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Emergency Alert System (EAS) Event Codes/
NWR Specific Area Message Encoding
(NWR-SAME) Codes


The Federal Communications Commission issued a Report and Order (R&O), effective May 16, 2002, amending the EAS rules. The change included adding numerous new civil emergency, weather and natural disaster event codes and NWS marine area location codes.

The complete list of EAS event codes (also known as NWR-SAME Codes) is shown below. The chart below is divided into two groups: Codes in use before and after June 30, 2004. NWR and the EAS use identical digital protocols. NWS used Weather Radio as its primary means to activate EAS.

Codes shown below as Operational were implemented on June 30, 2004. Older SAME-enabled receivers may display them as unknown codes, although they should still play the audio. Check your receiver's manual or the manufacturer's website for more information. If you do not receive the new codes, you may want to consider buying a newer model. You will continue to receive the event codes in effect before June 30, 2004.

EAS Event (NWR-SAME) Codes

Weather-Related Events
NWR-SAME Code
Status
Blizzard Warning
BZW
Operational
Coastal Flood Watch
CFA
* Operational *
Coastal Flood Warning
CFW
* Operational *
Dust Storm Warning
DSW
* Operational *
Flash Flood Watch
FFA
Operational
Flash Flood Warning
FFW
Operational
Flash Flood Statement
FFS
Operational
Flood Watch
FLA
Operational
Flood Warning
FLW
Operational
Flood Statement
FLS
Operational
High Wind Watch
HWA
Operational
High Wind Warning
HWW
Operational
Hurricane Watch
HUA
Operational
Hurricane Warning
HUW
Operational
Hurricane Statement
HLS
Operational
Severe Thunderstorm Watch
SVA
Operational
Severe Thunderstorm Warning
SVR
Operational
Severe Weather Statement
SVS
Operational
Special Marine Warning
SMW
* Operational *
Special Weather Statement
SPS
Operational
Tornado Watch
TOA
Operational
Tornado Warning
TOR
Operational
Tropical Storm Watch
TRA
* Operational *
Tropical Storm Warning
TRW
* Operational *
Tsunami Watch
TSA
Operational
Tsunami Warning
TSW
Operational
Winter Storm Watch
WSA
Operational
Winter Storm Warning
WSW
Operational
 
Non-Weather-Related Events
NWR-SAME Code
Status
National Codes-Required
Emergency Action Notification
EAN
Not currently implemented on NWR
Emergency Action Termination
EAT
Not currently implemented on NWR
National Information Center
NIC
Operational
State and Local Codes-Optional
Avalanche Watch
AVA
* Operational *
Avalanche Warning
AVW
* Operational *
Child Abduction Emergency
CAE
* Operational *
Civil Danger Warning
CDW
* Operational *
Civil Emergency Message
CEM
Operational
Earthquake Warning
EQW
* Operational *
Evacuation Immediate
EVI
Operational
Fire Warning
FRW
* Operational *
Hazardous Materials Warning
HMW
* Operational *
Law Enforcement Warning
LEW
* Operational *
Local Area Emergency
LAE
* Operational *
911 Telephone Outage Emergency
TOE
* Operational *
Nuclear Power Plant Warning
NUW
* Operational *
Radiological Hazard Warning
RHW
* Operational *
Shelter in Place Warning
SPW
* Operational *
Volcano Warning
VOW
* Operational *
Administrative Events
NWR-SAME Code
Status
Administrative Message
ADR
Operational
National Periodic Test
NPT*
Not currently implemented on NWR
Network Message Notification
NMN
Not currently implemented on NWR
Practice/Demo Warning
DMO
Operational
Required Monthly Test
RMT
Operational
Required Weekly Test
RWT
Operational
*"Not operational for NWR at this time"


Naming Convention for EAS Event Codes

The FCC Report and Order which became effective May 16, 2002, established naming conventions for 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 limited to one of four letters:

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

Note: 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.



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Last Updated: February 5, 2015