Washington, District of Columbia Weather Conditions
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Next 12 Hours
5 Day Forecast
- Sunday
-
- High: 33 °
- Low: 23 °
- Partly Cloudy
- Monday
-
- High: 43 °
- Low: 31 °
- Clear
- Tuesday
-
- High: 47 °
- Low: 34 °
- Chance of Rain
- Wednesday
-
- High: 52 °
- Low: 34 °
- Partly Cloudy
- Thursday
-
- High: 52 °
- Low: 41 °
- Chance of Rain
Forecast for Washington, District of Columbia
Updated: 3:30 PM EST on February 12, 2012
-
Rest of This Afternoon
Mostly sunny. Highs in the lower 30s. Northwest winds 15 to 20 mph.
-
Tonight
Clear. Lows in the lower 20s. West winds 10 to 15 mph.
-
Monday
Sunny. Highs in the mid 40s. West winds 5 to 10 mph.
-
Monday Night
Partly cloudy in the evening...then becoming cloudy. Lows in the lower 30s. Southwest winds around 5 mph in the evening... becoming light and variable.
-
Tuesday
Cloudy with a 30 percent chance of rain showers. Highs in the upper 40s. East winds 5 to 10 mph...becoming south in the afternoon.
-
Tuesday Night
Cloudy with a chance of rain or snow showers. Lows in the mid 30s. Chance of precipitation 30 percent.
-
Wednesday
Mostly sunny. Highs around 50.
-
Wednesday Night
Mostly cloudy. Lows in the lower 30s.
-
Thursday
Cloudy with a chance of rain or snow showers. Highs in the mid 40s. Chance of precipitation 40 percent.
-
Thursday Night
Cloudy. Lows in the upper 30s.
-
Friday
Mostly sunny. Highs in the lower 50s.
-
Friday Night
Partly cloudy. Lows in the lower 30s.
-
Saturday
Mostly sunny. Highs in the upper 40s.
Severe Weather Alert Descriptions
Public Information Statement Statement as of 11:54 am EST on February 12, 2012
The following are unofficial observations taken during the past 36
hours for the snowfall that has fallen since late Friday night
through 7am Sunday morning. Appreciation is extended to cooperative
... Airport and cocorahs observers... Skywarn spotters and the 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...
Frostburg 1.8 700 am 2/12 co-op observer
1 NNW Frostburg 1.2 542 PM 2/11 co-op observer
1 SSE Cresaptown-Bel 0.2 700 am 2/11 cocorahs
1 S Cumberland T 700 am 2/12 co-op observer
... Anne Arundel County...
3 SSW South Gate 1.2 800 am 2/11 cocorahs
3 NE Churchton/river 1.0 600 am 2/12 co-op observer
2 W Severn 1.0 700 am 2/11 cocorahs
2 NW Riva 0.8 900 am 2/12 trained spotter
2 ENE Deale 0.7 700 am 2/12 cocorahs
BWI Airport 0.5 1200 am 2/12 Airport
3 E Laurel 0.5 700 am 2/11 cocorahs
3 ESE Pasadena 0.5 800 am 2/11 cocorahs
2 SSW Severn 0.3 900 am 2/11 cocorahs
Severn 0.3 700 am 2/11 trained spotter
1 se Deale 0.2 700 am 2/12 cocorahs
... Baltimore County...
2 NW Long Green 2.8 1100 PM 2/11 trained spotter
1 ESE Glyndon 1.6 901 am 2/11 trained spotter
Hunt Valley 1.5 1100 PM 2/11 broadcast media
1 SW Jacksonville 1.3 800 am 2/12 cocorahs
1 SW Long Green 1.2 700 am 2/12 cocorahs
NE Reisterstown 1.1 700 am 2/11 cocorahs
1 E Oella 1.0 715 am 2/11 trained spotter
1 SW Towson 1.0 830 am 2/11 cocorahs
2 WNW Catonsville 1.0 700 am 2/11 cocorahs
1 se Garrison 1.0 900 am 2/11 trained spotter
4 N Cockeysville 0.9 900 am 2/11 cocorahs
1 NE Kingsville 0.8 600 am 2/11 trained spotter
1 E Kingsville 0.6 700 am 2/12 cocorahs
... Baltimore City...
