...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR NORTHEASTERN WASHINGTON...WESTERN CARROLL AND FREDERICK COUNTIES IN NORTH CENTRAL MARYLAND... At 633 PM EDT, severe thunderstorms were located along a line extending from near Carroll Valley to near Clover Hill, moving east at 40 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... Frederick, Thurmont, Emmitsburg, Mount Airy, Taneytown, Walkersville, Boonsboro, Smithsburg, Braddock Heights, New Market, Mount Aetna, Mount Lena, San Mar, Clover Hill, Discovery-Spring Garden, Wolfsville, Linganore-Bartonsville, Myersville, Cavetown and New Windsor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. By The National Weather Service &&