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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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