5
Event Codes for U.S.
and Canada
Note: Not all event
codes may be
transmitted in all
areas.
Event Description
Manufacturer May
Allow User to
Enable or Disable
this Event
The Default for
this Event
Minimal Audio or External
Alarm Required by Default
Visual Prompt Required by
Default
Level
ADR
Administrative message
Yes
Disabled
No
Advisory
AVA
Avalanche Watch
Yes
Enabled
No
Watch
AVW
Avalanche Warning
No
Enabled
Yes
Warning
BHW
Biological Hazard Warning
No
Enabled
Yes
Warning
BWW
Boil Water Warning
No
Enabled
Yes
Warning
BZW
Blizzard Warning
No
Enabled
Yes
Warning
CAE
Child Abduction Emergency
Yes
Enabled
No
Advisory
CDW
Civil Danger W arning
No
Enabled
Yes
Warning
CEM
Civil Emergency Message
No
Enabled
Yes
Warning
CFA
Coastal Flood Watch
Yes
Enabled
No
Advisory
CFW
Coastal Flood Warning
No
Enabled
Yes
Warning
CHW
Chemical Hazard Warning
No
Enabled
Yes
Warning
CWW
Contaminated Water Warning
No
Enabled
Yes
Warning
DBA
Dam Watch
Yes
Enabled
No
Watch
DBW
Dam Break Warning
No
Enabled
Yes
Warning
DEW
Contagious Disease Warning
No
Enabled
Yes
Warning
DMO
Practice/Demo
Yes
Disabled
No
Advisory
DSW
Dust Storm Warning
No
Enabled
Yes
Warning
EAN
Emergency Action Notification
No
Enabled
Yes
Warning
EAT
Emergency Action Termination
No
Enabled
Yes
Advisory
EQW
Earthquake Warning
No
Enabled
Yes
Warning
EVI
Immediate Evacuation
No
Enabled
Yes
Warning
EVA
Evacuation Watch
Yes
Enabled
No
Watch
FCW
Food Contamination Warning
No
Enabled
Yes
Warning
FFA
Flash Flood Watch
Yes
Enabled
No
Watch
FFS
Flash Flood Statement
Yes
Enabled
No
Advisory
FFW
Flash Flood Warning
No
Enabled
Yes
Warning
FLA
Flood Watch
Yes
Enabled
No
Watch
FLS
Flood Statement
Yes
Enabled
No
Advisory
FLW
Flood Warning
No
Enabled
Yes
Warning
FRW
Fire Warning
No
Enabled
Yes
Warning
FSW
Flash Freeze Warning
No
Enabled
Yes
Warning
FZW
Freeze W arning
No
Enabled
Yes
Warning
HLS
Hurricane Statement
Yes
Enabled
No
Advisory
HMW
Hazardous Materials Warning
No
Enabled
Yes
Warning
HUA
Hurricane Watch
Yes
Enabled
No
Watch
HUW
Hurricane Warning
No
Enabled
Yes
Warning
HWA
High Wind Watch
Yes
Enabled
No
Watch
HWW
High Wind Warning
No
Enabled
Yes
Warning
IBW
Iceberg W arning
No
Enabled
Yes
Warning
IFW
Industrial Fire Warning
No
Enabled
Yes
Warning
LAE
Local Area Emergency
No
Enabled
Yes
Advisory
LEW
Law Enforcement Warning
No
Enabled
Yes
Warning
LSW
Land Slide Warning
No
Enabled
Yes
Warning
NAT
National Audible Test
Yes
Disabled
No
Advisory
