Tornado killed 4 Boy Scouts at Little Sioux Scout Ranch camp in western Iowa, which occupies 1,800 acres. Three boys were 13 and one 14 years old. Scouts were there for a leadership training course. 48 scouts and staff were injured. Tornado struck about 6:30 p.m. 27 more tornadoes touched down in Kansas, Minnesota and Nebraska. Those tornadoes killed at least two people in northern Kansas, and destroyed much of the small town of Chapman. At Kansas State University campus in Manhattan, a tornado destroyed a wind erosion lab, damaged several engineering and science buildings, and tore the roof off a fraternity house.