Top 10 Deadliest Tornadoes in American History

April 30, 2014 5:36 am Last Updated: July 18, 2015 5:15 pm

1. March 18, 1925, Tri-State (Missouri, Illinois, Indiana), 689 lives lost
2. May 6, 1840, Natchez, Miss., 317
3. May 27, 1896, St. Louis, Mo., 255
4. April 5, 1936, Tupelo, Miss., 216
5. April 6, 1936, Gainesville, Ga., 203
6. April 9, 1947, Woodward, Okla., 181
7. April 24, 1908, Amite La.; Purvis, Miss., 143
8. May 22, 2011, Joplin, Mo., 122
9. June 12, 1899, New Richmond, Wis., 117
10. June 8, 1953, Flint, Mich., 115

(Source: Infoplease)