SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for. Northeastern Washington County in north central Maryland. * Until 815 PM EDT. * At 730 PM EDT, a severe thunderstorm was located near Wilson-Conococheague, or 8 miles west of Hagerstown, moving east at 20 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. Hagerstown, Fountainhead-Orchard Hills, Paramount-Long Meadow, Wilson-Conococheague, Long Meadow, Maugansville, Leitersburg, Clear Spring, Fort Ritchie, Ringgold, Big Spring, Middleburg, Warrenton, Highfield, and Cascade.