1985 United States-Canada tornado outbreak
In total, 41 tornadoes touched down between 3 p.m. on May 31 and 12 a.m. on June 1, killing 90 people in total across the United States and Canada, with the most deadly tornado happening in the evening hours across Ohio and Pennsylvania. The tornado that struck Niles, Ohio was the deadliest tornado in Ohio since the Xenia tornado in 1974. The outbreak was the worst tornado outbreak in the United States since the 1974 Super Outbreak. It was also the third costliest in history, with $980 million in damage in Ohio, Pennsylvania, New York, and Ontario.