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U.S. Severe Weather Map

Cập Nhật: 08:25 PM GMT vào 23 Tháng bảy, 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
Severe Thunderstorm Warning:
Alaska
Record Report:
Public Information Statement:
Arizona
Public Information Statement:
Arkansas
Flash Flood Warning:
California
Special Weather Statement:
Record Report:
Colorado
Areal Flood Advisory:
Public Information Statement:
Connecticut
Severe Thunderstorm Watch:
Areal Flood Watch:
Flash Flood Watch:
Areal Flood Advisory:
Areal Flood Watch, Areal Flood Advisory:
Areal Flood Advisory, Areal Flood Watch:
Record Report:
Delaware
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Flash Flood Watch:
Public Information Statement:
District of Columbia
Severe Thunderstorm Watch:
Flash Flood Watch:
Florida
Areal Flood Advisory:
Public Information Statement:
Georgia
Severe Thunderstorm Warning:
Public Information Statement:
Idaho
Record Report:
Public Information Statement:
Illinois
Flood Warning:
Record Report:
Public Information Statement:
Indiana
Lakeshore Flood Statement:
Public Information Statement:
Iowa
Flood Warning:
Public Information Statement:
Kansas
Public Information Statement:
Kentucky
Public Information Statement:
Louisiana
Flood Warning:
Coastal Flood Advisory:
Maryland
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Flash Flood Watch:
Special Weather Statement:
Public Information Statement:
Massachusetts
Severe Thunderstorm Watch:
Tornado Warning:
Severe Thunderstorm Warning:
Flash Flood Warning:
Areal Flood Watch:
Areal Flood Watch, Areal Flood Advisory:
Michigan
Lakeshore Flood Statement:
Minnesota
Public Information Statement:
Missouri
Record Report:
Public Information Statement:
Montana
Record Report:
Public Information Statement:
Nebraska
Public Information Statement:
New Hampshire
Areal Flood Watch:
Special Weather Statement:
New Jersey
Severe Thunderstorm Watch:
Tornado Warning:
Severe Thunderstorm Warning:
Flash Flood Watch:
Record Report:
Public Information Statement:
New Mexico
Areal Flood Advisory, Flash Flood Watch:
Areal Flood Advisory:
Record Report:
New York
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Severe Thunderstorm Warning:
Flash Flood Warning:
Flash Flood Warning:
Flood Warning, Flash Flood Warning:
Areal Flood Watch:
Flash Flood Watch:
Areal Flood Advisory, Areal Flood Watch:
Areal Flood Advisory:
Special Weather Statement:
Record Report:
Public Information Statement:
North Carolina
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Areal Flood Advisory:
Coastal Flood Statement:
Special Weather Statement:
Record Report:
Public Information Statement:
North Dakota
Areal Flood Advisory:
Ohio
Record Report:
Public Information Statement:
Oklahoma
Heat Advisory:
Oregon
Record Report:
Pennsylvania
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Flash Flood Warning:
Flash Flood Watch:
Areal Flood Advisory, Areal Flood Watch:
Areal Flood Watch, Areal Flood Advisory:
Areal Flood Advisory:
Public Information Statement:
Puerto Rico
Areal Flood Advisory:
Rhode Island
Severe Thunderstorm Watch:
Tornado Warning:
Severe Thunderstorm Warning:
Flash Flood Warning:
Areal Flood Advisory:
South Carolina
Severe Thunderstorm Warning:
South Dakota
Severe Thunderstorm Warning:
Public Information Statement:
Tennessee
Public Information Statement:
Texas
Tornado Warning:
Tornado Watch:
Inland Tropical Wind Warning:
Hurricane Warning:
Tropical Storm Warning:
Inland Hurricane Wind Warning:
Flash Flood Warning:
Coastal Flood Advisory:
Areal Flood Advisory:
Areal Flood Watch:
Areal Flood Advisory, Areal Flood Watch:
Heat Advisory:
Record Report:
Public Information Statement:
Utah
Record Report:
Vermont
Areal Flood Watch:
Virginia
Severe Thunderstorm Watch:
Severe Thunderstorm Warning:
Flash Flood Watch:
Special Weather Statement:
Record Report:
Public Information Statement:
Washington
Record Report:
West Virginia
Severe Thunderstorm Watch:
Record Report:
Public Information Statement:
Wisconsin
Flood Warning:
Public Information Statement:
Wyoming
Special Weather Statement:
Record Report:
 
 

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