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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.)					Distribution of Calcium Carbonate in Modern Surface Sediments					Major Waterfalls and Cataracts
	Less than 1	1–5	6–10	11–15	More than 15	0 - 20	20 - 40	40 - 60	60 - 80	80 - 100	Alexandra Falls	Athabasca Falls	Baileys Chute	Celilo Falls	Cohoes Falls	Cumberland Falls	Great Falls	Kettle Falls	Kootenai Falls	Little Falls	Louise Falls	Marcus Falls	Niagara Falls	Osprey Falls	Rearguard Falls	Sandstone Falls	Sherars Falls	Vermilion Falls	Virginia Falls	Waterloo Falls	Willamette Falls
Arizona	92.2%	7.76%
Utah	100%
District of Columbia		100%
Idaho	100%
New Hampshire	1.24%	98.7%
Vermont	77.1%	22.6%
Wyoming	87.7%	12.3%
North Dakota	29.5%	70.5%
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%
Louisiana		30.4%	69.5%
Alabama		69.5%	16.4%	14.0%
New Mexico	90.2%	9.71%
Kansas		68.1%	31.5%
Wisconsin	13.1%	53.1%	33.7%
South Carolina		99.9%
Michigan	34.8%	64.8%
Connecticut		99.9%
Pennsylvania	6.15%	93.9%
Colorado	69.4%	30.6%
Nevada	100%
Oklahoma		3.41%	35.1%	46.0%	15.5%
Tennessee		41.3%	58.7%
Arkansas			87.2%	12.8%
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%
Alaska	99.8%					0.671%
Florida		64.2%	35.5%					0.637%		0.865%
Rhode Island		99.3%				4.44%
Maine	40.0%	59.8%				0.825%
Nova Scotia						3.14%
Delaware		99.2%				2.57%
Prince Edward Island						19.7%
Hawaii	92.1%					2.48%	13.2%		3.56%	1.64%
North Carolina		99.9%				1.08%
New Brunswick						0.602%
Newfoundland and Labrador						1.91%
New Jersey	19.5%	80.3%				1.77%
Massachusetts		99.5%				5.64%			0.220%
Georgia		61.5%	38.5%					0.250%
Maryland		99.3%				2.92%
California	99.9%					0.408%	0.184%
Northwest Territories											1										1								1
Washington	99.9%					1.05%												1
Montana	100%																		1
Kentucky	4.42%	60.5%	35.1%													1
Virginia	10.3%	89.6%				0.818%											1
West Virginia	48.2%	51.8%																								1
Oregon	100%					0.120%								1						1							1			1	1
British Columbia	2.52%					0.699%							1									1		1	1
Alberta												1																1
New York	61.6%	38.3%				3.00%									1
Ontario																							1

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