Deadliest US tornadoes since 1900 143 deaths. April 24, 1908, in Amite, Louisiana, and Purvis, Mississippi. 116 deaths. June 8, 1953, in Flint, Michigan. 114 deaths. May 11, 1953 in Waco, Texas. May 18, 1902 in Goliad, Texas. 103 deaths. March 23, 1913, in Omaha, Nebraska. Source: National Oceanic and Atmospheric Administration.