WunderMap Interactive Radar & Weather Stations : Weather Underground

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Radar

Fire Satellite — Fire Perimeters

Map Legends:

NEXRAD Radar:

Storm Tracks:		Movement:
	Tornado Vortex Signature
	Mesocyclone
	Hail
	Storm

Weather Stations:

Severe 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 Statement
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.

Satellite:

USGS River:

Model Data:

Hurricane:

Hurricane Hunter Observations:

Fire:

Tornado:

	Tornado Warning
	Tornado Vortex Signature
	Mesocyclone
	Tornado
	Tornado Report

NDFD Forecast:

Dr. Jeff Masters' WunderBlog:

Blizzard conditions engulf Washington D.C. and Baltimore

Snowfall rates of 1 - 2 inches per hour combined with strong northeasterly winds are creating blizzard conditions over Portions of Virginia, Maryland, and Washington D.C. this morning, as a mighty 'Noreaster continues to gather strength along the East Coast. The surface low will continue to move northeast just offshore the North Carolina and Virginia coasts and strengthen this afternoon, spreading a wide band of heavy snow across much of the Eastern U.S. Washington

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