A Flood Warning issued by the National Weather Service Wednesday for the DC Metro area has been extended until 9 p.m.
In addition to the flooding, there is a slight risk of severe thunderstorms that could produce damaging winds, hail, and a few tornadoes, especially in the southern part of the region, according to the Washington Post's Capital Weather Gang. The most likely timeframe for possible severe storms is 4-10 p.m.
Look for some road closures due to flooding.
A Flood Warning means that flooding is imminent or has been reported. Stream rises will be slow, the NWS states. Most flood deaths occur in automobiles; never drive your vehicle into areas where the water covers the roadway, the NWS warns. Just one foot of flowing water is powerful enough to sweep vehicles off the road.