Gaithersburg, MD

6:45 PM EST on February 11, 2012 (GMT -0500)
Elev: 466 ft
Lon: 77.2° W
Lat: 39.1° N
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Active Advisory: Wind Advisory (US Severe Weather) Active Notice: Public Information Statement
Tropical Weather: Tropical Cyclone Giovanna (South Indian Ocean) Tropical Cyclone Jasmine (Southern Pacific)
Weather Summary
Kari Kiefer
Weather Underground midday recap for Saturday, February 11, 2012.

Cold air poured into the Plains on Saturday, while snow showers developed in parts of the Northeast. A strong low pressure system that brought heavy rain to the Southern Plains and Southeast has advanced eastward and off the East Coast into the Atlantic Ocean. However, counter-clockwise flow around this system continued to push moisture into the Northeast, Great Lakes, and Ohio River Valley. In addition to cool air over the region, this allowed for snow showers to develop across Michigan and the Ohio River Valley. Snowfall accumulations ranged from 1 to 3 inches in most areas, with up to 5 inches at higher elevations of the Central Appalachians. Coastal regions remained slightly warmer, which maintained light rain showers from southern Maine through Virginia.

Behind this system, a dominant ridge of high pressure continued to build over the Plains. This system started to stretch eastward over the Mississippi Valley. Flow around this system pulled cold air in from central Canada and kept seasonable cool temperatures over the Central US. High temperatures only reached into the 30s in parts of northern Texas, while the Central and Northern Plains saw highs in the teens, with overnight lows in the negative teens.

Out West, cool conditions persisted with areas of wet weather as a trough of low pressure moved over the Pacific Northwest and into the Intermountain West and Great Basin. Rainfall totals and high elevation snow accumulation remained light. A few light rain showers extended into California as moist onshore flow persisted.
Weather Underground midday recap for Saturday, February 11, 2012.

Cold air poured into the Plains on Saturday, while snow showers developed in parts of the Northeast. A strong low pressure system that brought heavy rain to the Southern Plains and Southeast has advanced eastward and off the East Coast into the Atlantic Ocean. However, counter-clockwise flow around this system continued to push moisture into the Northeast, Great Lakes, and Ohio River Valley. In addition to cool air over the region, this allowed for snow showers to develop across Michigan and the Ohio River Valley. Snowfall accumulations ranged from 1 to 3 inches in most areas, with up to 5 inches at higher elevations of the Central Appalachians. Coastal regions remained slightly warmer, which maintained light rain showers from southern Maine through Virginia.

Behind this system, a dominant ridge of high pressure continued to build over the Plains. This system started to stretch eastward over the Mississippi Valley. Flow around this system pulled cold air in from central Canada and kept seasonable cool temperatures over the Central US. High temperatures only reached into the 30s in parts of northern Texas, while the Central and Northern Plains saw highs in the teens, with overnight lows in the negative teens.

Out West, cool conditions persisted with areas of wet weather as a trough of low pressure moved over the Pacific Northwest and into the Intermountain West and Great Basin. Rainfall totals and high elevation snow accumulation remained light. A few light rain showers extended into California as moist onshore flow persisted.
Weather Underground Broadcast Network
Gaithersburg Weather at a Glance
Updated 6:45 PM EST
Elevation
394 ft
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Now
Scattered Clouds
Scattered Clouds
Temperature
27.7 °F
Feels Like 28 °F
Wind(mph)
2.0
Sunrise / Set
7:05 AM
5:40 PM
Moon
Waning Gibbous
Tonight
Partly Cloudy 20 °F
Partly Cloudy
Tomorrow
Partly Cloudy 34 °F
Partly Cloudy
Tomorrow Night
Clear 20 °F
Clear
Monday
Clear 40 | 27 °F
Clear
Tuesday
Chance of Rain 41 | 32 °F
Chance of Rain
20% chance of precipitation
Wednesday
Mostly Cloudy 49 | 31 °F
Mostly Cloudy
Tomorrow is forecast to be Cooler than today.
Conditions
Pressure
29.80 in
Visibility
10.0 miles
Clouds
Few 4500 ft
Scattered Clouds 9500 ft
Moisture
Humidity
59%
Rainfall
0.18 in
Snow Depth
Not available.
METAR
METAR KGAI 112335Z AUTO 33023G31KT 10SM FEW045 SCT095 M03/M12 A2977 RMK AO1
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Windchill
28 °F
Dew Point
15 °F
Wind
Speed / Dir
2.0 mph from ENE
Wind Gust
8.0 mph
Health
UV
0 out of 16
Pollen
.40 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
Local Activity
View Flu Map
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Regional Forecast for Montgomery
Tonight
nt_chancesnow Mostly cloudy this evening...then becoming partly cloudy. A 50 percent chance of snow showers. Windy with lows around 20. Northwest winds 20 to 30 mph with gusts up to 50 mph.
Sunday
partlycloudy Mostly sunny and brisk. Highs in the mid 30s. Northwest winds 15 to 25 mph with gusts up to 35 mph.
Sunday Night
nt_sunny Mostly clear. Lows in the lower 20s. West winds 15 to 20 mph. Gusts up to 35 mph in the evening.
Monday
sunny Sunny. Highs in the lower 40s. West winds 10 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy in the evening...then becoming mostly cloudy. Lows in the upper 20s. West winds 5 to 10 mph...becoming northwest after midnight.
Tuesday
cloudy Cloudy. Highs in the lower 40s.
Tuesday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Wednesday
cloudy Mostly cloudy. Highs in the upper 40s.
Wednesday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Thursday
chancesnow Mostly cloudy with a chance of snow showers. Highs in the upper 40s. Chance of snow 30 percent.
Thursday Night
nt_snow Mostly cloudy with a chance of rain or snow showers. Lows in the upper 30s. Chance of precipitation 40 percent.
Friday
partlysunny Partly sunny. Highs in the upper 40s.
Friday Night
nt_sunny Mostly clear. Lows in the lower 30s.
Saturday
partlycloudy Mostly sunny. Highs in the upper 40s.
Source: NWS at 6:30 PM EST on February 11, 2012
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Nowcast
Wind Advisory in effect until 7 am EST Sunday...
Forecast
View Calendar 7-Day Weather Forecast for 20877
Saturday, 11
Chance of Snow
41 | 20 °F
Chance of Snow
Chance of
Precipitation
100%
Sunday, 12
Partly Cloudy
34 | 20 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 13
Clear
40 | 27 °F
Clear
Chance of
Precipitation
0%
Tuesday, 14
Chance of Rain
41 | 32 °F
Chance of Rain
Chance of
Precipitation
20%
Wednesday, 15
Mostly Cloudy
49 | 31 °F
Mostly Cloudy
Chance of
Precipitation
10%
Thursday, 16
Chance Rain
49 | 38 °F
Chance Rain
Chance of
Precipitation
20%
Friday, 17
Chance of Rain
49 | 31 °F
Chance of Rain
Chance of
Precipitation
20%
Saturday, 18
Partly Cloudy
49 | NA
Partly Cloudy
Chance of
Precipitation
10%
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Tonight
nt_chancesnow Mostly cloudy this evening...then becoming partly cloudy. A 50 percent chance of snow showers. Windy with lows around 20. Northwest winds 20 to 30 mph with gusts up to 50 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 33 | 29 37 | 28 32 | 19 26 | 8
Wind 2 mph NNW 8 mph NW 21 mph WNW 22 mph NW
Humidity 83% 70% 59% 47%
Chance of Precip. 100% 100% 100% 10%
Cloud Cover 100% 100% 70% 70%
Conditions Snow Overcast Snow Showers Mostly Cloudy
Sunrise & Sunset
7:05 AM
5:40 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Sunday
partlycloudy Mostly sunny and brisk. Highs in the mid 30s. Northwest winds 15 to 25 mph with gusts up to 35 mph.
Sunday Night
nt_sunny Mostly clear. Lows in the lower 20s. West winds 15 to 20 mph. Gusts up to 35 mph in the evening.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 22 | 5 30 | 7 30 | 10 25 | 13
Wind 16 mph NW 20 mph WNW 16 mph WNW 10 mph WNW
Humidity 48% 37% 43% 61%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 26% 35% 25% 15%
