U.S. Severe Weather Map

Actualización: 08:40 AM GMT on Novembro 22, 2009 — Edit My Time Zone

Click on a colored region of the map for details.

Weather Warning Legend:

- 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
A tornado watch is issued when thunderstorms in and near the watch box area may produce tornadoes.

- 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
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
A winter weather advisory is issued when significant accumulations of snow, sleet, or freezing rain may affect the advisory area.

- 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
A flood warning is issued when flooding is occuring or is about to occur.

- Flood Watch / Flood Statement
A flood watch is issued when flooding is possible in the watch area.

- 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
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
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
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
A Hurricane Watch means hurricane conditions are possible in the next 24 hours.

- Hurricane Warning
A Hurricane Warning means hurricane conditions are expected in the next 24 hours.

- Tropical Storm Watch
A Tropical Storm warning means tropical storm conditions are possible in the next 24 hours.

- Tropical Storm Warning
A Tropical Storm warning means tropical storm conditions are expected in the next 24 hours.

	U.S. Warnings by County

Alaska

Blizzard Warning:

Bristol Bay, Kuskokwim Delta, Pribilof Islands

Record Report:

Alaska Peninsula, Anchorage, Baldwin Peninsula and Selawik Valley, Bristol Bay, Central Aleutians, Central Beaufort Sea Coast, Central Interior, Chukchi Sea Coast, Copper River Basin, Deltana and Tanana Flats, Denali, Eastern Alaska Range, Eastern Aleutians, Eastern Beaufort Sea Coast, Eastern Norton Sound and Nulato Hills, Kodiak Island, Kuskokwim Delta, Lower Kobuk and Noatak Valleys, Lower Koyukuk and Middle Yukon Valleys, Lower Kuskokwim Valley, Lower Yukon Valley, Matanuska Valley, Middle Tanana Valley, Northeast Prince William Sound, Northeastern Brooks Range, Northern and Interior Seward Peninsula, Northern Arctic Coast, Northwestern Brooks Range, Pribilof Islands, Southeast Prince William Sound, Southeastern Brooks Range, Southern Seward Peninsula Coast, St Lawrence Island and Bering Strait Coast, Susitna Valley, Upper Kobuk and Noatak Valleys, Upper Koyukuk Valley, Upper Kuskokwim Valley, Upper Tanana Valley and the Fortymile Country, Western Aleutians, Western Arctic Coast, Western Kenai Peninsula, Western Prince William Sound, Yukon Delta, Yukon Flats and Surrounding Uplands

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Arkansas

Flood Warning:

White, Woodruff, Arkansas, Monroe, Jackson, Independence, Union, Ashley, Lawrence, Bradley, Calhoun

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California

Coastal Flood Statement:

Los Angeles County Coast including Downtown Los Angeles, San Luis Obispo County Central Coast, Santa Barbara County Central Coast, Ventura County Coast

Wind Advisory:

Central Siskiyou County, Los Angeles County Mountains excluding the Santa Monica Range, Santa Barbara County Mountains, Santa Barbara County South Coast, Ventura County Mountains

Lake Wind Advisory:

Greater Lake Tahoe Area

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Georgia

Flood Warning:

Dodge, Telfair, Wilcox, Screven, Effingham, Appling, Toombs, Jeff Davis

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Idaho

Winter Weather Advisory:

Boise Mountains, Caribou Highlands, Lost River/Pashimeroi, Northern Clearwater Mountains, Northern Panhandle, Orofino/Grangeville Region, Southern Clearwater Mountains, Upper Snake Highlands, Upper Weiser River, Wasatch Mountains/Idaho Portion, West Central Mountains

Winter Storm Warning:

Big and Little Wood River Region, Central Panhandle Mountains, Coeur d'Alene Area, Idaho Palouse, Sawtooth Mountains

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Illinois

Flood Warning:

Jackson, Union, Brown, Cass, Mason, Pike, Scott, Fulton, Morgan, Schuyler, Piatt, Madison, Randolph, Alexander, Calhoun, Jersey, Menard

