Arlington County is under a Flood Warning until 12:45 a.m. Saturday.
Another round of heavy rain moving into the area could cause flooding, according to the National Weather Service.
More from NWS:
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * FLOOD WARNING FOR… SOUTHEASTERN ARLINGTON COUNTY IN NORTHERN VIRGINIA… EAST CENTRAL FAIRFAX COUNTY IN NORTHERN VIRGINIA… THE CITY OF ALEXANDRIA IN NORTHERN VIRGINIA… * UNTIL 1245 AM EDT. * AT 847 PM EDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN WHICH WILL CAUSE FLOODING. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN AND ADDITIONAL RAINFALL AMOUNTS AROUND AN INCH ARE POSSIBLE. * SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE… ARLINGTON, ALEXANDRIA, ANNANDALE, HUNTINGTON, CRYSTAL CITY, REAGAN NATIONAL AIRPORT, LINCOLNIA, LAKE BARCROFT, BALLSTON, BARCROFT, JEFFERSON MANOR AND BAILEYS CROSSROADS.
820pm: More heavy rain is developing over the western DC suburbs, moving east. Prepare for another round of heavy rain and possible renewed flooding inside the Capital Beltway over the next hour.
— NWS DC/Baltimore (@NWS_BaltWash) September 8, 2018
8:50p: Flood warning now around Alexandria and Arlington. Meanwhile band of heavy rain and lightning in west and SW burbs moving east into Beltway and I-95. pic.twitter.com/QjEhuNUmCr
— Capital Weather Gang (@capitalweather) September 8, 2018