Tri-State Tornado
Overview
 
The Tri-State Tornado of Wednesday, March 18, 1925, was the deadliest tornado in U.S. history. With 695 confirmed fatalities, the tornado killed more than twice as many as the second deadliest, the 1840 Great Natchez Tornado
Great Natchez Tornado
The Great Natchez Tornado hit Natchez, Mississippi on May 7, 1840. It is the second deadliest single tornado in United States history, killing 317 people . It is also the only recorded massive tornado in the U.S.A. that killed more people than it injured: only 109 were injured...

. The continuous ≥219 mile (≥352 km) track left by the tornado was the longest ever recorded in the world: the tornado crossed from southeastern Missouri
Missouri
Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

, through Southern Illinois, then into southwestern Indiana
Indiana
Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

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