Conditions Partly Cloudy Partly Cloudy Clear Clear
Sunrise & Sunset
7:04 AM
5:41 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Monday
sunny Sunny. Highs in the lower 40s. West winds 10 to 15 mph.
Monday Night
nt_partlycloudy Partly cloudy in the evening...then becoming mostly cloudy. Lows in the upper 20s. West winds 5 to 10 mph...becoming northwest after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 23 | 13 36 | 13 37 | 16 31 | 17
Wind 6 mph West 12 mph WNW 7 mph West 3 mph West
Humidity 63% 40% 41% 54%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 11% 7% 7% 42%
Conditions Clear Clear Clear Partly Cloudy
Sunrise & Sunset
7:03 AM
5:43 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Tuesday
cloudy Cloudy. Highs in the lower 40s.
Tuesday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 30 | 20 39 | 26 39 | 30 36 | 29
Wind 0 mph NNW 4 mph South 4 mph South 1 mph South
Humidity 66% 59% 71% 78%
Chance of Precip. 10% 20% 20% 20%
Cloud Cover 73% 93% 86% 73%
Conditions Mostly Cloudy Overcast Chance of Rain Mostly Cloudy
Sunrise & Sunset
7:02 AM
5:44 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Wednesday
cloudy Mostly cloudy. Highs in the upper 40s.
Wednesday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 29 45 | 33 42 | 34 37 | 32
Wind 0 mph NE 3 mph North 2 mph NNW 1 mph NNE
Humidity 81% 64% 73% 84%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 85% 76% 76% 66%
Conditions Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy
Sunrise & Sunset
7:00 AM
5:45 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Thursday
chancesnow Mostly cloudy with a chance of snow showers. Highs in the upper 40s. Chance of snow 30 percent.
Thursday Night
nt_snow Mostly cloudy with a chance of rain or snow showers. Lows in the upper 30s. Chance of precipitation 40 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 29 45 | 35 45 | 39 42 | 41
Wind 2 mph ENE 5 mph ESE 6 mph South 4 mph South
Humidity 84% 68% 83% 83%
Chance of Precip. 10% 10% 20% 20%
Cloud Cover 34% 54% 92% 86%
Conditions Partly Cloudy Chance of Snow Chance of Rain Chance of Rain
Sunrise & Sunset
7:00 AM
5:45 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Friday
partlysunny Partly sunny. Highs in the upper 40s.
Friday Night
nt_sunny Mostly clear. Lows in the lower 30s.
Saturday
partlycloudy Mostly sunny. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 40 | 37 46 | 30 42 | 27 37 | 25
Wind 6 mph SW 9 mph WNW 7 mph WNW 4 mph WNW
Humidity 88% 54% 54% 63%
Chance of Precip. 30% 30% 30% 30%
Cloud Cover 77% 50% 50% 23%
Conditions Chance of Rain Chance of Rain Chance of Rain Clear
Sunrise & Sunset
7:00 AM
5:45 PM
Source: NWS at 6:30 PM EST on February 11, 2012
Regional Forecast for Montgomery
Saturday
partlycloudy Mostly sunny. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 25 45 | 25 44 | 27 37 | 25
Wind 4 mph WNW 7 mph WNW 5 mph WNW 4 mph WNW
Humidity 66% 44% 53% 63%
Chance of Precip. 10% 10% 10% 30%
Cloud Cover 23% 25% 34% 23%
Conditions Clear Clear Partly Cloudy Clear
Sunrise & Sunset
7:00 AM
5:45 PM
BestForecast (what's this?)
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
February 11, 2012 Max Temp Min Temp
Normal (KIAD) 44 °F 23 °F
Record (KIAD) 71 °F (2009) -7 °F (1979)
Yesterday 45 °F 29 °F
Yesterday's Heating Degree Days: 28
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Coastal Water Temperatures
Place Temperature
Washington, DC 43.0 °F
Baltimore, MD 43.0 °F
Solomons Island, MD 43.0 °F
Marine Forecast
Astronomy
Feb. 11, 2012 Rise Set
Actual Time 7:05 AM EST 5:40 PM EST
Civil Twilight 6:38 AM EST 6:08 PM EST
Nautical Twilight 6:06 AM EST 6:39 PM EST
Astronomical Twilight 5:35 AM EST 7:11 PM EST
Moon 10:23 PM EST 8:49 AM EST
Length Of Visible Light 11h 30m
Length of Day
10h 35m
Tomorrow will be 2m 18s longer.
Waning Gibbous, 79% of the Moon is Illuminated
Today
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Visit Astronomy
Today's Extremes
State Highs State Lows
45 °F
Salisbury
44 °F
Patuxent River
43 °F
Ocean City
42 °F
Maryland Science Center
41 °F
Baltimore
25 °F
Hagerstown
26 °F
Gaithersburg
30 °F
Baltimore
32 °F
Easton
32 °F
Baltimore Martin
Source: NWS
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Aviation
City Temp. Conditions Updated
Gaithersburg 27 °F Scattered Clouds 6:35 PM EST
College Park This station is not reporting.
Dulles Airport 30 °F Mostly Cloudy 5:52 PM EST
Leesburg 28 °F Scattered Clouds 6:35 PM EST
View all Aviation Tools
Flight To ETA Status
VRD84
San Francisco, CA 		KIAD 06:40PM On Time
UAL337
Chicago, IL 		KIAD 07:01PM On Time
JIA2460
Charlotte, NC 		KIAD 07:02PM On Time
JBU312
Fort Lauderdale, FL 		KIAD 07:02PM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (KGAI)
Wind Speed: 23.0 kts.
Wind Dir: 66° (ENE)
Ceiling: Unlimited