Public Information Statement:

Boone, Cook, DeKalb, DuPage, Ford, Grundy, Iroquois, Kane, Kankakee, Kendall, La Salle, Lake, Lee, Livingston, McHenry, Ogle, Will, Winnebago

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Indiana

Public Information Statement:

Benton, Jasper, Lake, Newton, Porter

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Iowa

Public Information Statement:

Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell, Winneshiek

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Louisiana

Flood Warning:

Caldwell, Ouachita, Union, Bossier, Webster, Franklin, East Baton Rouge, St. Mary, Calcasieu, Beauregard, Pointe Coupee, West Feliciana

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Maryland

Public Information Statement:

Dorchester, Inland Worcester, Maryland Beaches, Somerset, Wicomico

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Michigan

Dense Fog Advisory:

Alcona, Allegan, Alpena, Antrim, Arenac, Barry, Bay, Benzie, Calhoun, Charlevoix, Cheboygan, Chippewa, Clare, Clinton, Crawford, Eaton, Emmet, Genesee, Gladwin, Grand Traverse, Gratiot, Huron, Ingham, Ionia, Iosco, Isabella, Jackson, Kalamazoo, Kalkaska, Kent, Lake, Lapeer, Leelanau, Lenawee, Livingston, Mackinac, Macomb, Manistee, Mason, Mecosta, Midland, Missaukee, Monroe, Montcalm, Montmorency, Muskegon, Newaygo, Oakland, Oceana, Ogemaw, Osceola, Oscoda, Otsego, Ottawa, Presque Isle, Roscommon, Saginaw, Sanilac, Shiawassee, St. Clair, Tuscola, Van Buren, Washtenaw, Wayne, Wexford

Special Weather Statement:

Alger, Luce, Northern Schoolcraft, Southern Schoolcraft

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Minnesota

Public Information Statement:

Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha, Winona

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Missouri

Flood Warning:

Perry, Scott, St. Charles, Gasconade, Cape Girardeau, Montgomery, Jefferson, St. Louis

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Montana

Winter Weather Advisory:

Bitterroot/Sapphire Mountains, Lower Clark Fork Region

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Nevada

Lake Wind Advisory:

Greater Lake Tahoe Area, Western Nevada Basin and Range including Pyramid Lake

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North Carolina

Flood Warning:

Martin

Public Information Statement:

Bertie, Camden, Chowan, Eastern Currituck, Gates, Herford, Northampton, Pasquotank, Perquimans, Western Currituck

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Oklahoma

Dense Fog Advisory:

Caddo, Carter, Comanche, Cotton, Garvin, Grady, Jefferson, Johnston, Love, Marshall, Murray, Stephens

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Oregon

Wind Advisory:

Central and Eastern Lake County, Central Oregon, Central Willamette Valley, East Columbia River Gorge, Foothills of the Blue Mountains, Greater Portland Metro Area, Lower Columbia, Lower Columbia Basin, Northern Wheeler and Southern Gilliam Counties, South Willamette Valley

High Wind Warning:

Central Oregon Coast, Curry County Coast, Grande Ronde Valley, North Central Oregon, North Oregon Coast, South Central Oregon Coast, Wallowa County

Winter Weather Advisory:

Baker County, Central Oregon, Harney County, Klamath Basin, Malheur County, Northern and Eastern Klamath County and Western Lake County, Siskiyou Mountains and Southern Oregon Cascades, South Central Oregon Cascades, Southern Blue Mountains of Oregon

Winter Storm Warning:

Cascades in Lane County, Northern Blue Mountains of Oregon, Northern Oregon Cascades

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South Carolina

Flood Warning:

Allendale, Hampton, Jasper

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South Dakota

Flood Warning:

Spink

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Texas

Flood Warning:

