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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.)					Sea-Surface Temperature Anomalies: El Niño					Tropical Forests	Average Number of Hail Storms
	Less than 1	1–5	6–10	11–15	More than 15	-0.25 to 0.25	0.75 to 1.0	1.0 to 1.25	1.25 to 1.5	1.5 to 1.75	Tropical Forests	0–0.9	1.0–1.9	2.0–3.9	4.0–5.9	6.0–8.0	More than 8
Alaska	99.8%					0.318%
Nunavut						0.352%
Nova Scotia						0.847%
Prince Edward Island						1.25%		0.264%
Hawaii	92.1%					1.74%	1.20%	0.113%	0.444%	2.10%
New Brunswick						0.522%
British Columbia	2.52%					0.126%
Newfoundland and Labrador						0.392%
Arizona	92.2%	7.76%										33.9%	37.9%	28.2%
Utah	100%													65.7%	34.0%
District of Columbia		100%											100%
Florida		64.2%	35.5%			0.596%					1.15%	99.1%
Idaho	100%											8.79%	45.9%	42.5%	2.27%
New Hampshire	1.24%	98.7%										5.08%	66.9%	15.4%		12.6%
Rhode Island		99.3%				4.64%						95.0%
Vermont	77.1%	22.6%										10.1%	74.0%	13.9%		1.88%
Washington	99.9%					0.513%						19.6%	39.1%	1.25%
Wyoming	87.7%	12.3%												68.1%	11.4%	4.28%
Montana	100%												42.5%	57.3%
Maine	40.0%	59.8%				0.133%						13.8%	77.4%	6.92%
North Dakota	29.5%	70.5%											60.5%	39.5%
Kentucky	4.42%	60.5%	35.1%											100%
Virginia	10.3%	89.6%				0.126%						3.18%	73.0%	20.6%
Delaware		99.2%				0.762%						4.13%	5.64%
Mississippi		10.9%	74.0%	15.1%								6.06%	52.9%	41.0%
West Virginia	48.2%	51.8%											8.28%	91.7%
Nebraska		88.6%	11.4%											24.2%	71.8%	3.54%
Texas	16.8%	43.9%	36.9%		2.38%	0.183%						11.8%	30.6%	38.0%	18.7%
Missouri		23.4%	62.5%	14.1%										100%
Louisiana		30.4%	69.5%			0.184%						1.80%	60.8%	7.42%
North Carolina		99.9%				0.319%						27.9%	56.8%	14.7%
Oregon	100%											1.12%	61.6%	8.66%
Alabama		69.5%	16.4%	14.0%								21.0%	59.7%	19.2%
New Mexico	90.2%	9.71%											16.8%	64.8%	18.4%
Kansas		68.1%	31.5%											4.32%	55.5%
Wisconsin	13.1%	53.1%	33.7%									45.3%		54.2%
New Jersey	19.5%	80.3%				0.329%						72.0%	27.2%
South Carolina		99.9%										60.2%	39.7%
Michigan	34.8%	64.8%										69.8%
Connecticut		99.9%										67.7%	32.3%
Pennsylvania	6.15%	93.9%										1.31%	43.1%	55.6%
Colorado	69.4%	30.6%												5.22%	54.1%	11.9%	3.60%
Nevada	100%											26.4%	33.2%	40.2%
Massachusetts		99.5%				1.78%						51.1%	46.3%
Georgia		61.5%	38.5%									58.3%	41.5%
New York	61.6%	38.3%				0.105%						2.70%	83.9%	11.4%
Maryland		99.3%				0.874%						21.9%	1.21%	9.55%
Oklahoma		3.41%	35.1%	46.0%	15.5%									49.7%	50.3%
Tennessee		41.3%	58.7%										4.73%	95.3%
California	99.9%					0.110%						15.0%	69.7%	9.11%
Arkansas			87.2%	12.8%										100%
South Dakota	22.1%	76.0%	1.85%											75.1%	24.9%
Ohio	3.97%	96.0%										2.15%		97.8%
Indiana		62.9%	37.1%									20.1%		79.9%
Minnesota	23.4%	72.5%	4.03%										29.8%	70.1%
Iowa		50.0%	50.0%											100%
Illinois		70.3%	29.6%									2.58%		97.4%

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