METAR KGAI 112335Z AUTO 33023G31KT 10SM FEW045 SCT095 M03/M12 A2977 RMK AO1

View all Reports & Maps
Nearby Events
Event Date Forecast
The Elephant Man 8:00 PM EST 2012-02-11 Chance of Snow, 30°F
Laser Tag 8:00 PM EST 2012-02-11 Chance of Snow, 30°F
Test Event #1 8:00 PM EST 2012-02-11 Chance of Snow, 30°F
Leif Ove Andsnes 7:00 PM EST 2012-02-12 Clear, 28°F
Yasmin Levy 8:00 PM EST 2012-02-14 Overcast, 34°F
TD Bank Speed Networking at Montgomery Community Media 7:00 AM EST 2012-02-14 Mostly Cloudy, 30°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Average High 71° F/ 21° C
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Event Date Forecast
AT&T Pebble Beach National Pro-Am 8:30 AM PST on February 12, 2012 Mostly Cloudy, 45 °F
Northern Trust Open 8:30 AM PST on February 16, 2012 Clear, 63 °F
AT&T National 8:30 AM EDT on June 28, 2012 Average High 86° F/ 29° C
AT&T National 8:30 AM EDT on June 29, 2012 Average High 87° F/ 30° C
View all Sports Weather
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
MDDOT I-270 @ I-370, Gaithersburg, MD 28 °F 18 °F 7 °F 40% WSW  at  11 mph 0.00 in / hr 449 ft 6:30 PM EST MADIS
Muddy Branch Park, Gaithersburg, MD 27.7 °F 28 °F 15 °F 59% ENE  at  2.0 mph 0.00 in / hr 394 ft 6:45 PM EST Rapid Fire  
Kentlands, Gaithersburg, MD 28.0 °F 28 °F 14 °F 54% South  at  2.0 mph 0.00 in / hr 380 ft 6:45 PM EST Rapid Fire  
Avalon at Traville, North Potomac, MD 28.1 °F 21 °F 14 °F 54% WSW  at  6.3 mph 0.00 in / hr 422 ft 6:45 PM EST Rapid Fire  
Woodley Gardens, Rockville, MD 27.8 °F 20 °F 10 °F 47% WSW  at  8.0 mph 0.00 in / hr 451 ft 6:40 PM EST Normal
Montgomery Village, MD 29.1 °F 29 °F 8 °F 41% North  at  - - / hr 350 ft 6:45 PM EST Rapid Fire
Gaithersburg, MD 27.3 °F 18 °F 13 °F 56% SSW  at  10.0 mph 0.00 in / hr 467 ft 6:35 PM EST Normal  
Longhorn, Gaithersburg, MD 27.0 °F 17 °F 10 °F 48% West  at  11.0 mph 0.00 in / hr 432 ft 6:45 PM EST Normal
Cloppers Mill East, Germantown, MD 27.9 °F 20 °F 13 °F 53% WNW  at  7.8 mph 0.00 in / hr 315 ft 6:45 PM EST Rapid Fire
Potomac Woods, Rockville, MD 27.0 °F 27 °F 7 °F 42% West  at  0.0 mph 0.00 in / hr 453 ft 6:45 PM EST Rapid Fire  
Flower Valley, Rockville, MD 28.8 °F 25 °F 15 °F 57% NW  at  3.8 mph 0.00 in / hr 347 ft 6:42 PM EST Normal  
Manor Ridge, Gaithersburg, MD 26.2 °F 26 °F 13 °F 57% SW  at  0.0 mph 0.00 in / hr 575 ft 6:45 PM EST Rapid Fire
Cherrywood, Olney, MD 27.7 °F 14 °F 15 °F 58% NNW  at  22.0 mph 0.00 in / hr 522 ft 6:41 PM EST Normal  