Franklin, Bowie, Angelina, Cass, Polk, Morris, Tyler, Calhoun, Red River, Titus, Victoria, Houston, Trinity, Orange, Smith, Wood, DeWitt, Goliad, Newton, Refugio

Flood Warning:

Hunt, Rockwall

Dense Fog Advisory:

Anderson, Archer, Bell, Bosque, Brooks, Clay, Coastal Cameron, Coastal Willacy, Collin, Cooke, Coryell, Dallas, Delta, Denton, Ellis, Erath, Falls, Fannin, Freestone, Grayson, Hamilton, Henderson, Hidalgo, Hill, Hood, Hopkins, Hunt, Inland Cameron, Inland Willacy, Jack, Jim Hogg, Johnson, Kaufman, Kenedy, Lamar, Lampasas, Leon, Limestone, McLennan, Milam, Montague, Navarro, Palo Pinto, Parker, Rains, Robertson, Rockwall, Somervell, Starr, Tarrant, Van Zandt, Wichita, Wise, Young, Zapata

Record Report:

Aransas, Bee, Calhoun, Duval, Goliad, Jim Wells, Kleberg, La Salle, Live Oak, McMullen, Nueces, Refugio, San Patricio, Victoria, Webb

Public Information Statement:

Aransas, Bee, Calhoun, Duval, Goliad, Jim Wells, Kleberg, La Salle, Live Oak, McMullen, Nueces, Refugio, San Patricio, Victoria, Webb

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Utah

Public Information Statement:

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Virginia

Public Information Statement:

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Washington

Flood Warning:

Mason

High Wind Warning:

Admiralty Inlet Area, Central Coast, Eastern Strait of Juan de Fuca, Lower Chehalis Valley Area, North Coast, South Washington Coast, Southwest Interior, Western Strait of Juan De Fuca, Willapa Hills

Wind Advisory:

East Columbia River Gorge, East Puget Sound Lowlands, Everett and Vicinity, Foothills of the Blue Mountains, Greater Vancouver Area, Hood Canal Area, Lower Columbia and I - 5 Corridor in Cowlitz County, Lower Columbia Basin, San Juan County, Seattle/Bremerton Area, Tacoma Area, Western Skagit County, Western Whatcom County

Winter Storm Warning:

Northwest Blue Mountains, Olympics, South Washington Cascades, West Slopes Central Cascades and Passes, West Slopes Northern Cascades and Passes

Winter Weather Advisory:

East Slopes Northern Cascades, East Slopes of the Central Cascades, East Slopes of the Southern Cascades, Northeast Blue Mountains, Northeast Mountains, Okanogan Highlands, Okanogan Valley, Spokane Area, Upper Columbia Basin, Washington Palouse, Waterville Plateau

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Wisconsin

Dense Fog Advisory:

Sheboygan

Special Weather Statement:

Brown, Calumet, Door, Kewaunee, Manitowoc, Menominee, Northern Marinette County, Northern Oconto County, Outagamie, Shawano, Southern Marinette County, Southern Oconto County, Waupaca, Waushara, Winnebago

Public Information Statement:

Adams, Buffalo, Clark, Crawford, Grant, Jackson, Juneau, La Crosse, Monroe, Richland, Taylor, Trempealeau, Vernon

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Wyoming

Special Weather Statement:

Jackson Hole, Salt River and Wyoming Ranges, Star Valley, Teton and Gros Ventre Mountains, Upper Green River Basin Foothills, Wind River Mountains West, Yellowstone National Park

Public Information Statement:

Southwest Wyoming

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Be sure to check out our new

Interactive Tornado Map!

Current Warnings:

Alaska
Arkansas
California
Georgia
Idaho
Illinois
Indiana
Iowa
Louisiana
Maryland
Michigan
Minnesota
Missouri
Montana
Nevada
North Carolina
Oklahoma
Oregon
South Carolina
South Dakota
Texas
Utah
Virginia
Washington
Wisconsin
Wyoming

Severe Weather Forecasts:

Severe Weather Maps and FAQs:

Current Radar: