Manassas Regional-Davis, VA

1:30 PM EDT on May 21, 2013 (GMT -0400)
Elev: 190 ft
Lon: 77.5° W
Lat: 38.7° N
Source
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Global: Violent Tornado Causes Catastrophic Damage in Moore, Oklahoma
News
Weather Imagery Reveals Oklahoma Tornado
May 21, 2013
The Moore, Oklahoma tornado showed up vividly on satellite and radar.
Crews Race to Find Survivors of Oklahoma Twister
May 21, 2013
The search and rescue efforts are ongoing in Moore, Okla. after a massive tornado levelled the town and local schools.
PTSD Risk after the Oklahoma Tornado
May 21, 2013
In the wake of Mondays devastating tornado that ravaged the town of Moore, Okla., survivors are likely to feel incredible shock and numbness.
Massive Tornado Leaves Small Hospital 'Pretty Much Destroyed'
May 21, 2013
Officials say a tornado hit a small hospital in suburban Oklahoma City, but all the 30 patients inside survived.
Obama: 'Americans From Every Corner of This Country Will Be With Them'
May 21, 2013
Obama has declared a major disaster in Oklahoma, ordering federal aid to supplement state and local recovery efforts. The president also spoke Monday with Oklahoma Gov. Mary Fallin and Rep. Tom Cole, whose home is in the heavily damaged town of Moore.
Why Don't More Homes in Oklahoma Have Basements?
May 21, 2013
The answer lies in the level of the water table and the soil texture in Oklahoma and in states across the Plains.
Photos: Deadly Tornado Outbreak Strikes Plains
May 21, 2013
A tornado outbreak struck the Plains states on May 19, 2013, leaving widespread damage in its wake.
Children and the Tornado: Helping Kids Cope
May 21, 2013
Any time children are involved in a catastrophe, emotional reactions among survivors and across the nation are particularly strong.
Recap: Tornadoes Rake Oklahoma, Kansas, Iowa
May 21, 2013
The weather imagery, video and recap from tornadoes in the Plains on May 19, 2013.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
'I Expected Chaos:' Scenes from Okla. School
May 21, 2013
A photographer who was among the first to arrive at an Oklahoma Elementary School after a tornado destroyed it, describes the heart-wrenching scene.
A Timeline of Deadly Events in Moore, Okla.
May 21, 2013
Check out this comprehensive timeline of the events that transpired in Moore, Okla.
In Tornado's Wake, Worried Parents Seek Out Kids
May 21, 2013
A desperate search was underway by parents looking to find children after the massive tornado.
Moore Already at Work on Recovery, Says Mayor
May 21, 2013
Glenn Lewis was the mayor of Moore, Okla., when the strongest tornado on record whipped the city in 1999, and he says the most recent storm won't deter the community from rebuilding.
Moore Survivor Finds Dog Buried Alive
May 21, 2013
Watch as a tornado survivor is interrupted in the middle of interview by a little dog digging out of rubble.
Oklahoma Tornado: How to Help
May 21, 2013
There are several agencies asking for donations to help those hit hard by the Oklahoma tornadoes.
Multiple Children Dead at Okla. School
May 21, 2013
More than a dozen children are dead in the devastating Moore, Okla. tornado.
Twitter Responds With Prayers for Oklahoma Tornado Victims
May 21, 2013
Twitter responds to the devastation brought by tornadoes Monday in suburban Oklahoma City, offering condolences and prayers for the victims and survivors.
In Their Words: The Oklahoma Tornado Tragedy
May 21, 2013
Our reporters were among the first national media to report from Moore, Okla. shortly after a powerful tornado decimated the town. These are their thoughts as they report from the scene.
Obama Declares Major Disaster in Oklahoma
May 21, 2013
President Barack Obama has declared a major disaster in Oklahoma as the state recovers from a massive tornado that ripped through the Oklahoma City suburbs Monday, killing dozens and flattening entire neighborhoods.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground Forecast for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather is expected to fire up again across the nation's mid-section again on Tuesday.

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
Weather Underground Forecast for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather is expected to fire up again across the nation's mid-section again on Tuesday.

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
More News Articles

Manassas Regional-Davis Weather at a Glance

Updated 12:50 PM EDT
Weather Station
Manassas (KHEF)
Elevation
190 ft
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Now
Scattered Clouds
Scattered Clouds
Temperature
79 °F
Feels Like 79 °F
Wind(mph)
7
Sunrise / Set
5:53 AM
8:20 PM
Moon
Waxing Gibbous
Today
Thunderstorm 88 °F
Thunderstorm
20% chance of precipitation
Tonight
Partly Cloudy 66 °F
Partly Cloudy
20% chance of precipitation
Tomorrow
Chance of a Thunderstorm 86 | 66 °F
Chance of T-storms
30% chance of precipitation
Thursday
Chance of a Thunderstorm 81 | 52 °F
Chance of T-storms
50% chance of precipitation
Friday
Chance of Rain 68 | 46 °F
Chance of Rain
40% chance of precipitation
Saturday
Partly Cloudy 72 | 46 °F
Partly Cloudy
Today is forecast to be Warmer than yesterday.
Conditions
Pressure
29.98 in
Visibility
10.0 miles
Clouds
Scattered Clouds 2200 ft
Moisture
Humidity
74%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KHEF 211650Z 18006KT 10SM SCT022 26/21 A2998
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
79 °F
68,68,68,68,68,68,68,68,70,70,70,73,75
Dew Point
70 °F
Wind
Speed / Dir
7 mph from South
Wind Gust
Health
UV
9 out of 16
Pollen
8.10 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Moderate
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. Fog early. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Tuesday Night
nt_partlycloudy Partly cloudy with thunderstorms and rain showers. Fog overnight. Low of 66F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Wednesday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. Fog early. High of 86F. Winds from the SSW at 5 to 20 mph. Chance of rain 30%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. Low of 66F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.
Thursday
chancetstorms Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 81F. Winds from the South at 10 to 15 mph. Chance of rain 50%.
Thursday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and rain in the evening, then mostly cloudy. Low of 52F. Winds from the SSW at 5 to 10 mph shifting to the West after midnight. Chance of rain 30%.
Friday
chancerain Partly cloudy with a chance of rain. High of 68F. Winds from the NW at 10 to 15 mph. Chance of rain 40%.
Friday Night
nt_partlycloudy Partly cloudy. Low of 46F. Breezy. Winds from the NW at 15 to 20 mph.
Saturday
partlycloudy Partly cloudy. High of 72F. Breezy. Winds from the NNW at 15 to 20 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 46F. Winds from the NW at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy. High of 72F. Winds from the NW at 5 to 10 mph.
Sunday Night
nt_partlycloudy Clear. Low of 50F. Winds less than 5 mph.
Monday
partlycloudy Partly cloudy. High of 73F. Winds less than 5 mph.
Monday Night
nt_clear Clear. Low of 54F. Winds less than 5 mph.
Tuesday
chancerain Partly cloudy with a chance of rain. High of 75F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.
Tuesday Night
nt_partlycloudy Partly cloudy with a chance of rain. Fog overnight. Low of 59F. Winds less than 5 mph. Chance of rain 20%.
Wednesday
mostlycloudy Mostly cloudy. High of 81F. Winds less than 5 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 64F. Winds less than 5 mph.
Thursday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 66F. Winds less than 5 mph.
Friday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Low of 66F. Winds less than 5 mph.
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Weather Forecast for Manassas Regional-Davis VA

