On this day in 1960, an F4 tornado tracked for 35 miles through parts of Geary, Wabaunsee, Pottawatomie, and Shawnee Counties in Kansas; it was part of a destructive tornado family that traveled for ~70 miles through northern Kansas. At times the twister was nearly two miles wide. Thomas Grazulis, in Significant Tornadoes, rated the tornado F5 and noted that “it produced F5 damage to two farms, one five miles south of Wamego, and another South of St. Mary’s.” Source: Significant Tornadoes 1880-1989.