Severe Thunderstorm Warning The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Northeastern Washington County in north central Maryland... Northwestern Frederick County in north central Maryland... * Until 630 PM EDT. * At 552 PM EDT, a severe thunderstorm was located over Long Meadow, or near Hagerstown, moving east at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. 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, Thurmont, Municipal Stadium, Robinwood, Fountainhead-Orchard Hills, Smithsburg, Paramount-Long Meadow, Wilson-Conococheague, Mount Aetna, Long Meadow, Maugansville, Cavetown, Leitersburg, Sabillasville, Fort Ritchie, Chewsville, Ringgold, Middleburg, Warrenton and Bridgeport. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. By The National Weather Service