Thunderstorm Occurrence
North AmericaPhysical EnvironmentThunderstorm occurrence in North America
NOAAThunderstorms 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).
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 | -1.75 to -1.5 | -1.5 to -1.25 | -1.25 to -1.0 | -1.0 to -0.75 | -0.5 to -0.25 | -0.25 to 0.25 | 0.5 to 0.75 | Settled 1750–1850 | Settled by 1750 | Settled by 1910 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Yukon | 7.00% | 59.8% | 26.1% | 7.10% | ||||||||||||||||||
Northwest Territories | 5.77% | 26.0% | 42.2% | 3.09% | ||||||||||||||||||
Alaska | 7.66% | 55.2% | 19.9% | 0.230% | ||||||||||||||||||
Nunavut | 1.70% | 21.4% | 1.54% | 0.349% | ||||||||||||||||||
Hawaii | 2.11% | 0.444% | 1.11% | 0.206% | 0.177% | 1.57% | ||||||||||||||||
Arizona | 8.64% | 10.8% | 6.36% | 10.3% | 8.92% | 4.76% | 1.44% | |||||||||||||||
Utah | 6.90% | 15.9% | 5.97% | 4.68% | 30.1% | |||||||||||||||||
District of Columbia | 100% | 100% | ||||||||||||||||||||
Florida | 9.02% | 56.6% | 20.8% | 3.46% | 0.528% | 35.0% | 1.81% | 44.5% | ||||||||||||||
Idaho | 5.95% | 12.1% | 9.81% | 31.7% | 17.6% | |||||||||||||||||
New Hampshire | 94.4% | 5.56% | 68.1% | 28.3% | 3.60% | |||||||||||||||||
Rhode Island | 3.91% | 4.64% | 2.94% | |||||||||||||||||||
Vermont | 100% | 97.2% | 2.78% | |||||||||||||||||||
Washington | 1.35% | 57.1% | 1.44% | 0.523% | 1.36% | 26.5% | ||||||||||||||||
Wyoming | 5.38% | 5.86% | 13.2% | 7.05% | ||||||||||||||||||
Montana | 1.73% | 42.7% | 23.7% | 7.99% | 22.9% | |||||||||||||||||
Maine | 79.8% | 14.7% | 5.13% | 0.133% | 60.5% | 4.65% | 34.3% | |||||||||||||||
North Dakota | 95.7% | 4.33% | 97.5% | |||||||||||||||||||
Kentucky | 41.2% | 58.8% | 100% | |||||||||||||||||||
Nova Scotia | 19.0% | 8.02% | 0.869% | 13.9% | 5.00% | |||||||||||||||||
Virginia | 5.25% | 53.9% | 38.5% | 2.22% | 0.126% | 27.6% | 72.3% | |||||||||||||||
Delaware | 99.2% | 0.762% | 99.6% | |||||||||||||||||||
Prince Edward Island | 98.5% | 1.45% | 21.9% | |||||||||||||||||||
Saskatchewan | 18.8% | 50.7% | 20.5% | 19.8% | ||||||||||||||||||
Mississippi | 13.6% | 19.8% | 65.6% | 98.9% | ||||||||||||||||||
West Virginia | 97.0% | 3.04% | 93.8% | 6.16% | ||||||||||||||||||
Nebraska | 38.0% | 62.0% | 84.7% | |||||||||||||||||||
Texas | 1.43% | 21.8% | 34.0% | 42.5% | 0.183% | 22.3% | 1.00% | |||||||||||||||
Missouri | 100% | 98.8% | 1.13% | |||||||||||||||||||
Louisiana | 2.08% | 60.9% | 36.6% | 0.120% | 80.3% | 9.57% | 5.23% | |||||||||||||||
North Carolina | 16.4% | 81.1% | 2.09% | 0.319% | 58.0% | 5.50% | ||||||||||||||||
Oregon | 7.84% | 63.3% | 28.9% | 2.57% | 45.6% | |||||||||||||||||
New Brunswick | 31.5% | 64.2% | 2.38% | 0.522% | 65.9% | 3.53% | ||||||||||||||||
Alabama | 14.4% | 11.5% | 12.9% | 58.4% | 98.2% | 1.78% | ||||||||||||||||
New Mexico | 3.65% | 6.22% | 12.8% | 2.01% | 14.3% | 7.36% | 6.25% | 57.8% | ||||||||||||||
Kansas | 100% | 99.9% | ||||||||||||||||||||
Wisconsin | 19.7% | 79.8% | 2.94% | 82.7% | ||||||||||||||||||
British Columbia | 1.59% | 35.7% | 19.7% | 2.10% | 0.181% | 1.58% | ||||||||||||||||
Newfoundland and Labrador | 2.13% | 3.18% | 1.22% | 0.356% | 1.24% | |||||||||||||||||
New Jersey | 28.5% | 71.2% | 0.329% | 1.38% | 98.3% | |||||||||||||||||
South Carolina | 1.10% | 75.7% | 23.2% | 49.6% | 50.3% | |||||||||||||||||
Michigan | 4.25% | 65.7% | 11.8% | 31.3% | 37.6% | |||||||||||||||||
Alberta | 2.96% | 41.2% | 52.3% | 11.0% | ||||||||||||||||||
Connecticut | 99.9% | 99.9% | ||||||||||||||||||||
Pennsylvania | 14.0% | 81.5% | 4.50% | 82.4% | 17.6% | |||||||||||||||||
Colorado | 13.8% | 53.9% | 10.3% | 3.14% | 88.3% | |||||||||||||||||
Nevada | 13.2% | 33.3% | 53.5% | 13.0% | ||||||||||||||||||
Massachusetts | 91.5% | 6.67% | 1.78% | 10.9% | 87.0% | |||||||||||||||||
Georgia | 2.02% | 11.8% | 34.0% | 52.1% | 90.2% | 4.67% | 5.08% | |||||||||||||||
New York | 42.9% | 2.90% | 0.105% | 83.0% | 2.86% | 3.57% | ||||||||||||||||
Maryland | 11.3% | 16.7% | 71.1% | 0.874% | 11.6% | 87.5% | ||||||||||||||||
Québec | 9.73% | 2.25% | 18.5% | 22.7% | 14.4% | 0.107% | 3.95% | |||||||||||||||
Manitoba | 3.86% | 21.7% | 27.1% | 47.3% | 7.10% | |||||||||||||||||
Oklahoma | 94.0% | 6.04% | 100% | |||||||||||||||||||
Tennessee | 95.3% | 4.67% | 100% | |||||||||||||||||||
Ontario | 2.04% | 56.2% | 35.4% | 2.08% | 9.16% | 1.76% | ||||||||||||||||
California | 46.0% | 7.90% | 27.9% | 0.105% | 1.21% | 26.0% | ||||||||||||||||
Arkansas | 100% | 100% | ||||||||||||||||||||
South Dakota | 61.9% | 38.1% | 82.4% | |||||||||||||||||||
Ohio | 77.5% | 20.4% | 100% | |||||||||||||||||||
Indiana | 1.92% | 97.6% | 100% | |||||||||||||||||||
Minnesota | 22.5% | 75.0% | 2.49% | 2.69% | 91.1% | |||||||||||||||||
Iowa | 30.7% | 69.3% | 45.5% | 54.5% | ||||||||||||||||||
Illinois | 38.2% | 58.7% | 3.07% | 98.6% | 1.40% | |||||||||||||||||
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