Pimlico 0.5 848 am 2/11 trained spotter
... Calvert County...
6 E Marlton 0.2 800 am 2/11 cocorahs
1 W Prince Frederick 0.1 700 am 2/12 cocorahs
... Carroll County...
1 SSW Manchester 3.9 1055 PM 2/11 trained spotter
4 NE Millers 2.5 200 am 2/12 co-op observer
se Mount Airy 1.6 700 am 2/11 cocorahs
1 W Westminster 1.3 700 am 2/11 cocorahs
3 NW Sykesville 1.3 800 am 2/12 cocorahs
3 WSW Lineboro 1.2 1035 PM 2/11 trained spotter
4 NE Taneytown 1.0 700 am 2/11 cocorahs
3 NE Taneytown 1.0 700 am 2/11 cocorahs
... Charles County...
1 SW Dentsville 0.5 100 am 2/12 trained spotter
2 ESE Bryans Road MD 0.2 700 am 2/12 cocorahs
... Frederick County...
1 SSE Thurmont 1.0 830 am 2/12 cocorahs
3 NNW New Market 0.8 900 am 2/11 cocorahs
4 SSW Frederick 0.4 700 am 2/12 cocorahs
2 se Emmitsburg T 930 am 2/11 co-op observer
... Harford County...
1 N Jarrettsville 3.0 800 am 2/12 cocorahs
2 W Bel Air 2.0 700 am 2/12 cocorahs
3 NNE Kingsville 1.0 700 am 2/11 cocorahs
Conowingo dam 0.5 700 am 2/12 co-op observer
... Howard County...
2 SSE Sykesville 2.0 700 am 2/12 cocorahs
1 SSE Simpsonville 1.6 103 am 2/12 trained spotter
2 W Elkridge 1.0 700 am 2/11 cocorahs
3 NW Columbia 1.0 730 am 2/11 cocorahs
2 N Columbia 1.0 700 am 2/11 cocorahs
1 se Clarksville 0.9 800 am 2/11 cocorahs
1 E Columbia 0.3 700 am 2/11 cocorahs
... 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
Brighton dam 2.2 900 am 2/11 co-op observer
3 SSW Damascus 2.2 1000 PM 2/11 co-op observer
2 W Colesville 1.0 700 am 2/12 cocorahs
7 N Silver Spring 0.9 700 am 2/12 cocorahs
3 SW Gaithersburg 0.9 700 am 2/11 cocorahs
3 NE Gaithersburg 0.9 700 am 2/12 cocorahs
1 ESE Norbeck 0.8 700 am 2/12 cocorahs
1 se Olney 0.7 700 am 2/11 cocorahs
3 E Clarksburg 0.7 902 am 2/11 trained spotter
5 NNE Germantown 0.7 700 am 2/11 cocorahs
1 ESE Rossmoor 0.7 700 am 2/12 cocorahs
se Poolesville 0.5 800 am 2/11 cocorahs
1 SSE Colesville 0.5 1145 PM 2/11 this evening only
1 NNW Takoma Park 0.4 700 am 2/12 cocorahs
1 N White Oak 0.2 700 am 2/11 cocorahs
1 NE Wheaton-glenmon 0.2 700 am 2/11 cocorahs
... Prince Georges County...
7 ESE Brandywine 0.5 700 am 2/12 cocorahs
ESE Camp Springs 0.4 700 am 2/12 cocorahs
1 se Oxon Hill 0.3 530 am 2/12 co-op observer
1 W Oxon Hill 0.3 530 am 2/12 cocorahs
1 E Bowie 0.3 900 am 2/12 cocorahs
2 se Forest Heights 0.3 530 am 2/12 cocorahs
1 W Forestville 0.1 700 am 2/12 cocorahs
... St. Marys County...
1 NE Leonardtown 1.5 600 am 2/12 cocorahs
SW Park Hall 0.2 700 am 2/12 cocorahs
5 NE Mechanicsville 0.2 700 am 2/12 co-op observer
... Washington County...
