U.S. Mapa do tempo com situações extremas

Actualizado: 09:55 PM GMT em 22 de Novembro de 2009 — Mudança de fuso horário

Clicar numa região colorida do mapa para ver detalhes.

Histórico dos avisos sobre o tempo:

- Aviso de ciclone
A tornado warning is issued when a funnel cloud has been spotted or a rotating thunderstorm has been indicated by doppler radar.

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

- Aviso de tempestade muito forte
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

- Vigia sobre trovoadas muito fortes
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

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

- Aviso de ventos muito fortes
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.

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

- Vigilância de inundações/ Notas sobre inundações
A flood watch is issued when flooding is possible in the watch area.

- Informação local sobre ciclones/furacões
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.

- Aviso de aquecimento
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.

- Aviso de nevoeiro cerrado
A dense fog advisory is issued when fog that reduces visibility to 1/4 mile or less is possible in the advisory area.

- Avisos de tempo favorável a incêndios
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. Avisos por região

Alabama

Public Information Statement:

Butler, Choctaw, Clarke, Conecuh, Covington, Crenshaw, Escambia, Lower Baldwin, Lower Mobile, Monroe, Upper Baldwin, Upper Mobile, Washington, Wilcox

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Alaska

Wind Advisory:

Cape Decision to Salisbury Sound Coastal Area, Dixon Entrance to Cape Decision Coastal Area, Misty Fjords, Southern Inner Channels

High Wind Watch:

Anchorage, Western Prince William Sound

Winter Weather Advisory:

Lower Yukon Valley

Special Weather Statement:

Anchorage, Western Prince William Sound

Record Report:

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Arkansas

Flood Warning:

White, Woodruff, Arkansas, Monroe, Jackson, Bradley, Union, Ashley, 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:

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

Record Report:

Coastal North Bay Including Point Reyes National Seashore, East Bay Hills and the Diablo Range, East Bay Interior Valleys, Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Monument, North Bay Interior Valleys, North Bay Mountains, Northern Monterey Bay, Northern Salinas Valley/Hollister Valley and Carmel Valley, San Francisco, San Francisco Bay Shoreline, San Francisco Peninsula Coast, Santa Clara Valley Including San Jose, Santa Cruz Mountains, Santa Lucia Mountains and Los Padres National Forest, Southern Monterey Bay and Big Sur Coast, Southern Salinas Valley/Arroyo Seco and Lake San Antonio

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Colorado

Winter Weather Advisory:

Elkhead and Park Mountains, Flattops, Gore and Elk Mountains/Central Mountain Valleys

Public Information Statement:

Boulder and Jefferson Counties Below 6000 Feet/West Broomfield County, Central and East Adams and Arapahoe Counties, Central and South Weld County, Central and Southeast Park County, Elbert/Central and East Douglas Counties Above 6000 Feet, Grand and Summit Counties Below 9000 Feet, Jackson County Below 9000 Feet, Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet, Larimer and Boulder Counties Between 6000 and 9000 Feet, Larimer County Below 6000 Feet/Northwest Weld County, Logan County, Morgan County, North and Northeast Elbert County Below 6000 Feet/North Lincoln County, North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County, Northeast Weld County, Phillips County, Sedgwick County, South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet, South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet, Southeast Elbert County Below 6000 Feet/South Lincoln County, Washington County, West Jackson and West Grand Counties Above 9000 Feet

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Florida

Areal Flood Advisory:

Marion

Public Information Statement:

Coastal Escambia, Coastal Okaloosa, Coastal Santa Rosa, Inland Escambia, Inland Okaloosa, Inland Santa Rosa

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Georgia

Flood Warning:

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

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Idaho

Winter Weather Advisory:

Caribou Highlands, Northern Clearwater Mountains, Northern Panhandle, Orofino/Grangeville Region, Southern Clearwater Mountains, Upper Snake Highlands, Wasatch Mountains/Idaho Portion

Winter Storm Warning:

Central Panhandle Mountains, Coeur d'Alene Area, Idaho Palouse

Public Information Statement:

Central Panhandle Mountains, Coeur d'Alene Area, Idaho Palouse, Lewis and Southern Nez Perce Counties, Lewiston Area, Northern Panhandle

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Illinois

Flood Warning:

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

Hydrologic Statement:

Piatt

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Iowa

Public Information Statement:

Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon, O'Brien, Osceola, Plymouth, Sioux, Woodbury

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Kansas

Public Information Statement:

Bourbon, Cherokee, Crawford, Jewell, Mitchell, Osborne, Phillips, Rooks, Smith

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Louisiana

Flood Warning:

Caldwell, Ouachita, Union, Bossier, Webster, Franklin, St. Mary, Calcasieu, Beauregard

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Minnesota

Dense Fog Advisory:

Carlton/South St. Louis, Northern Cook/Northern Lake, Southern Cook/North Shore, Southern Lake/North Shore

Record Report:

Anoka, Benton, Blue Earth, Brown, Carver, Chippewa, Chisago, Dakota, Douglas, Faribault, Freeborn, Goodhue, Hennepin, Isanti, Kanabec, Kandiyohi, Lac qui Parle, Le Sueur, Martin, McLeod, Meeker, Mille Lacs, Morrison, Nicollet, Pope, Ramsey, Redwood, Renville, Rice, Scott, Sherburne, Sibley, Stearns, Steele, Stevens, Swift, Todd, Waseca, Washington, Watonwan, Wright, Yellow Medicine

Public Information Statement:

Cottonwood, Jackson, Lincoln, Lyon, Murray, Nobles, Pipestone, Rock

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Mississippi

Public Information Statement:

George, Greene, Perry, Stone, Wayne

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Missouri

Flood Warning:

Perry, Scott, Cape Girardeau, Jefferson, St. Louis

Public Information Statement:

Barry, Barton, Benton, Camden, Cedar, Christian, Dade, Dallas, Dent, Douglas, Greene, Hickory, Howell, Jasper, Laclede, Lawrence, Maries, McDonald, Miller, Morgan, Newton, Oregon, Ozark, Phelps, Polk, Pulaski, Shannon, St. Clair, Stone, Taney, Texas, Vernon, Webster, Wright

: Início da página :

Montana

Winter Weather Advisory:

Bitterroot/Sapphire Mountains, Gallatin, Livingston Area, Lower Clark Fork Region, Madison, Northern Park, Paradise Valley

: Início da página :

Nebraska

Public Information Statement:

Adams, Buffalo, Clay, Dakota, Dawson, Dixon, Fillmore, Franklin, Furnas, Gosper, Greeley, Hall, Hamilton, Harlan, Howard, Kearney, Merrick, Nance, Nuckolls, Phelps, Polk, Sherman, Thayer, Valley, Webster, York

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Nevada

Lake Wind Advisory:

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

Wind Advisory:

Extreme Eastern Elko County, Northern Elko County, Ruby Mountains/East Humboldt Range, Southwest and South Central Elko County

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North Carolina

Flood Warning:

Martin

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Oregon

High Surf Advisory:

Central Oregon Coast, Curry County Coast, North Oregon Coast, South Central Oregon Coast

High Wind Warning:

North Central Oregon

Wind Advisory:

East Columbia River Gorge, Foothills of the Blue Mountains, Lower Columbia Basin, Northern Wheeler and Southern Gilliam Counties

Winter Storm Warning:

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

Winter Weather Advisory:

Southern Blue Mountains of Oregon

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South Carolina

Flood Warning:

Allendale, Hampton, Jasper

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South Dakota

Flood Warning:

Spink

Public Information Statement:

Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix, Clay, Davison, Douglas, Gregory, Hanson, Hutchinson, Jerauld, Kingsbury, Lake, Lincoln, McCook, Miner, Minnehaha, Moody, Sanborn, Turner, Union, Yankton

: Início da página :

Texas

Flood Warning:

Jackson, Franklin, Bowie, Cass, Morris, Calhoun, Red River, Titus, Victoria, Orange, Smith, Wood, DeWitt, Goliad, Newton, Refugio

Dense Fog Advisory:

Bee, Calhoun, Goliad, La Salle, Live Oak, McMullen, Refugio, Victoria

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Utah

Winter Weather Advisory:

Wasatch Mountains I-80 North, Western Uinta Mountains

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Washington

Flood Warning:

Mason

High Surf Advisory:

Central Coast, North Coast, South Washington Coast

Wind Advisory:

Admiralty Inlet Area, East Columbia River Gorge, East Slopes of the Southern Cascades, Eastern Strait of Juan de Fuca, Everett and Vicinity, Foothills of the Blue Mountains, Hood Canal Area, Lower Chehalis Valley Area, Lower Columbia Basin, Seattle/Bremerton Area, Southwest Interior, Tacoma Area, Western Strait of Juan De Fuca

Winter Storm Warning:

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

Winter Weather Advisory:

East Slopes of the Central Cascades, East Slopes of the Southern Cascades, Northeast Blue Mountains, Northeast Mountains, Spokane Area

Public Information Statement:

East Slopes Northern Cascades, Lower Garfield and Asotin Counties, Moses Lake Area, Northeast Blue Mountains, Northeast Mountains, Okanogan Highlands, Okanogan Valley, Spokane Area, Upper Columbia Basin, Washington Palouse, Waterville Plateau, Wenatchee Area

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Wisconsin

Dense Fog Advisory:

Douglas

Record Report:

Barron, Chippewa, Dunn, Eau Claire, Pepin, Pierce, Polk, Rusk, St. Croix

: Início da página :

Be sure to check out our new

Interactive Tornado Map!

Avisos actuais:

Alabama
Alaska
Arkansas
California
Colorado
Florida
Georgia
Idaho
Illinois
Iowa
Kansas
Louisiana
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
North Carolina
Oregon
South Carolina
South Dakota
Texas
Utah
Washington
Wisconsin

Previsão para situações extremas:

Mapa do tempo para situações extremas e FAQs (perguntas mais frequentes):

Radar actual: