(Preble County, OH)--Only about 30 Preble County customers of DP&L are still without power Monday morning after a line of strong storms swept through the area on Saturday afternoon. 60 mile-per-hour winds swept across southern Preble County, bringing down trees and power lines. Initially, 1200 customers were in the dark. Mutual aid crews from as far away as Kentucky and Tennessee were in the area Monday to help restore power. All power is expected to be restored by Monday night.