The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Central Carroll County in north central Maryland... East central Frederick County in north central Maryland... * Until 245 PM EDT. * At 153 PM EDT, a severe thunderstorm was located near Mount Airy, or 12 miles north of Damascus, moving northeast at 30 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... Westminster, Eldersburg, New Windsor, Libertytown, Carrollton, Patapsco, Winfield, Reese, Wagners Mill, Marston and Unionville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. By The National Weather Service