National Weather Service United States Department of Commerce

Inclement Weather in the West This Weekend

A couple of systems will impact portions of the West and especially California with a variety of hazards this weekend. Periods of moderate to heavy rain, thunderstorms, gusty winds, localized flood concerns and heavy mountain snow are expected. The trouble spot today will be across southern Oregon and northern California into the Sierra, where travel impacts are likely. Read More >

Emergency Alert System (EAS) Event Codes

NWR Specific Area Message Encoding


(NWR-SAME) Codes

 


The complete list of EAS event codesbroadcast over NWR (also known as NWR-SAME Codes) is shown below. NWR and the EAS use identical digital protocols. NWS uses Weather Radio as its primary means to activate EAS. The list of event codes for your area is usually listed in your state or local EAS plan.


All of the codes below are operational.  Older SAME-enable receivers may display some of the more recently-approved codes as "unknown" codes, but they will play the audio. Check your receiver's manual or the manufacturer's website for more information. You may want to consider buying a newer model.

 

EAS Event (NWR-SAME) Codes

Weather-Related Events  1

NWR-SAME Code

Status

Blizzard Warning

BZW

Operational

Coastal Flood Watch

CFA

Operational

Coastal Flood Warning

CFW

Operational

Dust Storm Warning

DSW

Operational

Extreme Wind Warning

EWW

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

Snow Squall Warning

SQW 2

Operational

Special Marine Warning

SMW

Operational

Special Weather Statement

SPS

Operational

Storm Surge Watch

SSA

Operational

Storm Surge Warning

SSW

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 1

NWR-SAME Code

Status

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 1

NWR-SAME Code

Status

Administrative Message

ADR

Operational

Practice/Demo Warning

DMO

Operational

Required Monthly Test

RMT

Operational

Required Weekly Test

RWT

Operational

Naming Convention for EAS Event Codes

The FCC 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.
     

1 These are state and local codes used by the NWS. It is optional for broadcasters to activate EAS for these events.

2 Snow Squall Warnings are not conveyed to the EAS.