Laytonsville, MD 26.3 °F 11 °F 11 °F 52% WNW  at  27.0 mph 0.00 in / hr 600 ft 6:42 PM EST Normal  
North Germantown, Germantown, MD 26.8 °F 19 °F 9 °F 46% West  at  7.2 mph 0.00 in / hr 439 ft 6:45 PM EST Rapid Fire
The Vistas, Boyds, MD 27.0 °F 18 °F 12 °F 52% NW  at  10.0 mph 0.00 in / hr 460 ft 6:45 PM EST Rapid Fire
APRSWXNET Bethesda MD , Washington, DC 29 °F 22 °F 13 °F 50% NW  at  7 mph 0.00 in / hr 403 ft 6:18 PM EST MADIS
Gateway Center, Clarksburg, MD 25.9 °F 19 °F 12 °F 55% NNW  at  6.0 mph 0.00 in / hr 583 ft 6:43 PM EST Normal  
Park Ridge, Clarksburg, MD 26.6 °F 15 °F 14 °F 58% NW  at  13.4 mph - / hr 623 ft 6:40 PM EST Normal  
Cedar Ridge, Laytonsville, MD 26.8 °F 16 °F 14 °F 58% ENE  at  12.0 mph 0.00 in / hr 620 ft 6:45 PM EST Normal  
Kensington, Kensington, MD 29.1 °F 25 °F 18 °F 52% South  at  3.8 mph 0.00 in / hr 381 ft 6:45 PM EST Normal  
APRSWXNET Great Falls V, Great Falls, VA 29 °F 23 °F 11 °F 46% NW  at  6 mph 0.00 in / hr 296 ft 6:33 PM EST MADIS
Wheaton, Silver Spring, MD 29.3 °F 22 °F 18 °F 62% NNW  at  6.9 mph 0.00 in / hr 350 ft 6:45 PM EST Rapid Fire  
APRSWXNET Great Falls VA , Great Falls, VA 27 °F 27 °F 11 °F 51% North  at  - 0.00 in / hr 380 ft 6:19 PM EST MADIS
Triadelphia Reservoir, Brookeville, MD 27.6 °F 21 °F 13 °F 53% WSW  at  6.0 mph 0.00 in / hr 100 ft 6:32 PM EST Normal
MDDOT I-495 @ Connecticut Ave, Bethesda, MD 30 °F 30 °F 10 °F 43% SSW  at  0 mph 0.00 in / hr 230 ft 6:31 PM EST MADIS
North Springbrook, Colesville, MD 28.0 °F 28 °F 14 °F 55% WNW  at  0.0 mph 0.00 in / hr 315 ft 6:41 PM EST Rapid Fire  
Damascus Valley Park, Damascus, MD 26.6 °F 27 °F 17 °F 66% SSE  at  1.1 mph 0.00 in / hr 764 ft 6:40 PM EST Rapid Fire  
Kemp Mill, Silver Spring, MD 28.9 °F 23 °F 14 °F 52% NW  at  5.4 mph 0.00 in / hr 270 ft 6:44 PM EST Rapid Fire  
Hickory Creek, Great Falls, VA 27.8 °F 15 °F 11 °F 48% WNW  at  17.0 mph 0.00 in / hr 350 ft 6:45 PM EST Rapid Fire
Kemp Mill/Silver Spring, Silver Spring, MD 28.7 °F 23 °F 15 °F 55% NNW  at  5.0 mph 0.00 in / hr 400 ft 6:45 PM EST Rapid Fire
APRSWXNET Great Falls VA , Sterling, VA 28 °F 28 °F 16 °F 60% WNW  at  3 mph 0.00 in / hr 321 ft 6:06 PM EST MADIS
APRSWXNET Silver Spring MD , Silver Spring, MD 30 °F 30 °F 15 °F 54% West  at  3 mph 0.00 in / hr 347 ft 6:14 PM EST MADIS
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Wind Advisory
Mobile & Email Alerts Statement as of 5:34 PM EST on February 11, 2012

