15 Deadliest tornadoes

http://www.almanac.com/content/15-deadliest-tornadoes-us-history

1. March 18, 1925 Tri-State (MO/IL/IN) 695 deaths
    
2. May 6, 1840 Natchez MS 317 deaths
    
3. May 27, 1896 St. Louis MO 255 deaths
    
4. April 5, 1936 Tupelo MS 216 deaths
    
5. April 6, 1936 Gainesville GA 203 deaths
    
6. April 9, 1947 Woodward OK 181 deaths
    
7. April 24, 1908 Amite LA, Purvis MS 143 deaths
    
8. June 12, 1899 New Richmond WI 117 deaths
    
9. June 8, 1953 Flint MI 115 deaths
    
10. May 11, 1953 Waco TX 114 deaths
     
11. May 18, 1902 Goliad TX 114 deaths
     
12. Mar 23, 1913 Omaha NE 103 deaths
     
13. May 26, 1917 Mattoon IL 101 deaths
     
14. June 23, 1944 Shinnston WV 100 deaths
     
15. April 18, 1880 Marshfield MO 99 deaths

Interestingly, tornadoes seem to be largely a U.S. phenomenon. Tornadoes occur in nearly all parts of Europe, but they are far less common and appear in less violent forms than in the U.S.

Statistics show that most tornadoes in the U.S. occur between 5PM and 6PM. However, those times vary by region; for example, Florida tornadoes are just as likely to occur after midnight as in the afternoon.