How long did the Tri-State Tornado last?
Flexi Says:
The longest tornado in recorded history was the "Tri-State Tornado" on March 18, 1925, which lasted over 3 hours and travelled 352 km (219 miles) across parts of Missouri, Illinois, and Indiana. The Tri-State Tornado was also the deadliest tornado in U.S. history, causing 695 fatalities and an additional 2,027 injuries.