The most destructive tornado in history was the Tri-State tornado, that stormed over parts of, Illinois, Missouri, and Indiana on March 18th, 1925. It is one of the longest path length witch is 219 miles,352km, longest DURATION , witch is about 3.5 hours, and fastest forward speed for 73mph,117km/h anywhere on earth.
Many say it is on the deadliest tornado in the United States history, it left 695 people
dead.it is also ranked the third deadliest tornado today.