The 1991 West Virginia derecho was a serial derecho (storm) that started in Arkansas in the early morning hours of April 9, 1991 and made its way northeast, finally dying out over Pennsylvania late that evening. Two people were killed and 145 were injured in the event, mainly from falling trees, flying debris, and mobile homes and trailers being overturned. Most of the destructive damage occurred in Tennessee, Kentucky, West Virginia, western Maryland, and Western Pennsylvania.