CHARLESTON, W.Va. -- Drivers paced their cars along Interstate 77 in Mercer County and officials reported many traffic accidents as the state's southeastern counties were caught in a snowstorm moving east on Thursday night. The National Weather Service predicted that by Thursday's end, areas of Greenbrier, Mercer, Monroe and Summers would have up to 11 inches of snow. In higher elevations, there would be at least a foot of snow or more, meteorologists said.In Mercer County, cars drove bumper to bumper for miles and many motorists were stranded along the roadway. More than 1,000 customers were without electricity in McDowell, Mercer and Monroe counties. Approximately 200 residents were without power in Summers County, where meteorologists said conditions would be fairer.