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Thunderstorm Occurrence

North AmericaPhysical Environment

Thunderstorm occurrence in North America

Thunderstorms per year in North America: The highest occurrence region (light brown), includes Texas, Oklahoma, and Kansas. Western U.S.(California, Nevada), and northern Canada (Yukon, Northwest Territories), have the lowest occurrences (black).

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Display by:	Thunderstorm Occurrence												Major Waterfalls and Cataracts																					Manganese Mines
	100 and above	81–100	71–80	61–70	51–60	41–50	31–40	21–30	11–20	6–10	2–5	1 and below	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	Manganese Mines
Alaska										7.66%	55.2%	19.9%
Yukon									7.00%	59.8%	26.1%	7.10%
District of Columbia								100%
Florida	9.02%	56.6%	20.8%	3.46%
Idaho						5.95%	12.1%	9.81%	31.7%
New Hampshire								94.4%	5.56%
Rhode Island								3.91%
Vermont								100%
Nunavut										1.70%	21.4%	1.54%
Maine								79.8%	14.7%	5.13%
North Dakota							95.7%	4.33%
Nova Scotia									19.0%	8.02%
Delaware								99.2%
Prince Edward Island									98.5%
Saskatchewan								18.8%	50.7%	20.5%
Mississippi			13.6%	19.8%	65.6%
Nebraska					38.0%	62.0%
Texas				1.43%	21.8%	34.0%	42.5%
Missouri					100%
North Carolina					16.4%	81.1%	2.09%
New Brunswick								31.5%	64.2%	2.38%
Alabama		14.4%	11.5%	12.9%	58.4%
Kansas					100%
Wisconsin						19.7%	79.8%
Newfoundland and Labrador										2.13%	3.18%	1.22%
New Jersey							28.5%	71.2%
Michigan						4.25%	65.7%	11.8%
Connecticut								99.9%
Pennsylvania						14.0%	81.5%	4.50%
Maryland						11.3%	16.7%	71.1%
Québec								9.73%	2.25%	18.5%	22.7%	14.4%
Manitoba							3.86%	21.7%	27.1%	47.3%
Oklahoma					94.0%	6.04%
South Dakota						61.9%	38.1%
Ohio						77.5%	20.4%
Indiana					1.92%	97.6%
Minnesota						22.5%	75.0%	2.49%
Iowa					30.7%	69.3%
Illinois					38.2%	58.7%	3.07%
Northwest Territories									5.77%	26.0%	42.2%	3.09%	1										1								1
Washington								1.35%	57.1%	1.44%										1
Kentucky					41.2%	58.8%												1
Virginia					5.25%	53.9%	38.5%	2.22%											1
British Columbia								1.59%	35.7%	19.7%	2.10%				1									1		1	1
Alberta							2.96%	41.2%	52.3%					1																1
Arizona					8.64%	10.8%	6.36%	10.3%	8.92%	4.76%																								48
Utah						6.90%	15.9%	5.97%																										15
Wyoming					5.38%	5.86%	13.2%																											1
Montana						1.73%	42.7%	23.7%	7.99%												1													24
West Virginia						97.0%	3.04%																					1						2
Louisiana			2.08%	60.9%	36.6%																													1
Oregon								7.84%	63.3%	28.9%						1						1							1			1	1	7
New Mexico			3.65%	6.22%	12.8%	2.01%	14.3%																											3
South Carolina				1.10%	75.7%	23.2%																												1
Colorado				13.8%	53.9%	10.3%	3.14%																											15
Nevada							13.2%	33.3%	53.5%																									2
Massachusetts								91.5%	6.67%																									2
Georgia		2.02%	11.8%	34.0%	52.1%																													3
New York							42.9%	2.90%									1																	2
Tennessee					95.3%	4.67%																												1
Ontario							2.04%	56.2%	35.4%	2.08%															1									1
California									46.0%	7.90%	27.9%																							202
Arkansas					100%																													3

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