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

* timing... tonight. The highest gusts are likely this evening.

* Winds... northwest 25 to 35 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.





Public Information Statement
Mobile & Email Alerts Statement as of 6:03 PM EST on February 11, 2012

The following are unofficial observations taken during the past 24
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
   Frostburg 0.5 941 PM 2/10 trained spotter

... 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 1.8 851 am 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...
   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...
   5 N Laytonsville 2.0 710 am 2/11 broadcast media
   2 WSW Damascus 0.9 155 am 2/11 co-op observer
   3 E Clarksburg 0.7 902 am 2/11 trained spotter

Virginia

... Arlington County...
   Reagan National airp T 100 PM 2/11 Airport

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

... Clarke County...
   1 NNW Berryville 0.5 830 am 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

... 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

... Loudoun County...
   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 3.5 145 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 3.0 1000 am 2/11 trained spotter
   2 S Seneca Rocks 0.5 600 PM 2/11 public


**********************24 hour snowfall**********************

Location 24 hour time/date comments
                     snowfall of
                     /inches/ measurement

Maryland

... Allegany County...
   Frostburg 0.8 700 am 2/11 co-op observer
   1 SSE Cresaptown-Bel 0.2 700 am 2/11 cocorahs
   1 S Cumberland T 700 am 2/11 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 2/11 co-op observer
   2 W Severn 1.0 700 am 2/11 cocorahs
   BWI Airport 0.5 700 am 2/11 Airport
   3 E Laurel 0.5 700 am 2/11 cocorahs
   3 ESE Pasadena 0.5 800 am 2/11 cocorahs
   2 ENE Deale 0.4 700 am 2/11 cocorahs
   2 SSW Severn 0.3 900 am 2/11 cocorahs

... Baltimore County...
   NE Reisterstown 1.1 700 am 2/11 cocorahs
   1 SW Long Green 1.0 700 am 2/11 cocorahs
   1 SW Towson 1.0 830 am 2/11 cocorahs
   2 WNW Catonsville 1.0 700 am 2/11 cocorahs
   4 N Cockeysville 0.9 900 am 2/11 cocorahs
   1 SW Jacksonville 0.8 800 am 2/11 cocorahs
   1 E Kingsville 0.4 700 am 2/11 cocorahs

... Calvert County...
   6 E Marlton 0.2 800 am 2/11 cocorahs

... Carroll County...
   se Mount Airy 1.6 700 am 2/11 cocorahs
   1 W Westminster 1.3 700 am 2/11 cocorahs
   4 NE Taneytown 1.0 700 am 2/11 cocorahs
   3 NW Sykesville 1.0 730 am 2/11 cocorahs
   3 NE Taneytown 1.0 700 am 2/11 cocorahs

... Frederick County...
   3 NNW New Market 0.8 900 am 2/11 cocorahs
   1 SSE Thurmont 0.5 700 am 2/11 cocorahs
   4 SSW Frederick 0.3 700 am 2/11 cocorahs
   2 se Emmitsburg T 930 am 2/11 co-op observer

