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U.S. Severe Weather Map

Mise à jour: 05:30 GMT le 10 mai 2008Edit My Time Zone
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Click on a colored region of the map for details.

Weather Warning Legend:
 
Avis de tornade - Avis de tornade
A tornado warning is issued when a funnel cloud has been spotted or a rotating thunderstorm has been indicated by doppler radar.
Veille de tornade - Veille de tornade
A tornado watch is issued when thunderstorms in and near the watch box area may produce tornadoes.
Avis d'orages violents - Avis d'orages violents
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
Veille d'orages violents - Veille d'orages violents
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
Avertissement d'hiver - Avertissement d'hiver
A winter weather advisory is issued when significant accumulations of snow, sleet, or freezing rain may affect the advisory area.
Avis de vent fort - Avis de vent fort
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.
Avis d'inondation - Avis d'inondation
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.
Avis de canicule - Avis de canicule
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.
Avis de brouillard intense - Avis de brouillard intense
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
Severe Thunderstorm Warning:
Special Weather Statement:
Public Information Statement:
Alaska
Areal Flood Warning:
Arkansas
Flood Warning:
Special Weather Statement:
Record Report:
California
Record Report:
Public Information Statement:
Colorado
Flood Advisory:
Wind Advisory:
Fire Weather Warning:
Connecticut
Coastal Flood Advisory:
Public Information Statement:
Delaware
Coastal Flood Statement:
Record Report:
District of Columbia
Record Report:
Public Information Statement:
Florida
Public Information Statement:
Georgia
Public Information Statement:
Hawaii
Flood Watch / Flood Statement:
Idaho
Freeze Warning:
Record Report:
Illinois
Flood Warning:
Indiana
Flood Warning:
Iowa
Flood Warning:
Kansas
Flood Warning:
Areal Flood Advisory:
Wind Advisory:
Louisiana
Flood Warning:
Special Weather Statement:
Record Report:
Maryland
Record Report:
Public Information Statement:
Massachusetts
Wind Advisory:
Public Information Statement:
Michigan
Public Information Statement:
Mississippi
Flood Warning:
Special Weather Statement:
Missouri
Flood Warning:
Areal Flood Advisory:
Special Weather Statement:
Montana
Areal Flood Advisory:
Snow Advisory:
Special Weather Statement:
Public Information Statement:
Nebraska
Wind Advisory:
New Jersey
Coastal Flood Statement:
Coastal Flood Advisory:
Record Report:
Public Information Statement:
New Mexico
Fire Weather Warning, Fire Weather Watch:
Fire Weather Watch:
Fire Weather Warning:
New York
Coastal Flood Advisory:
Public Information Statement:
North Carolina
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Flood Warning:
Public Information Statement:
North Dakota
Winter Weather Advisory:
Oklahoma
Flood Warning:
Record Report:
Oregon
Record Report:
Pennsylvania
Record Report:
South Carolina
Public Information Statement:
South Dakota
Flood Warning:
Areal Flood Warning:
Areal Flood Advisory:
Winter Weather Advisory:
Tennessee
Special Weather Statement:
Public Information Statement:
Texas
Fire Weather Watch:
Record Report:
Vermont
Public Information Statement:
Virginia
Flood Warning:
Special Weather Statement:
Record Report:
Public Information Statement:
Washington
Record Report:
West Virginia
Areal Flood Advisory:
Record Report:
Public Information Statement:
Wisconsin
Flood Warning:
Frost Advisory:
Wyoming
Areal Flood Warning:
Snow Advisory:
 
 

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