storm Warning
WSW
Non-Weather-Related Events
National Codes-Required
NWR-SAME CODE
Emergency Action Notification
EAN
Emergency Action Termination
EAT
National Information Center
NIC
State and Local Codes-optional NWR-SAME CODE
Avalanche Watch
AVA
Avalanche Warning
AVW
Child Abduction Emergency
CAE
Civil Danger Warning
CDW
Civil Emergency Message
CEM
Earthquake Warning
EQW
Evacuation Immediate
EVI
Fire Warning
FRW
Hazardous Materials Warning
HMW
Law Enforcement Warning
LEW
Local Area Emergency
LAE
911 Telephone Outage Emerg
TOE
Nuclear Power Plant Warning
NUW
Radiological Hazard Warning
RHW
Shelter in Place Warning
SPW
Volcano Warning
VOW
Administrative Events NWR-SAME CODE
Administrative Message
ADR
National Periodic Test
NPT
Network Message Notification
NMN
Practice/Demo Warning
DMO
Required Monthly Test
RMT
Required Weekly Test
RWT


New Naming Convention for EAS Event Codes

The FCC Report and Order which became effective May 16, 2002 establishes
naming conventions for the new and future EAS event codes. In most cases,
and for all future codes to be approved, the third letter of all hazardous state
and local event codes is will be limited to one of four letters:

"W" for WARNINGS
"A" for WATCHES
"E" for EMERGENCIES
"S" for STATEMENTS

The existing event codes for Tornado Warning (TOR), Severe Thunderstorm
Warning (SVR) and Evacuation Immediate (EVI) will not be changed to conform
to this naming convention.

A WARNING is an event that alone poses a significant threat to public safety
and/or property, probability of occurrence and location is high, and the onset
time is relatively short.

A WATCH meets the classification of a warning, but either the onset time,
probability of occurrence, or location is uncertain.

An EMERGENCY is an event that, by itself, would not kill or injure or do
property damage, but indirectly may cause other things to happen that result
in a hazard. For example, a major power or telephone loss in a large city alone
is not a direct hazard, but disruption to other critical services could create a
variety of conditions that could directly threaten public safety.

A STATEMENT is a message contaning follow up information to a warning,
watch, or emergency.

SCN 04-10: NWS Implementation of New EAS Event Codes and SAME
Codes on NWR and EAS: Effective June 30, 2004



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