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April 1920 tornado outbreak
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April 1920 tornado outbreak : ウィキペディア英語版
April 1920 tornado outbreak
The April 1920 tornado outbreak was a major severe weather event that affected the Southeastern United States on April 20, 1920. At least seven tornadoes affected the American U.S. states of Mississippi, Alabama, and Tennessee, six of them rated violent F4 on the Fujita scale. At least one of them likely attained F5 intensity, though this is uncertain. The tornado outbreak killed at least 224 people, 97 of them in Alabama and 126 in Mississippi; of these deaths, 223 were related to the six F4 tornadoes. Each of these F4s caused more than 20 deaths. This distribution of tornadoes causing at least 20 deaths is the largest in a single outbreak, tied with that of the April 11, 1965, Palm Sunday outbreak. The 1920 outbreak is also the third-deadliest outbreak in Alabama, April 27, 2011 (238 deaths in-state), and March 21, 1932 (268 deaths in-state), outbreaks. The Super Outbreak of April 3, 1974, was the fourth deadliest with 86 deaths across the state.
Five of the tornadoes were long tracked, each traveling more than across Mississippi and into Alabama. A tornado that began in Oktibbeha County, Mississippi, crossed into Alabama and lifted over Limestone County, having covered a distance of more than . Along its path, the tornado destroyed entire communities and killed at least 49 people in Alabama, a total that would be matched by a tornado on March 21, 1932. This tied for the deadliest Alabama tornado until an EF5 tornado in 2011 which killed 72 people. Additionally, the 1920 outbreak set a single-day record with four violent tornadoes in Mississippi, the highest such total in the state. With three F4s in Alabama, it is the fourth-most intense Alabama outbreak, following the April 3, 1974, Super Outbreak, with four F4–F5, the March 21, 1932, outbreak, with eight F4–F5, and the April 27, 2011, tornado outbreak, with nine EF4–EF5 tornadoes.
In addition to the tornadoes on April 20, other tornadoes associated with the same weather system occurred on April 19 and April 21.
==Tornado table==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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