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 | 4.50–4.59 pH | 4.60–4.69 pH | 4.70–4.79 pH | 4.80–4.89 pH | 4.90–4.99 pH | 5.00–5.09 pH | 5.10–5.19 pH | 5.20–5.29 pH | ≥5.30 pH | |
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Alaska | 7.66% | 55.2% | 19.9% | ||||||||||||||||||
Yukon | 7.00% | 59.8% | 26.1% | 7.10% | |||||||||||||||||
Northwest Territories | 5.77% | 26.0% | 42.2% | 3.09% | |||||||||||||||||
Nunavut | 1.70% | 21.4% | 1.54% | ||||||||||||||||||
Nova Scotia | 19.0% | 8.02% | |||||||||||||||||||
Prince Edward Island | 98.5% | ||||||||||||||||||||
Saskatchewan | 18.8% | 50.7% | 20.5% | ||||||||||||||||||
New Brunswick | 31.5% | 64.2% | 2.38% | ||||||||||||||||||
British Columbia | 1.59% | 35.7% | 19.7% | 2.10% | |||||||||||||||||
Newfoundland and Labrador | 2.13% | 3.18% | 1.22% | ||||||||||||||||||
Alberta | 2.96% | 41.2% | 52.3% | ||||||||||||||||||
Québec | 9.73% | 2.25% | 18.5% | 22.7% | 14.4% | ||||||||||||||||
Manitoba | 3.86% | 21.7% | 27.1% | 47.3% | |||||||||||||||||
Ontario | 2.04% | 56.2% | 35.4% | 2.08% | |||||||||||||||||
Arizona | 8.64% | 10.8% | 6.36% | 10.3% | 8.92% | 4.76% | 1.23% | 98.8% | |||||||||||||
Utah | 6.90% | 15.9% | 5.97% | 1.69% | 98.3% | ||||||||||||||||
District of Columbia | 100% | 100% | |||||||||||||||||||
Florida | 9.02% | 56.6% | 20.8% | 3.46% | 1.32% | 13.8% | 25.9% | ||||||||||||||
Idaho | 5.95% | 12.1% | 9.81% | 31.7% | 4.63% | 95.4% | |||||||||||||||
New Hampshire | 94.4% | 5.56% | 72.0% | 27.9% | |||||||||||||||||
Rhode Island | 3.91% | 2.00% | 3.88% | ||||||||||||||||||
Vermont | 100% | 95.7% | 4.07% | ||||||||||||||||||
Washington | 1.35% | 57.1% | 1.44% | 23.4% | 70.9% | ||||||||||||||||
Wyoming | 5.38% | 5.86% | 13.2% | 100% | |||||||||||||||||
Montana | 1.73% | 42.7% | 23.7% | 7.99% | 9.26% | 90.7% | |||||||||||||||
Maine | 79.8% | 14.7% | 5.13% | 17.3% | 69.8% | 10.8% | |||||||||||||||
North Dakota | 95.7% | 4.33% | 100% | ||||||||||||||||||
Kentucky | 41.2% | 58.8% | 1.72% | 54.3% | 1.61% | 9.53% | |||||||||||||||
Virginia | 5.25% | 53.9% | 38.5% | 2.22% | 3.50% | 1.66% | 15.4% | ||||||||||||||
Delaware | 99.2% | 17.4% | 81.8% | ||||||||||||||||||
Mississippi | 13.6% | 19.8% | 65.6% | 14.3% | 79.0% | 5.27% | |||||||||||||||
West Virginia | 97.0% | 3.04% | 7.63% | 45.0% | 12.8% | 8.92% | |||||||||||||||
Nebraska | 38.0% | 62.0% | 100% | ||||||||||||||||||
Texas | 1.43% | 21.8% | 34.0% | 42.5% | 8.53% | 1.49% | 4.74% | 5.19% | 56.4% | ||||||||||||
Missouri | 100% | 26.1% | 26.9% | 12.0% | 34.2% | ||||||||||||||||
Louisiana | 2.08% | 60.9% | 36.6% | 41.6% | 42.5% | 8.80% | 4.48% | 2.23% | |||||||||||||
North Carolina | 16.4% | 81.1% | 2.09% | 1.35% | 37.2% | 1.72% | 9.88% | ||||||||||||||
Oregon | 7.84% | 63.3% | 28.9% | 2.68% | 97.3% | ||||||||||||||||
Alabama | 14.4% | 11.5% | 12.9% | 58.4% | 84.6% | 13.4% | |||||||||||||||
New Mexico | 3.65% | 6.22% | 12.8% | 2.01% | 14.3% | 4.15% | 91.3% | ||||||||||||||
Kansas | 100% | 100% | |||||||||||||||||||
Wisconsin | 19.7% | 79.8% | 4.01% | 46.8% | 27.3% | 21.3% | |||||||||||||||
New Jersey | 28.5% | 71.2% | 5.98% | 36.6% | 32.6% | 23.7% | |||||||||||||||
South Carolina | 1.10% | 75.7% | 23.2% | 33.6% | 64.2% | 2.08% | |||||||||||||||
Michigan | 4.25% | 65.7% | 11.8% | 24.0% | 10.0% | 4.73% | 13.3% | ||||||||||||||
Connecticut | 99.9% | 49.9% | 50.0% | ||||||||||||||||||
Pennsylvania | 14.0% | 81.5% | 4.50% | 3.58% | 34.8% | 29.1% | 10.8% | ||||||||||||||
Colorado | 13.8% | 53.9% | 10.3% | 3.14% | 1.85% | 3.55% | 88.3% | ||||||||||||||
Nevada | 13.2% | 33.3% | 53.5% | 100% | |||||||||||||||||
Massachusetts | 91.5% | 6.67% | 98.2% | ||||||||||||||||||
Georgia | 2.02% | 11.8% | 34.0% | 52.1% | 7.01% | 3.21% | 2.51% | 3.47% | |||||||||||||
New York | 42.9% | 2.90% | 4.25% | 52.6% | 35.3% | ||||||||||||||||
Maryland | 11.3% | 16.7% | 71.1% | 12.5% | 29.8% | 10.3% | |||||||||||||||
Oklahoma | 94.0% | 6.04% | 2.73% | 5.70% | 91.6% | ||||||||||||||||
Tennessee | 95.3% | 4.67% | 5.63% | 19.5% | 14.5% | 3.55% | |||||||||||||||
California | 46.0% | 7.90% | 27.9% | 99.7% | |||||||||||||||||
Arkansas | 100% | 17.5% | 40.8% | 7.44% | 10.2% | ||||||||||||||||
South Dakota | 61.9% | 38.1% | 100% | ||||||||||||||||||
Ohio | 77.5% | 20.4% | 5.07% | 9.56% | 59.7% | 23.0% | |||||||||||||||
Indiana | 1.92% | 97.6% | 12.8% | 4.37% | 8.75% | 5.18% | |||||||||||||||
Minnesota | 22.5% | 75.0% | 2.49% | 2.86% | 4.42% | 92.3% | |||||||||||||||
Iowa | 30.7% | 69.3% | 1.50% | 98.5% | |||||||||||||||||
Illinois | 38.2% | 58.7% | 3.07% | 39.9% | 27.0% | 15.0% | 3.08% | 9.73% |
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