Forces of Nature: ThinkQuest 2000 (Team #C003603)
http://library.thinkquest.org/C003603/english/tornadoes/tenworsttornadoes.shtml
Date
Location
Dead 1925, March 18
Midwestern United States
689 1884, February 9-19
Southern United States
Over 600 1936, April 5-6
Mississippi and Georgia
419 1896, Mary 27
St. Louis, Missouri
Up to 400 1952, March 21-22
South-central United States
343 1974, April 3-4
Midwestern United States
315 1840, May 7
Natchez, Mississippi
Over 300 1965, April 11
Midwestern United States
272 1932, March 21
Alabama
268 1917, March 23-27
Midwestern United States
211