3 NNE Smithsburg 1.6 700 am 2/11 cocorahs
1 WSW Cavetown 1.5 359 PM 2/11 trained spotter
2 ESE Williamsport 0.7 700 am 2/11 cocorahs
Williamsport 0.5 600 am 2/11 co-op observer
Virginia
... Albemarle County...
2 W Charlottesville T 800 am 2/12 co-op observer
... Arlington County...
Reagan National airp 0.2 1209 am 2/12 Airport
... City of fredercksbrg...
2 se Fredericksburg T 728 am 2/12 co-op observer
... City of Winchester...
2 S Winchester 1.0 345 am 2/11 trained spotter
... Clarke County...
ESE Berryville 0.7 800 am 2/11 cocorahs
1 NNW Berryville 0.6 800 am 2/11 cocorahs
... Culpeper County...
3 N Rixeyville 0.2 700 am 2/11 cocorahs
6 N Rixeyville 0.1 800 am 2/11 cocorahs
4 se Boston T 758 am 2/12 co-op observer
... Fairfax County...
1 NNE Herndon 0.8 645 am 2/12 NWS employee
3 NE Vienna 0.7 700 am 2/12 co-op observer
1 E Oakton 0.5 600 am 2/11 trained spotter
3 N Vienna 0.4 700 am 2/11 cocorahs
2 ESE Chantilly 0.4 1208 am 2/12 NWS employee
3 S Herndon 0.3 700 am 2/12 cocorahs
1 W Vienna 0.2 730 am 2/11 cocorahs
4 W Fairfax 0.2 700 am 2/11 cocorahs
2 SSE McLean 0.2 700 am 2/11 cocorahs
2 S McLean 0.1 700 am 2/11 cocorahs
... Fauquier County...
Marshall 0.8 845 am 2/11 trained spotter
3 SSW Broad Run 0.5 800 am 2/11 cocorahs
Warrenton 0.1 245 PM 2/11 NWS employee
... Frederick County...
N Winchester radio 1.4 700 am 2/11 co-op observer
9 NW Winchester 1.2 1000 am 2/11 cocorahs
5 NE Winchester 0.8 700 am 2/11 cocorahs
2 E Stephens City 0.6 700 am 2/11 cocorahs
se Middletown 0.6 800 am 2/11 cocorahs
2 ESE Stephens City 0.6 415 am 2/11 trained spotter
7 se Winchester 0.1 700 am 2/11 co-op observer
... Highland County...
1 SW Mill Gap 1.2 600 am 2/12 co-op observer
... 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
Sterling rcs 1.2 700 am 2/12 co-op observer
4 NNW Sterling 1.1 700 am 2/12 cocorahs
Countryside 1.1 631 am 2/12 NWS employee
Mount Weather 1.1 700 am 2/12 co-op observer
3 WSW Round Hill 0.9 745 am 2/12 cocorahs
Leesburg 0.6 300 am 2/11 public
Dulles international 0.6 235 PM 2/11 Airport
3 NNW Dulles interna 0.6 235 PM 2/11 NWS employee
3 NW Dulles internat 0.4 500 am 2/11 NWS office
... Madison County...
Haywood T 700 am 2/12 co-op observer
... Prince William County...
3 NNW Woolsey 1.1 859 am 2/11 trained spotter
Manassas T 730 am 2/12 co-op observer
... Rappahannock County...
Sperryville 0.2 500 am 2/12 co-op observer
... Shenandoah County...
2 NE Woodstock 0.6 700 am 2/11 co-op observer
4 N Strasburg 0.4 700 am 2/11 cocorahs
Edinburg 0.4 700 am 2/11 co-op observer
... Spotsylvania County...
5 SSW Fredericksburg 0.5 600 am 2/12 cocorahs
... Warren County...
2 N Linden 1.1 858 am 2/11 trained spotter
Front Royal 0.7 600 am 2/12 co-op observer
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
2 NW Falling Waters 1.1 700 am 2/12 cocorahs
1 W Martinsburg T 730 am 2/11 co-op observer
... Grant County...
Bayard 10.0 700 am 2/12 co-op observer
... Hampshire County...
2 ESE Springfield 0.1 615 am 2/11 cocorahs
... Hardy County...
2 se Lost River 0.7 800 am 2/11 co-op observer
... Jefferson County...
1 ENE Charles Town 1.0 147 PM 2/11 trained spotter
... Mineral County...
3 ESE Keyser 0.6 700 am 2/12 cocorahs
2 SSW Keyser 0.6 700 am 2/12 co-op observer
... Pendleton County...
6 WSW Cherry Grove 6.0 1130 am 2/12 drifts to 3 ft.
2 S Seneca Rocks 0.5 600 PM 2/11 public
Personal Weather Stations
Personal Weather Stations [Add your weather station!]
|
Location: Eckington Pl, NE, Washington, DC Updated: 5:54 PM EST |
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| Temperature: 29.8 °F | Dew Point: 13 °F | Humidity: 49% | Wind: North at 13.0 mph | Pressure: 30.08 in | Hourly Precipitation: 0.00 in | Windchill: 20 °F | Graphs |
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Location: Near Northeast - H Street Corridor, Washington, DC Updated: 5:50 PM EST |
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| Temperature: 30.1 °F | Dew Point: 11 °F | Humidity: 46% | Wind: West at 12.0 mph | Pressure: 30.00 in | Hourly Precipitation: 0.00 in | Windchill: 20 °F | Graphs |
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Location: DCNet DC Municipal Building Washington DC, Washington, DC Updated: 5:30 PM EST |
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| Temperature: 28 °F | Dew Point: 8 °F | Humidity: 41% | Wind: WNW at 15 mph | Pressure: - | Hourly Precipitation: 0.00 in | Windchill: 16 °F | Graphs |
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Location: DCNet Hoover Building Washington DC, Washington, DC Updated: 5:30 PM EST |
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| Temperature: 30 °F | Dew Point: 9 °F | Humidity: 40% | Wind: WNW at 14 mph | Pressure: - | Hourly Precipitation: 0.00 in | Windchill: 19 °F | Graphs |
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Location: SW Washington, Washington, DC Updated: 5:41 PM EST |
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| Temperature: 30.2 °F | Dew Point: 13 °F | Humidity: 50% | Wind: NW at 12.0 mph | Pressure: 30.07 in | Hourly Precipitation: 0.00 in | Windchill: 21 °F | Graphs |
|
Location: NOS_PORTS Washington, DC, Washington, DC Updated: 5:18 PM EST |
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| Temperature: 31 °F | Dew Point: - | Humidity: - | Wind: NW at 14 mph | Pressure: 30.07 in | Hourly Precipitation: 0.00 in | Windchill: 21 °F | Graphs |
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Location: VADOT Rt_66_@_Rosslyn, Arlington, VA Updated: 5:21 PM EST |
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| Temperature: 30 °F | Dew Point: 7 °F | Humidity: 38% | Wind: South at 10 mph | Pressure: - | Hourly Precipitation: 0.00 in | Windchill: 21 °F | Graphs |
|
Location: Ward Circle, Washington, DC Updated: 5:54 PM EST |
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| Temperature: 27.7 °F | Dew Point: 12 °F | Humidity: 51% | Wind: NW at 6.0 mph | Pressure: 30.08 in | Hourly Precipitation: 0.00 in | Windchill: 21 °F | Graphs |
|
Location: Palisades, Washington, DC Updated: 5:52 PM EST |
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| Temperature: 28.6 °F | Dew Point: 8 °F | Humidity: 41% | Wind: WSW at 4.0 mph | Pressure: - | Hourly Precipitation: 0.00 in | Windchill: 24 °F | Graphs |
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Location: Cherrydale, Arlington, VA Updated: 5:50 PM EST |
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| Temperature: 27.8 °F | Dew Point: 14 °F | Humidity: 56% | Wind: SW at 4.0 mph | Pressure: 30.07 in | Hourly Precipitation: 0.00 in | Windchill: 23 °F | Graphs |
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Location: Ashton Heights, Arlington, VA Updated: 5:45 PM EST |
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| Temperature: 28.9 °F | Dew Point: 17 °F | Humidity: 60% | Wind: NE at 6.0 mph | Pressure: 29.92 in | Hourly Precipitation: 0.00 in | Windchill: 23 °F | Graphs |
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Location: Elm & Larch, SOSCA, Takoma Park, MD Updated: 5:55 PM EST |
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| Temperature: 28.1 °F | Dew Point: 12 °F | Humidity: 51% | Wind: West at 3.0 mph | Pressure: 30.09 in | Hourly Precipitation: 0.00 in | Windchill: 28 °F | Graphs |
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Location: Ashton Heights, Arlington, VA Updated: 5:30 PM EST |
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| Temperature: 28.7 °F | Dew Point: 12 °F | Humidity: 48% | Wind: SW at 14.0 mph | Pressure: 30.07 in | Hourly Precipitation: 0.00 in | Windchill: 18 °F | Graphs |
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Location: Brookdale, Bethesda, MD Updated: 5:55 PM EST |
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| Temperature: 26.0 °F | Dew Point: 9 °F | Humidity: 48% | Wind: Calm | Pressure: 29.18 in | Hourly Precipitation: 0.00 in | Windchill: 26 °F | Graphs |
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Location: Riverdale Park, Riverdale, MD Updated: 5:55 PM EST |
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| Temperature: 28.8 °F | Dew Point: 11 °F | Humidity: 46% | Wind: NW at 11.0 mph | Pressure: 30.16 in | Hourly Precipitation: 0.00 in | Windchill: 19 °F | Graphs |
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Location: Bethesda, Bethesda, MD Updated: 5:55 PM EST |
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| Temperature: 29.0 °F | Dew Point: 17 °F | Humidity: 60% | Wind: Calm | Pressure: 29.83 in | Hourly Precipitation: 0.00 in | Windchill: 29 °F | Graphs |
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Location: Somerset, Chevy Chase, MD Updated: 5:55 PM EST |
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| Temperature: 28.1 °F | Dew Point: 12 °F | Humidity: 50% | Wind: WNW at 1.0 mph | Pressure: 30.13 in | Hourly Precipitation: 0.00 in | Windchill: 28 °F | Graphs |
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Location: Douglas Park, Arlington, VA Updated: 5:55 PM EST |
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| Temperature: 27.0 °F | Dew Point: 11 °F | Humidity: 51% | Wind: NNW at 6.0 mph | Pressure: 30.08 in | Hourly Precipitation: 0.00 in | Windchill: 20 °F | Graphs |
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Location: APRSWXNET Douglas Park VA US, Arlington, VA Updated: 5:33 PM EST |
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| Temperature: 28 °F | Dew Point: 12 °F | Humidity: 50% | Wind: West at 14 mph | Pressure: 30.07 in | Hourly Precipitation: 0.00 in | Windchill: 17 °F | Graphs |
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Location: Alexandria, VA, Alexandria, VA Updated: 5:40 PM EST |
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| Temperature: 30.1 °F | Dew Point: 13 °F | Humidity: 49% | Wind: NNW at 1.6 mph | Pressure: 29.98 in | Hourly Precipitation: 0.00 in | Windchill: 30 °F | Graphs |
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Location: Del Ray, Alexandria, VA Updated: 5:46 PM EST |
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| Temperature: 28.9 °F | Dew Point: 14 °F | Humidity: 54% | Wind: WSW at 4.0 mph | Pressure: 21.99 in | Hourly Precipitation: - | Windchill: 25 °F | Graphs |
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Location: Barcroft Neighborhood, Arlington, VA Updated: 5:55 PM EST |
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| Temperature: 28.1 °F | Dew Point: 11 °F | Humidity: 49% | Wind: West at 2.0 mph | Pressure: 30.12 in | Hourly Precipitation: 0.00 in | Windchill: 28 °F | Graphs |
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Location: DCNet Naval Research Laboratory Washington DC, Washington, DC Updated: 5:30 PM EST |
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| Temperature: 28 °F | Dew Point: 6 °F | Humidity: 39% | Wind: WNW at 14 mph | Pressure: - | Hourly Precipitation: 0.00 in | Windchill: 17 °F | Graphs |
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Location: Old Town North, Alexandria, VA Updated: 5:50 PM EST |
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| Temperature: 28.8 °F | Dew Point: 9 °F | Humidity: 43% | Wind: Calm | Pressure: 30.11 in | Hourly Precipitation: 0.00 in | Windchill: 29 °F | Graphs |
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Location: APRSWXNET Arlington VA US, Arlington, VA Updated: 5:09 PM EST |
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| Temperature: 30 °F | Dew Point: 13 °F | Humidity: 49% | Wind: NW at 5 mph | Pressure: 30.04 in | Hourly Precipitation: 0.00 in | Windchill: 25 °F | Graphs |
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Location: Arlington, Arlington, VA Updated: 5:12 PM EST |
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| Temperature: 29.5 °F | Dew Point: 13 °F | Humidity: 50% | Wind: NW at 6.0 mph | Pressure: 30.05 in | Hourly Precipitation: 0.00 in | Windchill: 23 °F | Graphs |
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Location: APRSWXNET Silver Spring MD US, Silver Spring, MD Updated: 5:32 PM EST |
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| Temperature: 28 °F | Dew Point: 12 °F | Humidity: 51% | Wind: NW at 2 mph | Pressure: 30.08 in | Hourly Precipitation: 0.00 in | Windchill: 28 °F | Graphs |
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Location: Arlington, VA Updated: 5:52 PM EST |
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| Temperature: 25.0 °F | Dew Point: 15 °F | Humidity: 66% | Wind: WNW at 6.0 mph | Pressure: 30.14 in | Hourly Precipitation: 0.00 in | Windchill: 18 °F | Graphs |
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Location: Episcopal High School, Alexandria, VA Updated: 5:55 PM EST |
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| Temperature: 28.2 °F | Dew Point: 7 °F | Humidity: 40% | Wind: WNW at 13.0 mph | Pressure: 30.03 in | Hourly Precipitation: 0.00 in | Windchill: 18 °F | Graphs |
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Location: MDDOT I-495 @ Connecticut Ave, Bethesda, MD Updated: 5:41 PM EST |
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| Temperature: 29 °F | Dew Point: 9 °F | Humidity: 43% | Wind: Calm | Pressure: - | Hourly Precipitation: 0.00 in | Windchill: 29 °F | Graphs |
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Location: Madison Manor, Arlington, VA Updated: 5:11 PM EST |
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| Temperature: 28.0 °F | Dew Point: 1 °F | Humidity: 32% | Wind: NW at 19.7 mph | Pressure: 30.13 in | Hourly Precipitation: 0.00 in | Windchill: 15 °F | Graphs |
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Location: Seminary Ridge - St Stephens & St. Agnes Upper Campus, Alexandria, VA Updated: 5:55 PM EST |
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| Temperature: 29.5 °F | Dew Point: 16 °F | Humidity: 58% | Wind: NNW at 6.0 mph | Pressure: 30.06 in | Hourly Precipitation: 0.00 in | Windchill: 23 °F | Graphs |
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Location: Langley Fork Park, McLean, VA Updated: 5:55 PM EST |
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| Temperature: 27.0 °F | Dew Point: 13 °F | Humidity: 54% | Wind: Calm | Pressure: 30.10 in | Hourly Precipitation: 0.00 in | Windchill: 27 °F | Graphs |
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Location: Camp Springs, MD, Camp Springs, MD Updated: 5:30 PM EST |
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| Temperature: 28.4 °F | Dew Point: 7 °F | Humidity: 40% | Wind: NW at 7.0 mph | Pressure: 29.90 in | Hourly Precipitation: 0.00 in | Windchill: 21 °F | Graphs |
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Location: Kensington, Kensington, MD Updated: 5:55 PM EST |
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| Temperature: 27.3 °F | Dew Point: 16 °F | Humidity: 50% | Wind: Calm | Pressure: 29.54 in | Hourly Precipitation: 0.00 in | Windchill: 27 °F | Graphs |
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Location: Falls Church, Falls Church, VA Updated: 5:55 PM EST |
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| Temperature: 28.5 °F | Dew Point: 16 °F | Humidity: 58% | Wind: WSW at 4.0 mph | Pressure: 30.00 in | Hourly Precipitation: 0.00 in | Windchill: 24 °F | Graphs |
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Location: APRSWXNET McLean VA US, McLean, VA Updated: 5:33 PM EST |
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| Temperature: 29 °F | Dew Point: 16 °F | Humidity: 57% | Wind: Calm | Pressure: 30.05 in | Hourly Precipitation: 0.00 in | Windchill: 29 °F | Graphs |
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MSN Maps of: |
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| Temp: | Dew Point: | Humidity | Wind | Pressure | Hr Precip | - | |
NWS Forecaster Discussion
Area forecast discussion...corrected National Weather Service Baltimore Maryland/Washington District of Columbia 246 PM EST sun Feb 12 2012 Synopsis... high pressure will build across the region tonight through Monday. Unsettled weather is expected Monday night through Tuesday as several upper level disturbances may bring light precipitation to the region. A cold front is expected on Thursday. && Near term /through Monday/... tight pressure gradient continues across the region originating from deep surface low in the Canadian maritime region coupled with high pressure over the lower MS valley. Winds will continue gusting this afternoon from the WNW-NW. As this surface low moves away...the gradient will gradually slacken overnight. Expecting skys to clear quickly by early evening. Winds will continue to stay up which will preclude a rapid drop after sunset. Used for min temperatures for tonight an equal blend of 12z gridded MOS...mav/met. Mins will be well below normal. Upslope snow conditions in the far western zones have eased. Mainly flurries noted in dot cameras and other web images. Kept flurries in the forecast for the far western zn ridge lines. For Monday...westerly winds and warmer temperatures expected under mostly sunny skies. && Short term /Monday night/... ridge of high pressure moves offshore Monday night as low pressure moves into the middle Mississippi River valley. Light southerly flow on the backside of the high center will help provide warmer overnight temperatures...with values close to normal. In addition to the southerly flow...increasing cloud cover with an upper level shortwave will hinder maximum radiational cooling. Some light wintry precipitation is possible...mainly west of the Blue Ridge as an upper level disturbance moves through the region. At this time...upper level and surface temperatures will be cold enough for snow. && Long term /Tuesday through Sunday/... zonal flow aloft will allow for another fast moving shortwave to move through the County warning forecast area Tuesday. Increasing cloud cover...and very light precipitation is possible across the region. High pressure briefly builds in for Wednesday night...but moves offshore by early Thursday. A cold front is expected to impact the area later on Thursday. High pressure builds in behind the cold front...but upslope precipitation on the western ridges may continue into Saturday. High pressure returns for Sunday. && Aviation /19z Sunday through Friday/... strong west-northwest winds will gradually diminish the rest of this PM into this evening as high pressure builds in from the west. Expect VFR conditions at all airports through Monday morning. Broken sky conditions will become scattered then clear with ceilings remaining around 4 to 5 k feet late this afternoon and tonight with any cloud cover. Winds are expected to become gusty from the west once again later Monday morning into Monday afternoon, but not nearly as strong as Sunday. Visibility will remain about 6 miles with no restrictions through Monday morning. Light precipitation is possible late Monday night into early Wednesday as several upper level disturbances move through the middle Atlantic. A cold front is expected on Thursday...brining more widespread precipitation and a wind shift to the northwest. && Marine... strong small craft conditions for the remainder afternoon with gusts to around 30 kts. Then as the pressure gradient eased towards evening winds will slacken. Will continue with Small Craft Advisory through Monday around noon...although northern portion of the tidal potomace could see wind gusts fall below Small Craft Advisory by middle morning. Small craft conditions are possible Thursday night into Friday as a cold front moves across the region. && Lwx watches/warnings/advisories... District of Columbia...none. Maryland...none. Virginia...none. WV...none. Marine...Small Craft Advisory until 1 PM EST Monday for anz530>543. && $$ Synopsis...nwl/smz near term...smz short term...nwl long term...nwl aviation...nwl/klw/smz marine...nwl/smz
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