1
Adv
anced Oper
ation
Ad
dit
io
na
l I
nfo
Event Code
Level
Default
Flood Warning
Warning
On
Fire Warning
Warning
On
Flash Freeze Warning
Warning
On
Freeze Warning
Warning
On
Hurricane Statement
Advisory
On
Hazardous Materials Warning
Warning
On*
Hurricane Watch
Watch
On
Hurricane Warning
Warning
On*
High Wind Watch
Watch
On
High Wind Warning
Warning
On
Iceberg Warning
Warning
On
Industrial Fire Warning
Warning
On*
Local Area Emergency
Advisory
On*
Law Enforcement Warning
Warning
On*
Land Slide Warning
Warning
On*
National Audible Test
Advisory
Off
National Information Center
Advisory
Off
Network Notification Message
Advisory
Off
National Periodic Test
Advisory
Off
National Silent Test
Advisory
Off
Nuclear Power Plant Warning
Warning
On*
Power Outage Advisory
Advisory
On
Radiological Hazard Warning
Warning
On*
Required Monthly Test
Advisory
Off
Required Weekly Test
Advisory
Off
†
Special Marine Warning
Warning
On
Special Weather Statement
Advisory
On
Shelter In-Place Warning
Warning
On*
Severe Thunderstorm Watch
Watch
On
Severe Thunderstorm Warning
Warning
On
Severe Weather Statement
Advisory
On
Tornado Watch
Watch
On
