Dulles, VA

20°F / -6.7°C
Light Snow
Windchill: 5°F / -15°C
Humidity: 84%
Dew Point: 16°F / -9°C
Wind: WNW at 17 mph / 27.4 km/h
Wind Gust: 33.0 mph / 53.1 km/h
Pressure: 29.92 in / 1013 hPa (Steady)
Visibility: 2.0 miles / 3.2 kilometers
Clouds: Mostly Cloudy (BKN) : 1800 ft / 548 m
Overcast (OVC) : 2300 ft / 701 m
Yesterday's Maximum: 42°F / 6°C
Yesterday's Minimum: 21°F / -6°C
UV: 0 out of 16
Sunrise:7:05 AM EST
Sunset:5:43 PM EST
Moon Rise:11:35 PM EST
Moon Set:9:25 AM EST
Moon Phase Waning Gibbous
Marine Forecast & Tides
NOAA Weather Radio
SPECI KIAD 120514Z 33023G32KT 2SM -SN BKN018 OVC023 M06/M10 A2992 RMK AO2 PK WND 33032/0514 P0000 $
As of: 12:04 AM EST on February 12, 2012
Observed at: VADOT Site_G, Herndon, VA

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Forecast

Today
partlycloudy
34° | 22°F
| -6°C
Monday
clear
41° | 29°F
| -2°C
Tuesday
chancerain
43° | 32°F
| 0°C
Today is forecast to be
nearly the same temperature as yesterday.
Now
Light snow showers will continue across north central and northeastern Maryland...the northern Shenandoah Valley...and the Washington DC metropolitan area through midnight. The snow will be tapering off along the Pennsylvania border...after leaving behind a quarter to half inch of fresh snow. Gusty winds of 30 to 40 mph...with occasional gusts to 50 mph will temporarily reduce visibilities in the heavier snow showers. Wind chill values will also drop well into the teens and 20s.
As of: 10:49 PM EST on February 11, 2012
Wind Advisory in effect until 7 am EST this morning...
Overnight
Mostly cloudy with a 50 percent chance of snow showers. Windy with lows around 19. Northwest winds 20 to 30 mph with gusts up to 50 mph.
Sunday
Mostly sunny and blustery. Highs in the lower 30s. Northwest winds 20 to 25 mph with gusts up to 45 mph.
Sunday Night
Mostly clear. Lows in the lower 20s. West winds 15 to 20 mph with gusts up to 35 mph.
Monday
Sunny. Highs in the lower 40s. West winds 10 to 15 mph.
Monday Night
Partly cloudy in the evening...then becoming mostly cloudy. Lows in the upper 20s. West winds 5 to 10 mph.
Tuesday
Cloudy with a 30 percent chance of rain showers. Highs in the lower 40s.
Tuesday Night
Mostly cloudy. Lows in the lower 30s.
Wednesday
Mostly cloudy. Highs in the upper 40s.
Wednesday Night
Partly cloudy. Lows in the lower 30s.
Thursday
Mostly cloudy with a chance of rain or snow showers. Highs in the upper 40s. Chance of precipitation 30 percent.
Thursday Night
Mostly cloudy with a chance of rain or snow showers. Lows in the upper 30s. Chance of precipitation 40 percent.
Friday
Partly sunny. Highs in the upper 40s.
Friday Night
Mostly clear. Lows in the lower 30s.
Saturday
Mostly sunny. Highs in the upper 40s.
As of: 12:30 am EST on February 12, 2012

Scientific Forecaster Discussion

Warnings & Notices

Wind Advisory

Expires 7:00 AM EST on February 12, 2012
Statement as of 9:41 PM EST on February 11, 2012

... Wind Advisory remains in effect until 7 am EST Sunday...

* timing... overnight. Winds will begin to diminish toward dawn.

* Winds... northwest 20 to 30 mph with gusts up to 50 mph.

Precautionary/preparedness actions...

A Wind Advisory means that winds of 35 mph are expected. Winds
this strong can make driving difficult... especially for high
profile vehicles. Use extra caution.





Special Statement

Expires 3:00 AM EST on February 12, 2012
Statement as of 11:04 PM EST on February 11, 2012

... One last round of snow showers tonight...

An upper level disturbance will be pivoting through the Baltimore
Washington area overnight... providing snow to the region. The snow
will be ending across northern Maryland by midnight... affecting
Metro Washington and the northern Shenandoah Valley through 1am...
and reaching southern Maryland and the northern Piedmont of Virginia
between midnight and 2 am.

Look for a quick inch of snow with this disturbance. Roads may be
snow covered and slick if left untreated. Motorists should
exercise caution on the roads tonight.


Public Information Statement

Statement as of 12:14 am EST on February 12, 2012

The following are unofficial observations taken during the past 26
hours for the storm that has been affecting our region. Appreciation
is extended to Highway departments... cooperative observers... Skywarn
spotters and media for these reports. This summary is also available
on our home Page at weather.Gov/Baltimore

********************storm total snowfall********************

Location storm total time/date comments
                     snowfall of
                     /inches/ measurement

Maryland

... Allegany County...
   1 NNW Frostburg 1.2 542 PM 2/11 co-op observer

... Anne Arundel County...
   Severn 0.3 700 am 2/11 trained spotter
   BWI Airport T 100 PM 2/11 Airport

... Baltimore County...
   2 NW Long Green 2.3 900 PM 2/11 trained spotter
   1 ESE Glyndon 1.6 901 am 2/11 trained spotter
   1 E Oella 1.0 715 am 2/11 trained spotter
   1 se Garrison 1.0 900 am 2/11 trained spotter
   1 NE Kingsville 0.8 600 am 2/11 trained spotter
   Hunt Valley 0.5 800 am 2/11 broadcast media

... Baltimore City...
   Pimlico 0.5 848 am 2/11 trained spotter

... Carroll County...
   1 SSW Manchester 3.9 1055 PM 2/11 trained spotter
   3 WSW Lineboro 1.2 1035 PM 2/11 trained spotter
   4 NE Millers 1.2 245 am 2/11 co-op observer
   1 W Westminster 1.0 700 am 2/11 public

... Howard County...
   2 N Columbia 1.0 700 am 2/11 trained spotter
   1 SSE Simpsonville 1.0 615 am 2/11 trained spotter

... Montgomery County...
   2 WSW Damascus 2.7 1158 PM 2/11 co-op observer
   5 N Laytonsville 2.5 400 PM 2/11 broadcast media
   3 E Clarksburg 0.7 902 am 2/11 trained spotter
   1 SSE Colesville 0.5 1145 PM 2/11 this evening only

... Washington County...
   1 WSW Cavetown 1.5 359 PM 2/11 trained spotter

Virginia

... Arlington County...
   Reagan National airp 0.2 1209 am 2/12 Airport

... City of Winchester...
   2 S Winchester 1.0 345 am 2/11 trained spotter

... Clarke County...
   1 NNW Berryville 0.6 735 PM 2/11 trained spotter

... Fairfax County...
   1 NNE Herndon 0.6 700 am 2/11 NWS employee
   1 E Oakton 0.5 600 am 2/11 trained spotter
   2 ESE Chantilly 0.4 1208 am 2/12 NWS employee

... Fauquier County...
   Warrenton 0.1 245 PM 2/11 NWS employee

... Frederick County...
   2 ESE Stephens City 0.6 415 am 2/11 trained spotter

... King George County...
   King George 0.3 430 PM 2/11 trained spotter

... Loudoun County...
   1 NNE Dulles interna 1.2 1200 am 2/12 ASOS
   Countryside 0.7 751 am 2/11 NWS employee
   3 NNW Dulles interna 0.6 235 PM 2/11 NWS employee
   Leesburg 0.6 300 am 2/11 public
   Dulles international 0.6 235 PM 2/11 Airport
   3 NW Dulles internat 0.4 500 am 2/11 NWS office

... Prince William County...
   3 NNW Woolsey 1.1 859 am 2/11 trained spotter

... Warren County...
   2 N Linden 1.1 858 am 2/11 trained spotter
   1 WSW Karo 0.5 700 am 2/11 trained spotter

West Virginia

... Berkeley County...
   1 WNW Bunker Hill 1.2 233 PM 2/11 cocorahs

... Grant County...
   Bayard 7.1 720 PM 2/11 co-op observer
   1 E Bismarck 0.1 550 PM 2/11 public

... Jefferson County...
   1 ENE Charles Town 1.0 147 PM 2/11 trained spotter

... Pendleton County...
   6 WSW Cherry Grove 5.0 541 PM 2/11 trained spotter
   2 S Seneca Rocks 0.5 600 PM 2/11 public


***********************peak wind gust***********************

Location Max wind time/date comments
                        gust of
                         mph measurement

Maryland

... Anz533...
   3 E Calvert Cliffs 46 948 PM 2/11 buoy

... Anz537...
   2 WSW Piney Point 53 712 PM 2/11 mesonet
   2 se Cobb Island 47 705 PM 2/11 buoy
   7 SSE Saint George I 46 930 PM 2/11 buoy

... Baltimore County...
   1 WSW Arbutus 46 713 PM 2/11 mesonet

... Frederick County...
   2 SW Flint 53 709 PM 2/11 AWOS
   1 ENE ballenger cree 46 545 PM 2/11 mesonet

... Montgomery County...
   2 se Gaithersburg 46 750 PM 2/11 mesonet

... St. Marys County...
   Point Lookout 48 805 PM 2/11 buoy
   2 ENE Patuxent River 45 436 PM 2/11 AWOS

... Washington County...
   1 E Hagerstown 46 345 PM 2/11 mesonet

Virginia

... Arlington County...
   1 E Cherrydale 53 821 PM 2/11 mesonet
   1 S Reagan National 44 307 PM 2/11 ASOS

... Augusta County...
   3 WSW Moscow 46 230 PM 2/11 mesonet

... Fairfax County...
   1 ESE Newington 47 839 PM 2/11 AWOS

... King George County...
   3 NE Dahlgren 51 847 PM 2/11 mesonet

... Loudoun County...
   2 SSW Leesburg 51 955 PM 2/11 AWOS
   1 NNE Dulles interna 49 722 PM 2/11 ASOS
   2 ENE Lovettsville 47 718 PM 2/11 mesonet


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