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U.S. Mapa do tempo com situações extremas

Actualizado: 08:30 PM GMT em 10 de Maio de 2008Mudança de fuso horário
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Clicar numa região colorida do mapa para ver detalhes.

Histórico dos avisos sobre o tempo:
 
Aviso de ciclone - 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 - Vigilância sobre furacões
A tornado watch is issued when thunderstorms in and near the watch box area may produce tornadoes.
Aviso de tempertade muito forte - Aviso de tempertade 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 - 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 - 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 - 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 - Aviso de inundações
A flood warning is issued when flooding is occuring or is about to occur.
Vigilância de inundações/  Notas sobre inundações - Vigilância de inundações/ Notas sobre inundações
A flood watch is issued when flooding is possible in the watch area.
Informação local sobre ciclones/furacões - 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 - 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 - 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 - 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 - 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. Avisos por região
 
 
Alaska
Areal Flood Warning:
Record Report:
Arkansas
Tornado Watch:
Severe Thunderstorm Warning:
Flood Warning:
Wind Advisory:
Record Report:
Public Information Statement:
California
Record Report:
Colorado
Frost Advisory, Wind Advisory:
Freeze Warning:
Fire Weather Watch, Fire Weather Warning:
Fire Weather Warning, Fire Weather Watch:
Fire Weather Warning:
Public Information Statement:
Alamosa Vicinity/Central San Luis Valley Below 8500 Ft, Animas River Basin, 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, Central Chaffee County Below 9000 Ft, Central Colorado River Basin, Central Gunnison and Uncompahgre River Basin, Central Yampa River Basin, Debeque to Silt Corridor, Del Norte Vicinity/Northern San Luis Valley Below 8500 Ft, Eastern San Juan Mountains Above 10000 Ft, Eastern Sawatch Mountains Above 11000 Ft, Elbert/Central and East Douglas Counties Above 6000 Feet, Elkhead and Park Mountains, Flattops, Four Corners/Upper Dolores River, Gore and Elk Mountains/Central Mountain Valleys, Grand and Battlement Mesas, Grand and Summit Counties Below 9000 Feet, Grand Valley, Jackson County Below 9000 Feet, Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet, La Garita Mountains Above 10000 Ft, Larimer and Boulder Counties Between 6000 and 9000 Feet, Larimer County Below 6000 Feet/Northwest Weld County, Leadville Vicinity/Lake County Below 11000 Ft, Logan County, Lower Yampa River Basin, 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, Northern Sangre De Cristo Mountains Above 11000 Feet, Northern Sangre De Cristo Mountains Between 8500 And 11000 Ft, Northwestern Fremont County above 8500 Ft, Northwestern San Juan Mountains, Paradox Valley/Little Dolores River, Roan and Tavaputs Plateaus, Saguache County East of Continental Divide Below 10000 Ft, Saguache County West of Continental Divide Below 10000 Ft, San Juan River Basin, 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, Southern San Luis Valley, Southern Sangre De Cristo Mountains Above 11000 Ft, Southern Sangre De Cristo Mountains Between 7500 and 11000 Ft, Southwest San Juan Mountains, Teller County/Rampart Range above 7500 Ft/Pikes Peak Between 7500 And 11000 Ft, Uncompahgre Plateau/Dallas Divide, Upper Gunnison River Valley, Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Ft, Upper Yampa River Basin, Washington County, West Elk and Sawatch Mountains, Western Chaffee County Between 9000 and 11000 Ft, Western Mosquito Range/East Chaffee County Above 9000 Ft, Western Mosquito Range/East Lake County Above 11000 Ft, Western/Central Fremont County Below 8500 Ft, Wet Mountain Valley Below 8500 Feet, Wet Mountains Above 10000 Ft, Wet Mountains Between 6300 and 10000 Ft
Connecticut
Public Information Statement:
Delaware
Record Report:
Public Information Statement:
District of Columbia
Areal Flood Watch:
Record Report:
Florida
Fire Weather Watch:
Record Report:
Georgia
Tornado Watch:
Severe Thunderstorm Warning:
Special Weather Statement:
Public Information Statement:
Guam
Flood Watch / Flood Statement:
Hawaii
Flood Watch / Flood Statement:
Idaho
Record Report:
Illinois
Flood Warning:
Areal Flood Watch:
Wind Advisory:
Indiana
Flood Warning:
Iowa
Flood Warning:
Areal Flood Watch:
Wind Advisory:
Public Information Statement:
Kansas
Tornado Watch:
Severe Thunderstorm Warning:
Flood Warning:
Frost Advisory, Wind Advisory:
Wind Advisory:
Special Weather Statement:
Public Information Statement:
Louisiana
Flood Warning:
Record Report:
Maryland
Areal Flood Watch:
Coastal Flood Watch:
Record Report:
Public Information Statement:
Minnesota
Wind Advisory:
Public Information Statement:
Mississippi
Tornado Watch:
Flood Warning:
Missouri
Tornado Watch:
Flood Warning:
Areal Flood Watch:
Wind Advisory:
Special Weather Statement:
Public Information Statement:
Montana
Areal Flood Advisory:
Special Weather Statement:
Public Information Statement:
Nebraska
Freeze Watch, Wind Advisory:
Wind Advisory:
Frost Advisory, Wind Advisory:
Freeze Warning, Wind Advisory:
Public Information Statement:
New Jersey
Record Report:
Public Information Statement:
New Mexico
Wind Advisory:
Fire Weather Warning:
Fire Weather Watch, Fire Weather Warning:
New York
Frost Advisory:
Public Information Statement:
North Carolina
Areal Flood Watch:
High Wind Watch:
Wind Advisory, High Wind Watch:
Public Information Statement:
Oklahoma
Tornado Watch:
Severe Thunderstorm Warning:
Flood Warning:
Wind Advisory:
Record Report:
Public Information Statement:
Oregon
Record Report:
Pennsylvania
Frost Advisory:
Record Report:
Public Information Statement:
South Carolina
Tornado Watch:
Severe Thunderstorm Warning:
Special Weather Statement:
Public Information Statement:
South Dakota
Flood Warning:
Areal Flood Warning:
Areal Flood Advisory:
Areal Flood Watch:
Wind Advisory:
Public Information Statement:
Tennessee
Wind Advisory, High Wind Watch:
Public Information Statement:
Texas
Tornado Watch:
Fire Weather Warning:
Special Weather Statement:
Record Report:
Utah
Fire Weather Warning:
Public Information Statement:
Virginia
Flood Warning:
Areal Flood Watch:
High Wind Watch:
Record Report:
Public Information Statement:
Washington
Record Report:
West Virginia
Areal Flood Watch:
Record Report:
Wisconsin
Flood Warning:
Wyoming
Areal Flood Warning:
Special Weather Statement: