What was the deadliest tornado outbreak in the U.S.?
The deadliest tornado outbreak in U.S. history occurred on March 18, 1925. 747 people were killed and 2,027 were injured in Missouri, Illinois, and Indiana when several twisters touched down on this day. The largest of these tornadoes, named the “Tri-State”, took 695 lives and was classified as an F5. It moved over 215 miles of land at 60-73 mph.