For the second night in a row, northern portions of Arlington County are under a Severe Thunderstorm Warning.

More from the National Weather Service:

Severe Thunderstorm Warning including Washington DC, Arlington VA, Silver Spring MD until 8:15 PM EDT pic.twitter.com/Y1XBqPMAq1

— NWS DC/Baltimore (@NWS_BaltWash) July 21, 2019

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR… THE NORTHWESTERN DISTRICT OF COLUMBIA… SOUTHEASTERN MONTGOMERY COUNTY IN CENTRAL MARYLAND… ARLINGTON COUNTY IN NORTHERN VIRGINIA… THE CITY OF FALLS CHURCH IN NORTHERN VIRGINIA… NORTHEASTERN FAIRFAX COUNTY IN NORTHERN VIRGINIA… * UNTIL 815 PM EDT. * AT 731 PM EDT, SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR NORTH POTOMAC TO PIMMIT HILLS, MOVING EAST AT 10 MPH. HAZARD…60 MPH WIND GUSTS. SOURCE…RADAR INDICATED. IMPACT…DAMAGING WINDS WILL CAUSE SOME TREES AND LARGE BRANCHES TO FALL. THIS COULD INJURE THOSE OUTDOORS, AS WELL AS DAMAGE HOMES AND VEHICLES. ROADWAYS MAY BECOME BLOCKED BY DOWNED TREES. LOCALIZED POWER OUTAGES ARE POSSIBLE. UNSECURED LIGHT OBJECTS MAY BECOME PROJECTILES. * LOCATIONS IMPACTED INCLUDE… ARLINGTON, ROCKVILLE, BETHESDA, ANNANDALE, OLNEY, FALLS CHURCH, PIMMIT HILLS, MCLEAN, HOWARD UNIVERSITY, GALLAUDET UNIVERSITY, AMERICAN LEGION BRIDGE, FORT TOTTEN, ROSSLYN, ASPEN HILL, POTOMAC, NORTH BETHESDA, LINCOLNIA, TYSONS CORNER, TAKOMA PARK AND COLESVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS… FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING. && HAIL…<.75IN WIND…60MPH

Thunderstorms are ramping up tonight. A quick tip: if a traffic signal is dark, that is a power loss and requires the power company. If it’s flashing, that is a reset and that is us. You can report flashing signals at https://t.co/12wxgee8pi or 800-FOR-ROAD. Stay safe, Friends!

— VDOT Northern VA (@VaDOTNOVA) July 21, 2019