View Calendar 10-Day Forecast for station KHEF

Tuesday, 21
Thunderstorm
88 | 66 °F
Thunderstorm
Chance of
Precipitation
20%
Wednesday, 22
Chance of a Thunderstorm
86 | 66 °F
Chance of T-storms
Chance of
Precipitation
30%
Thursday, 23
Chance of a Thunderstorm
81 | 52 °F
Chance of T-storms
Chance of
Precipitation
50%
Friday, 24
Chance of Rain
68 | 46 °F
Chance of Rain
Chance of
Precipitation
40%
Saturday, 25
Partly Cloudy
72 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 26
Partly Cloudy
72 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 27
Partly Cloudy
73 | 54 °F
Partly Cloudy
Chance of
Precipitation
0%
Tuesday, 28
Chance of Rain
75 | 59 °F
Chance of Rain
Chance of
Precipitation
40%
Wednesday, 29
Mostly Cloudy
81 | 64 °F
Mostly Cloudy
Chance of
Precipitation
0%
Thursday, 30
Partly Cloudy
86 | 66 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. Fog early. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Tuesday Night
nt_partlycloudy Partly cloudy with thunderstorms and rain showers. Fog overnight. Low of 66F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 67 | 65 79 | 70 82 | 69 73 | 67
Wind 3 mph SSW 6 mph South 8 mph South 6 mph SSW
Humidity 92% 72% 62% 83%
Chance of Precip. 10% 10% 20% 20%
Cloud Cover 65% 71% 31% 62%
Conditions Fog Mostly Cloudy Thunderstorm Thunderstorm
Sunrise & Sunset
5:53 AM
8:20 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.78], Average RMSE [1.88]
The National Weather Service forecast quality is good. MaxT RMSE [1.73], Average RMSE [1.96] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. Fog early. High of 86F. Winds from the SSW at 5 to 20 mph. Chance of rain 30%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. Low of 66F. Winds from the SSW at 10 to 15 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 68 | 65 83 | 69 82 | 69 73 | 66
Wind 6 mph SSW 9 mph SW 16 mph South 9 mph SSW
Humidity 91% 62% 62% 77%
Chance of Precip. 10% 10% 30% 30%
Cloud Cover 70% 59% 40% 75%
Conditions Fog Partly Cloudy Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:52 AM
8:21 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.22], Average RMSE [2.43]
The National Weather Service forecast quality is good. MaxT RMSE [2.34], Average RMSE [2.04] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
chancetstorms Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 81F. Winds from the South at 10 to 15 mph. Chance of rain 50%.
Thursday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and rain in the evening, then mostly cloudy. Low of 52F. Winds from the SSW at 5 to 10 mph shifting to the West after midnight. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 70 | 64 76 | 64 78 | 64 69 | 64
Wind 12 mph South 11 mph SSW 10 mph South 7 mph SW
Humidity 82% 67% 62% 85%
Chance of Precip. 30% 50% 50% 30%
Cloud Cover 96% 87% 54% 91%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:51 AM
8:22 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.89], Average RMSE [2.39]
The National Weather Service forecast quality is fair. MaxT RMSE [2.51], Average RMSE [2.35] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Friday
chancerain Partly cloudy with a chance of rain. High of 68F. Winds from the NW at 10 to 15 mph. Chance of rain 40%.
Friday Night
nt_partlycloudy Partly cloudy. Low of 46F. Breezy. Winds from the NW at 15 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 55 65 | 55 65 | 47 55 | 42
Wind 6 mph WNW 12 mph NW 15 mph NW 14 mph NW
Humidity 91% 72% 52% 61%
Chance of Precip. 0% 20% 10% 10%
Cloud Cover 81% 50% 33% 37%
Conditions Mostly Cloudy Chance of Rain Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:51 AM
8:23 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.92], Average RMSE [3.03]
The National Weather Service forecast quality is fair. MaxT RMSE [3.02], Average RMSE [2.67] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 72F. Breezy. Winds from the NNW at 15 to 20 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 46F. Winds from the NW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 37 60 | 35 71 | 38 56 | 36
Wind 16 mph NW 17 mph NNW 12 mph NNW 9 mph NNW
Humidity 62% 37% 31% 46%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 74% 0% 14% 100%
Conditions Mostly Cloudy Clear Clear Overcast
Sunrise & Sunset
5:50 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.90], Average RMSE [2.42]
The National Weather Service forecast quality is poor. MaxT RMSE [3.82], Average RMSE [3.20] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 72F. Winds from the NW at 5 to 10 mph.
Sunday Night
nt_partlycloudy Clear. Low of 50F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 35 64 | 37 67 | 40 56 | 39
