SEVERE THUNDERSTORM WATCH 492 REMAINS VALID UNTIL MIDNIGHT EDT TONIGHT FOR THE FOLLOWING AREAS THE DISTRICT OF COLUMBIA IN MARYLAND THIS WATCH INCLUDES 10 COUNTIES IN CENTRAL MARYLAND ANNE ARUNDEL HOWARD MONTGOMERY PRINCE GEORGES IN NORTH CENTRAL MARYLAND CARROLL FREDERICK IN NORTHEAST MARYLAND CECIL IN NORTHERN MARYLAND BALTIMORE BALTIMORE CITY HARFORD IN VIRGINIA THIS WATCH INCLUDES 7 COUNTIES IN NORTHERN VIRGINIA ARLINGTON CITY OF ALEXANDRIA CITY OF FAIRFAX CITY OF FALLS CHURCH FAIRFAX LOUDOUN IN NORTHWEST VIRGINIA CLARKE THIS INCLUDES THE CITIES OF ABERDEEN, ALEXANDRIA, ANNAPOLIS, ARLINGTON, ARNOLD, ASPEN HILL, BALLENGER CREEK, BALTIMORE, BEL AIR, BERRYVILLE, BETHESDA, BOWIE, CAMP SPRINGS, CATONSVILLE, CHANTILLY, CLINTON, COLLEGE PARK, COLUMBIA, DUNDALK, EDGEWOOD, ELDERSBURG, ELKTON, ELLICOTT CITY, ESSEX, FAIRFAX, FALLS CHURCH, FALLSTON, FREDERICK, GAITHERSBURG, GERMANTOWN, GLEN BURNIE, GREENBELT, HAVRE DE GRACE, HERNDON, JOPPATOWNE, LAUREL, LEESBURG, MCLEAN, ODENTON, PARKVILLE, PIKESVILLE, POTOMAC, RANDALLSTOWN, RESTON, ROCKVILLE, SEVERN, SEVERNA PARK, SILVER SPRING, SOUTH GATE, STERLING, SUITLAND-SILVER HILL, TOWSON, WASHINGTON, AND WESTMINSTER. By The National Weather Service, Sterling, Va.