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U.S. Severe Weather Map

Uppdaterad: 06:55 AM GMT on Maj 16, 2008Edit My Time Zone
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Click on a colored region of the map for details.

Weather Warning Legend:
 
Tornado Warning - Tornado Warning
A tornado warning is issued when a funnel cloud has been spotted or a rotating thunderstorm has been indicated by doppler radar.
Tornado Watch - Tornado Watch
A tornado watch is issued when thunderstorms in and near the watch box area may produce tornadoes.
Severe Thunderstorm Warning - Severe Thunderstorm Warning
A severe thunderstorm warning is issued when a storm with any of these severe weather criteria is approaching the warning area:
  • Hail 3/4 of an inch or greater
  • Winds greater than 58 mph
  • Recent history of tree, telephone pole, or other structural damage
Severe Thunderstorm Watch - Severe Thunderstorm Watch
A severe thunderstorm watch is issued when there is a possibility that thunderstorms in and near the watch box area may produce the following severe weather conditions:
  • Hail 3/4 of an inch or greater
  • Winds greater than 58 mph
Winter Weather Advisory - Winter Weather Advisory
A winter weather advisory is issued when significant accumulations of snow, sleet, or freezing rain may affect the advisory area.
High Wind Advisory - High Wind Advisory
A high wind advisory is issued when sustained winds of 31 mph or greater are expected to occur for at least 1 hour. This advisory can also be issued if winds of 46 mph or greater are expected for any length of time.
Flood Warning - Flood Warning
A flood warning is issued when flooding is occuring or is about to occur.
Flood Watch / Flood Statement - Flood Watch / Flood Statement
A flood watch is issued when flooding is possible in the watch area.
Hurricane Local Statement - Hurricane Local Statement
This statement is issued when it is necessary to inform the public of hurricane or tropical storm watches and warnings. These statements contain detailed information of when and what adverse conditions to expect as a result of the tropical system affecting the statement area.
Heat Advisory - Heat Advisory
A heat advisory is issued when the heat index is expected to exceed 105° F (100° F in New York City) or if nighttime lows are expected to be greater than 80° F for two or more nights.
Dense Fog Advisory - Dense Fog Advisory
A dense fog advisory is issued when fog that reduces visibility to 1/4 mile or less is possible in the advisory area.
Fire Weather Advisory - Fire Weather Advisory
A fire weather advisory is issued when dry conditions in the advisory area result in a situation where forest or brush fires are possible.
Hurricane Watch - Hurricane Watch
A Hurricane Watch means hurricane conditions are possible in the next 24 hours.
Hurricane Warning - Hurricane Warning
A Hurricane Warning means hurricane conditions are expected in the next 24 hours.
Tropical Storm Watch - Tropical Storm Watch
A Tropical Storm warning means tropical storm conditions are possible in the next 24 hours.
Tropical Storm Warning - Tropical Storm Warning
A Tropical Storm warning means tropical storm conditions are expected in the next 24 hours.
 
U.S. Warnings by County
 
 
Alabama
Flood Warning:
Alaska
Wind Advisory:
High Wind Advisory:
Record Report:
Arizona
High Wind Advisory:
Fire Weather Advisory:
Arkansas
Flood Warning:
Record Report:
Public Information Statement:
California
High Wind Advisory:
Heat Advisory:
Excessive Heat Warning:
Heat Advisory:
Fire Weather Advisory:
Fire Weather Watch:
Fire Weather Warning:
Special Weather Statement:
Record Report:
Public Information Statement:
District of Columbia
Areal Flood Watch:
Florida
Public Information Statement:
Idaho
Flood Warning:
Areal Flood Watch:
High Wind Advisory:
Record Report:
Illinois
Flood Warning:
Public Information Statement:
Indiana
Flood Warning:
Public Information Statement:
Iowa
Flood Warning:
Kentucky
Flood Warning:
Public Information Statement:
Louisiana
Flood Warning:
Record Report:
Public Information Statement:
Maryland
Coastal Flood Advisory:
Areal Flood Watch:
Michigan
Public Information Statement:
Mississippi
Flood Warning:
Flood Warning:
Record Report:
Missouri
Flood Warning:
Public Information Statement:
Montana
Areal Flood Watch:
Lake Wind Advisory:
Fire Weather Watch:
Special Weather Statement:
Nevada
High Wind Advisory:
Fire Weather Advisory:
New Mexico
Areal Flood Watch:
Flood Watch / Flood Statement:
Public Information Statement:
New York
Winter Weather Statement:
North Carolina
Coastal Flood Statement:
North Dakota
Fire Weather Watch:
Ohio
Flood Warning:
Oklahoma
Record Report:
Public Information Statement:
Oregon
Flood Watch:
Special Weather Statement:
Puerto Rico
High Surf Advisory:
South Carolina
Lake Wind Advisory:
Texas
Severe Thunderstorm Warning:
Severe Thunderstorm Warning:
Flood Warning:
Flash Flood Warning:
Special Weather Statement:
Record Report:
Public Information Statement:
Vermont
Winter Weather Statement:
Virgin Islands
High Surf Advisory:
Virginia
Areal Flood Watch:
Washington
Flood Warning:
Areal Flood Watch:
Flood Watch:
Special Weather Statement:
Record Report:
West Virginia
Areal Flood Watch:
 
 

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