Damage to a trailer court on Buck Tail Road in St. Marys (Ray Biemel).
Three tornadoes were reported on September 3, 1963. This summary looks at the strongest, an F3 that hit St. Marys in Central PA. The rating is disputed, Thomas Grazulis Rates it F2. 20 people were injured as the tornado damaged or destroyed 100-150 buildings across the Lynchville neighborhood in St. Marys.