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U.S. Severe Weather Map

Updated: 6:00 AM GMT on May 18, 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 Statement - Winter Weather Statement
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
 
 
Alaska
Areal Flood Watch:
Record Report:
Arizona
Excessive Heat Warning:
Excessive Heat Watch:
Arkansas
Flood Warning:
Flood Advisory:
Record Report:
California
Excessive Heat Warning:
Heat Advisory:
Excessive Heat Watch:
Special Weather Statement:
Antelope Valley, Apple and Lucerne Valleys, Burney Basin / Eastern Shasta County, Carquinez Strait and Delta, Catalina Island, Central Sacramento Valley, Clear Lake/Southern Lake County, Coachella Valley, Cuyama Valley, East-Central San Joaquin Valley, Indian Wells Valley, Kern County Mountains, Los Angeles County Coast including Downtown Los Angeles, Los Angeles County Mountains excluding the Santa Monica Range, Los Angeles County Valleys, Mariposa Madera and Fresno County Foothills, Motherlode, Mountains Southwestern Shasta County to Northern Lake County, Northeast Foothills/Sacramento Valley, Northern Sacramento Valley, Northern San Joaquin Valley, Orange County Coastal Areas, Riverside County Mountains, San Bernardino and Riverside County Valleys -The Inland Empire, San Bernardino County Mountains, San Diego County Coastal Areas, San Diego County Deserts, San Diego County Mountains, San Diego County Valleys, San Luis Obispo County Central Coast, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Ana Mountains and Foothills, Santa Barbara County Central Coast, Santa Barbara County Mountains, Santa Barbara County South Coast, Santa Clarita Valley, Santa Monica Mountains Recreational Area, Santa Ynez Valley, Shasta Lake Area / Northern Shasta County, Sierra Nevada from Yosemite to Kings Canyon, Southeastern Kern County Desert, Southeastern San Joaquin Valley, Southern Sacramento Valley, Southwestern San Joaquin Valley, Tulare County Foothills, Tulare County Mountains, Ventura County Coast, Ventura County Coastal Valleys, Ventura County Interior Valleys, Ventura County Mountains, West Slope Northern Sierra Nevada, West-Central San Joaquin Valley, Western Plumas County/Lassen Park
Record Report:
Antelope Valley, Apple and Lucerne Valleys, Burney Basin / Eastern Shasta County, Carquinez Strait and Delta, Catalina Island, Central Sacramento Valley, Clear Lake/Southern Lake County, Coachella Valley, Cuyama Valley, East-Central San Joaquin Valley, Greater Lake Tahoe Area, Indian Wells Valley, Kern County Mountains, Lassen-Eastern Plumas-Eastern Sierra Counties, Los Angeles County Coast including Downtown Los Angeles, Los Angeles County Mountains excluding the Santa Monica Range, Los Angeles County Valleys, Mariposa Madera and Fresno County Foothills, Mendocino Coast, Mendocino Interior, Mono, Motherlode, Mountains Southwestern Shasta County to Northern Lake County, North Coast Interior, Northeast Foothills/Sacramento Valley, Northern Sacramento Valley, Northern San Joaquin Valley, Orange County Coastal Areas, Redwood Coast, Riverside County Mountains, San Bernardino and Riverside County Valleys -The Inland Empire, San Bernardino County Mountains, San Diego County Coastal Areas, San Diego County Deserts, San Diego County Mountains, San Diego County Valleys, San Luis Obispo County Central Coast, San Luis Obispo County Interior Valleys, San Luis Obispo County Mountains, Santa Ana Mountains and Foothills, Santa Barbara County Central Coast, Santa Barbara County Mountains, Santa Barbara County South Coast, Santa Clarita Valley, Santa Monica Mountains Recreational Area, Santa Ynez Valley, Shasta Lake Area / Northern Shasta County, Sierra Nevada from Yosemite to Kings Canyon, Southeastern Kern County Desert, Southeastern San Joaquin Valley, Southern Sacramento Valley, Southwestern San Joaquin Valley, Surprise Valley California, Tulare County Foothills, Tulare County Mountains, Upper Trinity River, Ventura County Coast, Ventura County Coastal Valleys, Ventura County Interior Valleys, Ventura County Mountains, West Slope Northern Sierra Nevada, West-Central San Joaquin Valley, Western Plumas County/Lassen Park
Public Information Statement:
Colorado
Fire Weather Watch:
Public Information Statement:
Florida
Dense Smoke Advisory:
Record Report:
Georgia
Public Information Statement:
Idaho
Flood Warning, Areal Flood Warning:
Flood Warning:
Areal Flood Advisory:
Flood Watch, Areal Flood Advisory:
Areal Flood Watch:
Flood Watch, Areal Flood Watch:
Flood Watch:
Record Report:
Illinois
Flood Warning:
Indiana
Flood Warning:
Iowa
Flood Warning:
Fire Weather Advisory:
Public Information Statement:
Kentucky
Flood Warning:
Louisiana
Flood Warning:
Michigan
Public Information Statement:
Minnesota
High Wind Advisory:
Frost Advisory:
Fire Weather Advisory:
Mississippi
Flood Warning:
Missouri
Flood Warning:
Montana
Flood Warning:
Flood Watch, Areal Flood Advisory, Areal Flood Watch:
Flood Watch, Areal Flood Watch:
Areal Flood Watch:
Areal Flood Watch, Areal Flood Advisory:
Flood Watch, Areal Flood Advisory:
Areal Flood Advisory:
Flood Watch:
Lake Wind Advisory:
Fire Weather Warning:
Fire Weather Watch:
Special Weather Statement:
Hydrologic Statement:
Record Report:
Nebraska
Fire Weather Advisory:
Fire Weather Watch:
Nevada
Excessive Heat Watch:
Record Report:
New York
Tornado Warning:
Public Information Statement:
North Dakota
High Wind Advisory:
Frost Advisory:
Fire Weather Advisory:
Public Information Statement:
Oregon
Flood Warning:
Flood Watch:
Special Weather Statement:
Record Report:
Pennsylvania
Record Report:
Public Information Statement:
South Carolina
Lake Wind Advisory:
South Dakota
Fire Weather Advisory:
Texas
Flood Warning:
Flood Warning:
Record Report:
Washington
Flood Warning:
Areal Flood Advisory, Flood Watch:
Flood Watch:
Areal Flood Watch:
Flood Watch, Areal Flood Advisory:
Areal Flood Advisory:
Special Weather Statement:
Record Report:
Public Information Statement:
Wisconsin
Public Information Statement:
Wyoming
Areal Flood Watch:
 
 

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