The most destructive tornado in the U.S

The most extreme tornado in recorded history was the Tri-State Tornado, which went through parts of Missouri, Illinois, and Indiana on March 18, 1925. It was likely an F5

It holds records for longest path length at 219 miles, longest time it went on about 3.5 hours, and fastest speed for a significant tornado at 73 mph. it is the deadliest single tornado in United States history. there were about 695 dead.