At 614 PM EDT, radar indicated strong thunderstorms were located along a line extending from Ellicott City to near Herndon to near The Plains. Movement was east at 35 mph.
Northwest wind gusts of 40 to 50 mph and heavy downpours are possible with these storms.
Locations impacted include... Arlington, Alexandria, Centreville, Rockville, Bethesda, Reston, Bowie, Annandale, Olney, Springfield, College Park, South Riding, Herndon, Greenbelt, Fairfax, Langley Park, Beltsville, Vienna, Groveton, and Forestville.
This includes the following highways... Interstate 95 in Maryland between mile markers 15 and 34. Interstate 270 in Maryland between mile markers 1 and 7.
Torrential rainfall is also occurring with these storms, and may cause localized flooding. Do not drive your vehicle through flooded roadways.
These storms may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.