The National Weather Service in Sterling Virginia has issued a * Flood Warning for... Northwestern Carroll County in north central Maryland... Central Frederick County in north central Maryland... * Until 415 AM EDT. * At 1018 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. Flooding is ongoing or expected to begin shortly in the warned area. Between 1 and 1.5 inches of rain have fallen. * Some locations that will experience flooding include... Frederick... Thurmont... Emmitsburg... Ballenger Creek... Taneytown... Walkersville... Braddock Heights... Clover Hill... Discovery-Spring Garden... Wolfsville... Jefferson... Myersville... Woodsboro... Sabillasville... Burkittsville... Lewistown... Utica... Graceham... Bloomfield... Rocky Ridge... Additional rainfall amounts of 1 to 2 inches are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. By The National Weather Service, Sterling, Va.