... Harford County...
   1 N Jarrettsville 2.0 800 am 2/11 cocorahs
   3 NNE Kingsville 1.0 700 am 2/11 cocorahs
   2 W Bel Air 1.0 730 am 2/11 cocorahs

... Howard County...
   2 SSE Sykesville 1.8 700 am 2/11 cocorahs
   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...
   Brighton dam 2.2 900 am 2/11 co-op observer
   3 SW Gaithersburg 0.9 700 am 2/11 cocorahs
   3 NE Gaithersburg 0.8 700 am 2/11 cocorahs
   1 se Olney 0.7 700 am 2/11 cocorahs
   2 W Colesville 0.7 715 am 2/11 cocorahs
   5 NNE Germantown 0.7 700 am 2/11 cocorahs
   1 ESE Rossmoor 0.5 700 am 2/11 cocorahs
   1 ESE Norbeck 0.4 700 am 2/11 cocorahs
   7 N Silver Spring 0.4 700 am 2/11 cocorahs
   1 NNW Takoma Park 0.3 730 am 2/11 cocorahs
   1 N White Oak 0.2 700 am 2/11 cocorahs
   1 NE Wheaton-glenmon 0.2 700 am 2/11 cocorahs
   3 SSW Damascus T 1000 PM 2/10 co-op observer

... Prince Georges County...
   7 ESE Brandywine 0.2 800 am 2/11 cocorahs
   1 E Bowie 0.2 800 am 2/11 cocorahs
   ESE Camp Springs 0.2 800 am 2/11 cocorahs
   1 se Oxon Hill 0.1 745 am 2/11 co-op observer
   1 W Oxon Hill 0.1 745 am 2/11 cocorahs
   2 se Forest Heights 0.1 745 am 2/11 cocorahs

... St. Marys County...
   5 NE Mechanicsville T 700 am 2/11 co-op observer

... Washington County...
   3 NNE Smithsburg 1.6 700 am 2/11 cocorahs
   2 ESE Williamsport 0.7 700 am 2/11 cocorahs
   Williamsport 0.5 600 am 2/11 co-op observer

Virginia

... Arlington County...
   Reagan National airp T 652 am 2/11 Airport

... 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

... Fairfax County...
   3 NE Vienna 0.5 700 am 2/11 co-op observer
   3 N Vienna 0.4 700 am 2/11 cocorahs
   1 W Vienna 0.2 730 am 2/11 cocorahs
   3 S Herndon 0.2 700 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

... 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
   7 se Winchester 0.1 700 am 2/11 co-op observer

... Highland County...
   1 SW Mill Gap 1.0 530 am 2/11 co-op observer

... Loudoun County...
   Mount Weather 1.0 700 am 2/11 co-op observer
   4 NNW Sterling 0.7 700 am 2/11 cocorahs
   3 WSW Round Hill 0.7 800 am 2/11 cocorahs
   Dulles international 0.4 700 am 2/11 Airport
   Sterling rcs 0.4 700 am 2/11 co-op observer

... Madison County...
   Haywood T 700 am 2/11 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

... Warren County...
   Front Royal 0.5 600 am 2/11 co-op observer

West Virginia

... Berkeley County...
   2 NW Falling Waters 1.0 700 am 2/11 cocorahs
   1 WNW Bunker Hill 1.0 700 am 2/11 cocorahs
   1 W Martinsburg T 730 am 2/11 co-op observer

... Grant County...
   Bayard 1.5 700 am 2/11 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

... Mineral County...
   3 ESE Keyser 0.5 700 am 2/11 cocorahs
   2 SSW Keyser 0.3 700 am 2/11 co-op observer


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

Location Max wind time/date comments
                        gust of
                         mph measurement

Maryland

... Frederick County...
   2 SW Flint 48 422 PM 2/11 AWOS

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

Virginia

... Arlington County...
   1 S Reagan National 44 307 PM 2/11 ASOS

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

West Virginia

... Jefferson County...
   Shepherdstown 35 140 PM 2/11 trained spotter


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