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Average Number of Tornado Incidences per Year (U.S.)

North AmericaPhysical Environment

Tornado prevalence in the United States per 1,000 square miles per year

A map shows average tornado incidences per year in the U.S. The highest incidences (dark brown) are in Oklahoma, parts of Texas, Kansas, and Missouri. The lowest incidences (light yellow) are in Alaska, Washington, Oregon, and California.

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Display by:	Average Number of Tornado Incidences per Year (U.S.)					Manganese Mines
	Less than 1	1–5	6–10	11–15	More than 15	Manganese Mines
Alaska	99.8%
District of Columbia		100%
Florida		64.2%	35.5%
Idaho	100%
New Hampshire	1.24%	98.7%
Rhode Island		99.3%
Vermont	77.1%	22.6%
Washington	99.9%
Maine	40.0%	59.8%
North Dakota	29.5%	70.5%
Kentucky	4.42%	60.5%	35.1%
Virginia	10.3%	89.6%
Delaware		99.2%
Mississippi		10.9%	74.0%	15.1%
Nebraska		88.6%	11.4%
Texas	16.8%	43.9%	36.9%		2.38%
Missouri		23.4%	62.5%	14.1%
Hawaii	92.1%
North Carolina		99.9%
Alabama		69.5%	16.4%	14.0%
Kansas		68.1%	31.5%
Wisconsin	13.1%	53.1%	33.7%
British Columbia	2.52%
New Jersey	19.5%	80.3%
Michigan	34.8%	64.8%
Connecticut		99.9%
Pennsylvania	6.15%	93.9%
Maryland		99.3%
Oklahoma		3.41%	35.1%	46.0%	15.5%
South Dakota	22.1%	76.0%	1.85%
Ohio	3.97%	96.0%
Indiana		62.9%	37.1%
Minnesota	23.4%	72.5%	4.03%
Iowa		50.0%	50.0%
Illinois		70.3%	29.6%
Arizona	92.2%	7.76%				48
Utah	100%					15
Wyoming	87.7%	12.3%				1
Montana	100%					24
West Virginia	48.2%	51.8%				2
Louisiana		30.4%	69.5%			1
Oregon	100%					7
New Mexico	90.2%	9.71%				3
South Carolina		99.9%				1
Colorado	69.4%	30.6%				15
Nevada	100%					2
Massachusetts		99.5%				2
Georgia		61.5%	38.5%			3
New York	61.6%	38.3%				2
Tennessee		41.3%	58.7%			1
Ontario						1
California	99.9%					202
Arkansas			87.2%	12.8%		3

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