Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Thunderstorm in Vicinity

83°F

28°C

Humidity	61%
Wind Speed	W 7 mph
Barometer	29.53 in (1000.2 mb)
Dewpoint	68°F (20°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	28 Jul 6:55 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles S Mount Vernon VA

Tornado Watch July 28, 07:29pm until July 28, 10:00pm

Click here for hazard details and duration

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Tornado Watch July 28, 07:29pm until July 28, 10:00pm
NOW until 10:00pm Tue
Tornado Watch
Tonight
Low: 70 °F
Severe
Thunderstorms
then Mostly
Clear
Wednesday
High: 82 °F
Sunny
Wednesday Night
Low: 70 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 70 °F
Mostly Clear
Friday
High: 84 °F
Sunny
Friday Night
Low: 73 °F
Partly Cloudy
Saturday
High: 87 °F
Mostly Sunny

Detailed Forecast

Tonight

Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight. Some of the storms could be severe. Cloudy during the early evening, then gradual clearing, with a low around 70. Light and variable wind becoming northwest 5 to 9 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Sunny, with a high near 82. Northwest wind around 11 mph, with gusts as high as 21 mph.

Wednesday Night

Mostly clear, with a low around 70. Northwest wind around 9 mph.

Thursday

Sunny, with a high near 82. Northwest wind around 10 mph, with gusts as high as 18 mph.

Thursday Night

Mostly clear, with a low around 70. Northwest wind 3 to 6 mph.

Friday

Sunny, with a high near 84.

Friday Night

Partly cloudy, with a low around 73.