Storms swept across the D.C. area Thursday morning for the second time this week, bringing heavy rain and lightning to the region.
The fast-moving cluster of storms arrived in the D.C. metro area just before 6 a.m. Storm Team4 has declared a Weather Alert Day.
The rain will continue through the morning, tapering off around 10 a.m.
Storm Team4 Meteorologist Tom Kierein said some creeks and streams may overflow their banks, especially across Northern Virginia and the Shenandoah Valley. Low-lying areas in part of the region also may see some high water.
A flash flood warning is in effect for Page and Shenandoah counties in Virginia until 1 p.m. Thursday. Those watches are likely to be extended.
There's a slight chance for scattered thunderstorms Thursday evening, with the rain moving out of the area by late Thursday night.
This is the second time the D.C. area has dealt with storms this week. The National Weather Service confirmed Wednesday that a tornado touched down in Howard County, Maryland, on Tuesday.
The tornado was an EF-0, the lowest level on the tornado wind speed scale. The tornado had wind speeds reaching 80 mph and touched down for nearly 13 miles in a path about 500 yards wide.
No injuries had been reported as of late Tuesday.
In D.C., the Cleveland Park Metro station was closed after flooding sent water cascading down an escalator. Commuters who got off a train trudged through the deep water, photos show.