Area Under Severe Thunderstorm Watch

The National Weather Service has issued a severe thunderstorm watch for the Washington metropolitan area, including all of Fairfax County.

The watch is active until 10 p.m. Tuesday. The weather service has also issued a hazardous weather outlook for Northern Virginia counties adjacent to the Potomac River. Thunderstorms are expected and may become severe, with the potential for damaging winds and large hail.

Heavy downpours may lead to localized flash flooding.

Also, a flash flood warning has been issued for western and central Fairfax County and western Arlington County. At 8:05 p.m., National Weather Service doppler radar indicated thunderstorms producing torrential rainfall along a line extending from Great Falls to Fairfax, moving east at 15 miles per hour.