NEW : 33 Arkansas counties are under a tornado warning , National Weather Service says . NEW : 20 counties in Tennessee are under a tornado watch , weather service says . NEW : `` I urge all Nashville residents to stay home and stay off the roads , '' Dean said . At least two people have been killed in severe flooding in central Tennessee . 6 - 10 inches of rain has fallen in 12 hours in Nashville area .
NEW : 33 Arkansas counties are under a tornado warning , National Weather Service says . NEW : 20 counties in Tennessee are under a tornado watch , weather service says . NEW : At least two people have been killed in severe flooding in central Tennessee . 6 - 10 inches of rain has fallen in 12 hours in Nashville area .