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"4. 1927 (540 deaths): While not one the deadliest, the tornado in September of 1927 in St. Louis, Missouri was the second costliest tornado in St. Louis history. The tornado cut a 600 yard by 12 miles long strip through the city, costing anywhere from $22-53 million worth of damage. Between 72 and 79 persons were killed (approximately 13% of tornado-related deaths that year)."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wgal.com/article/15-deadliest-tornado-years-in-u-s-history/6148912>