Since 1971, the United States has used the Enhanced F-Scale to quantify tornado strength and destructive properties based on an assessment of 8 levels of damage to 28 separate indicators. In 2013, approximately 928 tornadoes touched down, including 52 that caused fatalities in 7 states.
|Jan. 30||Bartow County, Ga.||3||1|
|Feb. 21||Sabine County, Tex.||1||1|
|April 11||Kemper County, Miss.||3||1|
|May 15||Hood County, Tex.||4||6|
|May 19||Pottawatomie County, Okla.||4||2|
|May 20||Cleveland County, Okla.||5||24|
|May 30||Grant County, Ark.||1||1|
|May 31||Canadian County, Okla.||3||8|
|June 24||Muscatine County, Iowa||1||1|
|Nov. 17||Tazwell County, Ill.||4||2|
|Nov. 17||Washington County, Ill.||4||2|
|Nov. 17||Massac County, Ill.||3||3|
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