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Atlas (Beta)

Areas of Strong Tornado Occurrence

WorldPhysical Environment

The areas that show the greatest concentration of dots have the highest frequency of tornadoes

A world map shows areas of strong tornado occurrences, marked in red dots. Tornadoes cluster mainly in the eastern region of North America. Other regions include Argentina, parts of Europe, Japan, Bangladesh, Australia, New Zealand, and southern Africa.

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Display by:	Areas of Strong Tornado Occurrence				British Empire, Early 1920s		HIV (U.S.)			Aquifers: Distribution and Recharge
	Areas of Strong Tornado Occurrence	Areas of Strong Tornado Occurrence	Areas of Strong Tornado Occurrence	Areas of Strong Tornado Occurrence	Canada	Newfoundland	Class	Rank	Infections per 100,000 people	very high (>300)	high (100–300)	medium (20–100)	low (2–20)	very low (<2)	high (100–300)	medium (20–100)	low–very low (<20)	very high–high (>100)	medium–very low (<100)
Alaska								44	122			10.9%						1.73%	69.2%
Arizona	5	1						23	283			2.82%	3.38%	7.86%			26.1%		30.0%
Utah	2							43	126			19.0%	13.5%	4.33%			52.4%		8.18%
Yukon					100%												2.68%	1.03%	94.3%
Northwest Territories					98.8%										0.393%	14.9%	20.5%		0.340%
District of Columbia								1	2.26e+3		100%
Florida	31	6						5	613		67.8%				3.90%
Idaho	1							48	83.8			0.187%	2.97%	8.14%	5.84%		27.5%	16.7%	38.6%
New Hampshire	2				0.227%			45	112									100%
Rhode Island								22	292									95.4%
Vermont	1				0.301%			42	133									100%
Washington	1							29	220	9.44%				21.7%	1.72%	5.32%	11.6%	26.7%	12.4%
Wyoming	15	3						51	73.0				9.28%				70.8%		0.149%
Nunavut					97.0%												1.56%		18.2%
Montana	8	4						50	75.0							1.96%	56.5%	4.73%	1.30%
Maine					0.770%			38	141									99.6%	0.281%
North Dakota	38	6	5					49	83.4							25.0%	35.7%		38.6%
Kentucky	87	26	2					31	210		4.79%				60.6%			34.6%
Nova Scotia					93.4%										25.1%			6.85%
Virginia	28	8						20	331		25.5%				28.7%			45.7%
Delaware	3							9	409		97.7%							1.87%
Prince Edward Island					61.5%										98.8%
Saskatchewan	7				100%										7.13%	4.36%	15.3%	6.27%	23.7%
Mississippi	162	45	7	2				13	392		80.4%				0.601%			11.5%
West Virginia	4							40	136						99.3%			0.714%
Nebraska	67	13	7					37	146			45.3%	37.3%			4.89%			3.30%
Texas	193	46	7					11	405		15.3%	1.57%	15.4%			1.38%	14.5%	1.86%	6.12%
Missouri	95	36	7	1				25	249		5.80%				47.7%	11.5%		24.4%	9.83%
Louisiana	93	15	2					6	553		99.6%
Hawaii								33	200						7.83%		2.03%
North Carolina	54	12						14	374		38.6%				0.266%			54.6%
Oregon	2							32	202	4.58%				2.26%	3.46%	4.92%	49.2%	17.6%	0.416%
New Brunswick					98.3%										0.131%			55.2%	0.167%
Alabama	149	34	13	2				17	342		52.2%				32.1%			10.6%
New Mexico	7							28	222				9.01%	8.20%		2.38%	17.5%		42.2%
Kansas	82	56	10	1				39	139			13.6%	26.2%					18.1%	41.9%
Wisconsin	32	11						41	134						42.1%	16.2%		35.1%
British Columbia	1				99.0%						0.939%				8.63%	3.82%		42.0%	15.4%
Newfoundland and Labrador					1.10%	97.5%												63.0%	10.9%
New Jersey	2	1						7	468		62.4%				37.3%
South Carolina	46	15	1					12	405		62.7%							37.3%
Michigan	20	3			0.112%			35	199						26.5%			66.0%
Alberta	9				100%						11.4%	3.76%			18.2%	32.1%	8.32%	2.17%	3.59%
Connecticut								16	345									99.9%
Pennsylvania	31	3						19	335		1.35%				83.5%			10.2%
Colorado	25	3						24	269			3.69%	14.3%	3.67%		9.04%	16.4%		46.7%
Nevada								8	419				0.846%	77.8%			0.958%	0.158%	10.3%
Massachusetts	2	1						15	354							0.204%		98.0%
Georgia	90	31	4					4	644		50.4%				4.39%			36.4%
New York	17	1			0.168%			2	762		2.89%				5.91%			91.1%
Maryland	8		1					3	655		64.7%				13.9%			20.7%
Québec	30	1			99.3%	0.194%									0.272%			70.7%	19.6%
Manitoba	5	4	1	1	99.9%										1.61%	4.56%	6.78%	4.33%	51.3%
Oklahoma	104	29	8	2				34	200				9.60%		2.65%	7.80%		23.7%	54.6%
Tennessee	82	27	8					21	314		21.5%				71.6%			3.39%
Ontario	46	1			99.9%										13.7%	8.23%	4.40%	59.7%	1.73%
California	3							10	406		1.53%	8.91%	2.60%	8.90%	3.94%	0.295%	0.750%	14.0%	3.26%
Arkansas	105	23	4					27	239		49.6%				14.2%			36.2%
South Dakota	47	7	4					47	94.4			4.24%	4.28%			9.35%	8.75%		73.3%
Ohio	42	7	3					26	240						88.6%			3.31%
Indiana	58	18	1					30	211						65.5%	0.222%		12.0%
Minnesota	60	11	4		0.161%			36	190						7.33%	24.3%		29.3%	39.1%
Iowa	86	17	4	1				46	111						38.7%	26.5%		11.3%	6.08%
Illinois	108	21	6					18	337		0.557%				94.5%	0.407%

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