Tornado History Missouri accounts for six of the 30 deadliest tornadoes in United States history. May 22, 2011 – Joplins Sept. 29, 1927 – St. Louis May 9, 1927 – Poplar Bluff March 18, 1925 – Missouri, Illinois, Indiana May 27, 1896 – St. Louis April 18, 1880 – Marshfield
