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"14. 1974 (366 deaths): The Super Outbreak from April 3-4 accounted for almost all tornado-related deaths in 1974. There were 148 confirmed tornadoes in 13 states during the 24 hours, and extensively damaged approximately 900 square miles. With a death toll of over 300, the outbreak surpassed previous and succeeding events in severity, longevity and extent."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wgal.com/article/15-deadliest-tornado-years-in-u-s-history/6148912>