Wind 7 mph NW 7 mph NNW 4 mph NNW 2 mph South
Humidity 54% 37% 36% 53%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 93% 17% 39% 66%
Conditions Overcast Clear Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.03], Average RMSE [2.92]
The National Weather Service forecast quality is poor. MaxT RMSE [3.93], Average RMSE [3.48] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Monday
partlycloudy Partly cloudy. High of 73F. Winds less than 5 mph.
Monday Night
nt_clear Clear. Low of 54F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 40 68 | 47 68 | 53 60 | 53
Wind 5 mph North 4 mph West 5 mph SSE 5 mph SSE
Humidity 55% 45% 63% 80%
Chance of Precip. 0% 0% 10% 0%
Cloud Cover 18% 34% 70% 23%
Conditions Clear Partly Cloudy Mostly Cloudy Clear
Sunrise & Sunset
5:49 AM
8:25 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.21], Average RMSE [3.10]
The National Weather Service forecast quality is poor. MaxT RMSE [3.70], Average RMSE [3.86] : Use NWS
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
chancerain Partly cloudy with a chance of rain. High of 75F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.
Tuesday Night
nt_partlycloudy Partly cloudy with a chance of rain. Fog overnight. Low of 59F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 59 | 54 72 | 61 73 | 63 63 | 62
Wind 3 mph SSE 6 mph SE 7 mph SE 4 mph SSE
Humidity 81% 70% 72% 98%
Chance of Precip. 20% 10% 20% 10%
Cloud Cover 52% 65% 47% 81%
Conditions Chance of Rain Mostly Cloudy Chance of Rain Fog
Sunrise & Sunset
5:48 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.89], Average RMSE [4.34]
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
mostlycloudy Mostly cloudy. High of 81F. Winds less than 5 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 64F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 61 | 60 76 | 65 75 | 67 67 | 65
Wind 3 mph South 4 mph South 5 mph South 4 mph South
Humidity 99% 67% 76% 97%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 54% 63% 100% 50%
Conditions Fog Partly Cloudy Overcast Partly Cloudy
Sunrise & Sunset
5:48 AM
8:27 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.04], Average RMSE [4.52]
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 66F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 65 79 | 65 82 | 67 69 | 66
Wind 4 mph South 4 mph SSW 4 mph South 4 mph SSW
Humidity 89% 62% 61% 91%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 44% 42% 43% 38%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:47 AM
8:27 PM
Source: BestForecast at 9:19 AM EDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Low of 66F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 67 | 65 80 | 66 82 | 68 71 | 67
Wind 3 mph SSW 3 mph SSW 3 mph SSW 2 mph SSW
Humidity 94% 60% 60% 91%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 27% 30% 49% %
Conditions Fog Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal 71 °F 50 °F
Record 84 °F (1998) 33 °F (2002)
Yesterday 81 °F 64 °F
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
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
PM10
Yesterday Good
OZONE
Current Moderate
PM2.5
Current Good
OZONE
Tuesday Moderate
PM2.5
Tuesday Good
OZONE
Wednesday Good
OZONE
Wednesday Good
PM2.5
Thursday Good
OZONE
Thursday Good
PM2.5
Friday Good
OZONE
Friday Good
PM2.5
Coastal Water Temperatures
Place Temperature
Washington, DC 68.0 °F
Lewisetta, VA 70.0 °F
Solomons Island, MD 66.9 °F
Marine Forecast
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:53 AM EDT 8:20 PM EDT
Civil Twilight 5:22 AM EDT 8:51 PM EDT
Nautical Twilight 4:44 AM EDT 9:29 PM EDT
Astronomical Twilight 4:03 AM EDT 10:11 PM EDT
Moon 4:34 PM EDT 3:17 AM EDT
Length Of Visible Light 15h 28m
Length of Day
14h 27m
Tomorrow will be 1m 32s longer.
Waxing Gibbous, 84% of the Moon is Illuminated
Today
Waxing Gibbous
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
83 °F
Martinsville
83 °F
Staunton
82 °F
Williamsburg
82 °F
Winchester
82 °F
Roanoke
57 °F
Dublin
57 °F
Marion
59 °F
Jonesville
59 °F
Abingdon
60 °F
Hot Springs
Record Extremes
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
Manassas 79 °F Scattered Clouds 12:50 PM EDT
Warrenton 81 °F Scattered Clouds 1:15 PM EDT
Dulles Airport 78 °F Mostly Cloudy 12:52 PM EDT
Fort Belvoir 77 °F Overcast 12:58 PM EDT
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Flight To ETA Status
UAL1471
Albuquerque, NM 		KIAD 01:31PM On Time
UAL259
Denver, CO 		KIAD 01:34PM On Time
BAW217
London, England 		KIAD 01:41PM On Time
UAL692
Chicago, IL 		KIAD 01:42PM On Time
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Type Condition
Flight Rule: VFR (KHEF)
Wind Speed: 6.0 kts.
Wind Dir: 180° (South)
Ceiling: Unlimited

METAR KHEF 211650Z 18006KT 10SM SCT022 26/21 A2998

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Nearby Events
Event Date Forecast
An Evening with West on 66 Acoustic Trio 9:00 PM EDT
2013-04-20		 Clear, 54°F
Event data courtesy eviesays.com
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Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Great Oak, Manassas, VA 81.0 °F 85 °F 72 °F 74% NW  at  0.0 mph 0.00 in / hr 227 ft 1:24 PM EDT Normal  
Lee Manor, Manassas, VA 77.7 °F 80 °F 71 °F 79% NW  at  0.0 mph 0.00 in / hr 275 ft 1:30 PM EDT Rapid Fire
Parkgate House, Nokesville, VA 82.9 °F 97 °F 82 °F 98% South  at  3.7 mph - / hr 220 ft 1:19 PM EDT Normal  
Westgate, Manassas, VA 83.8 °F 89 °F 71 °F 65% SW  at  1.0 mph 0.00 in / hr 178 ft 1:30 PM EDT Rapid Fire
Bridlewood, Gainesville, VA 84.2 °F 90 °F 72 °F 68% SSE  at  3.4 mph 0.00 in / hr 285 ft 1:30 PM EDT Rapid Fire  
Independent Hill, VA, Nokesville, VA 79.5 °F 79 °F 44 °F 28% ESE  at  0.0 mph 0.00 in / hr 326 ft 1:30 PM EDT Rapid Fire
Gingerwood, Manassas, VA 82.1 °F 87 °F 73 °F 73% SSE  at  0.0 mph 0.00 in / hr 331 ft 1:30 PM EDT Rapid Fire
Dale Blvd - Woodbridge, Woodbridge, VA 79.3 °F 82 °F 70 °F 74% WSW  at  1.0 mph 0.00 in / hr 345 ft 1:30 PM EDT Rapid Fire  
Little Rocky Run, Clifton, VA 81.7 °F 85 °F 70 °F 68% East  at  4.5 mph 0.00 in / hr 302 ft 1:30 PM EDT Rapid Fire  
Greenhill Crossing, Haymarket, VA 81.7 °F 87 °F 73 °F 75% East  at  2.0 mph 0.00 in / hr 0 ft 1:29 PM EDT Normal
Sangsters Court, Clifton, VA 77.4 °F 79 °F 71 °F 80% NNE  at  0.0 mph 0.00 in / hr 375 ft 1:18 PM EDT Normal  
Centreville, VA, Centreville, VA 82.4 °F 86 °F 70 °F 66% SSE  at  4.7 mph - / hr 351 ft 1:22 PM EDT Normal  
CENTREweather, Centreville, VA 81.5 °F 86 °F 71 °F 71% SSW  at  3.0 mph 0.00 in / hr 262 ft 1:30 PM EDT Rapid Fire
Piedmont, Haymarket, VA 79.6 °F 77 °F - - SE  at  2.0 mph 0.00 in / hr 358 ft 1:30 PM EDT Rapid Fire  
Oak Valley/KT4ER, Gainesville, VA 79.8 °F 83 °F 71 °F 75% South  at  0.0 mph 0.00 in / hr 496 ft 1:30 PM EDT Rapid Fire  
Little Rocky Run, Centreville, VA 82.2 °F 88 °F 73 °F 73% SSE  at  0.0 mph 0.00 in / hr 308 ft 1:30 PM EDT Rapid Fire  
APRSWXNET Centreville VA , Centreville, VA 80 °F 84 °F 71 °F 75% SSW  at  0 mph 0.00 in / hr 308 ft 12:53 PM EDT MADIS
Brookside, Warrenton, VA 70.0 °F - 68 °F 94% South  at  2.0 mph 0.00 in / hr 371 ft 1:30 PM EDT Rapid Fire  
Cedar Crest, Chantilly, VA 80.7 °F 85 °F 72 °F 75% SSE  at  1.0 mph 0.00 in / hr 292 ft 1:23 PM EDT Normal  
Oak Valley / Yewing, Gainesville, VA 82.3 °F 87 °F 71 °F 69% SSW  at  0.0 mph 0.00 in / hr 370 ft 1:29 PM EDT Normal  
VADOT I-66_@_Haymarket, Broad Run, VA 82 °F 83 °F 63 °F 53% SW  at  2 mph 0.00 in / hr 429 ft 12:32 PM EDT MADIS
Snow Hill, Haymarket, VA 82.8 °F 89 °F 74 °F 74% SW  at  3.0 mph 0.00 in / hr 454 ft 1:30 PM EDT Rapid Fire  
Lake Ridge, Woodbridge, VA 81.1 °F 85 °F 70 °F 70% SE  at  1.0 mph 0.00 in / hr 255 ft 1:30 PM EDT Rapid Fire  
APRSWXNET Warrenton VA, New Baltimore, VA 78 °F 80 °F 69 °F 73% WSW  at  3 mph 0.00 in / hr 571 ft 12:54 PM EDT MADIS
Mountainview Estates, Haymarket, VA 82.9 °F 87 °F 70 °F 65% WNW  at  0.0 mph 0.00 in / hr 486 ft 1:30 PM EDT Rapid Fire  
Wind Power Cube, Chantilly, VA 88.7 °F 94 °F 70 °F 54% SW  at  6.0 mph 0.00 in / hr 203 ft 1:30 PM EDT Normal  
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