Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Washington Manassas Airport (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

A Few Clouds

87°F

31°C

Humidity	59%
Wind Speed	S 9 mph
Barometer	29.91 in (1013.3 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	93°F (34°C)
Last update	27 Aug 4:56 pm EDT

More Information:

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

Extended Forecast for

The Plains VA

Severe T-storm Watch until August 27, 10:00pm

Click here for hazard details and duration

Severe T-storm Watch

Severe T-storm Watch until August 27, 10:00pm
NOW until 10:00pm Thu
Severe T-storm Watch
This Afternoon
High: 87 °F
Severe
Thunderstorms
Tonight
Low: 66 °F
Severe
Thunderstorms
then Patchy
Fog
Friday
High: 85 °F
Patchy Fog
then Slight
Chance
T-storms
Friday Night
Low: 65 °F
Mostly Cloudy
Saturday
High: 85 °F
Mostly Sunny
Saturday Night
Low: 66 °F
Mostly Clear
Sunday
High: 88 °F
Sunny
Sunday Night
Low: 69 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Scattered showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a high near 87. South wind around 8 mph. Chance of precipitation is 40%.

Tonight

Showers and thunderstorms likely before 11pm, then scattered showers between 11pm and midnight. Some of the storms could be severe. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 85. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.

Friday Night

Mostly cloudy, with a low around 65. Calm wind.

Saturday

Mostly sunny, with a high near 85. North wind around 5 mph becoming light and variable in the afternoon.

Saturday Night

Mostly clear, with a low around 66.

Sunday

Sunny, with a high near 88.

Sunday Night

Partly cloudy, with a low around 69.

Monday

Sunny, with a high near 90.