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 | 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 | 7.66% | 55.2% | 19.9% | 10.9% | 1.73% | 69.2% | ||||||||||||||||
Arizona | 8.64% | 10.8% | 6.36% | 10.3% | 8.92% | 4.76% | 2.82% | 3.38% | 7.86% | 26.1% | 30.0% | |||||||||||
Utah | 6.90% | 15.9% | 5.97% | 19.0% | 13.5% | 4.33% | 52.4% | 8.18% | ||||||||||||||
Yukon | 7.00% | 59.8% | 26.1% | 7.10% | 2.68% | 1.03% | 94.3% | |||||||||||||||
Northwest Territories | 5.77% | 26.0% | 42.2% | 3.09% | 0.393% | 14.9% | 20.5% | 0.340% | ||||||||||||||
District of Columbia | 100% | 100% | ||||||||||||||||||||
Florida | 9.02% | 56.6% | 20.8% | 3.46% | 67.8% | 3.90% | ||||||||||||||||
Idaho | 5.95% | 12.1% | 9.81% | 31.7% | 0.187% | 2.97% | 8.14% | 5.84% | 27.5% | 16.7% | 38.6% | |||||||||||
New Hampshire | 94.4% | 5.56% | 100% | |||||||||||||||||||
Rhode Island | 3.91% | 95.4% | ||||||||||||||||||||
Vermont | 100% | 100% | ||||||||||||||||||||
Washington | 1.35% | 57.1% | 1.44% | 9.44% | 21.7% | 1.72% | 5.32% | 11.6% | 26.7% | 12.4% | ||||||||||||
Wyoming | 5.38% | 5.86% | 13.2% | 9.28% | 70.8% | 0.149% | ||||||||||||||||
Nunavut | 1.70% | 21.4% | 1.54% | 1.56% | 18.2% | |||||||||||||||||
Montana | 1.73% | 42.7% | 23.7% | 7.99% | 1.96% | 56.5% | 4.73% | 1.30% | ||||||||||||||
Maine | 79.8% | 14.7% | 5.13% | 99.6% | 0.281% | |||||||||||||||||
North Dakota | 95.7% | 4.33% | 25.0% | 35.7% | 38.6% | |||||||||||||||||
Kentucky | 41.2% | 58.8% | 4.79% | 60.6% | 34.6% | |||||||||||||||||
Nova Scotia | 19.0% | 8.02% | 25.1% | 6.85% | ||||||||||||||||||
Virginia | 5.25% | 53.9% | 38.5% | 2.22% | 25.5% | 28.7% | 45.7% | |||||||||||||||
Delaware | 99.2% | 97.7% | 1.87% | |||||||||||||||||||
Prince Edward Island | 98.5% | 98.8% | ||||||||||||||||||||
Saskatchewan | 18.8% | 50.7% | 20.5% | 7.13% | 4.36% | 15.3% | 6.27% | 23.7% | ||||||||||||||
Mississippi | 13.6% | 19.8% | 65.6% | 80.4% | 0.601% | 11.5% | ||||||||||||||||
West Virginia | 97.0% | 3.04% | 99.3% | 0.714% | ||||||||||||||||||
Nebraska | 38.0% | 62.0% | 45.3% | 37.3% | 4.89% | 3.30% | ||||||||||||||||
Texas | 1.43% | 21.8% | 34.0% | 42.5% | 15.3% | 1.57% | 15.4% | 1.38% | 14.5% | 1.86% | 6.12% | |||||||||||
Missouri | 100% | 5.80% | 47.7% | 11.5% | 24.4% | 9.83% | ||||||||||||||||
Louisiana | 2.08% | 60.9% | 36.6% | 99.6% | ||||||||||||||||||
Hawaii | 7.83% | 2.03% | ||||||||||||||||||||
North Carolina | 16.4% | 81.1% | 2.09% | 38.6% | 0.266% | 54.6% | ||||||||||||||||
Oregon | 7.84% | 63.3% | 28.9% | 4.58% | 2.26% | 3.46% | 4.92% | 49.2% | 17.6% | 0.416% | ||||||||||||
New Brunswick | 31.5% | 64.2% | 2.38% | 0.131% | 55.2% | 0.167% | ||||||||||||||||
Alabama | 14.4% | 11.5% | 12.9% | 58.4% | 52.2% | 32.1% | 10.6% | |||||||||||||||
New Mexico | 3.65% | 6.22% | 12.8% | 2.01% | 14.3% | 9.01% | 8.20% | 2.38% | 17.5% | 42.2% | ||||||||||||
Kansas | 100% | 13.6% | 26.2% | 18.1% | 41.9% | |||||||||||||||||
Wisconsin | 19.7% | 79.8% | 42.1% | 16.2% | 35.1% | |||||||||||||||||
British Columbia | 1.59% | 35.7% | 19.7% | 2.10% | 0.939% | 8.63% | 3.82% | 42.0% | 15.4% | |||||||||||||
Newfoundland and Labrador | 2.13% | 3.18% | 1.22% | 63.0% | 10.9% | |||||||||||||||||
New Jersey | 28.5% | 71.2% | 62.4% | 37.3% | ||||||||||||||||||
South Carolina | 1.10% | 75.7% | 23.2% | 62.7% | 37.3% | |||||||||||||||||
Michigan | 4.25% | 65.7% | 11.8% | 26.5% | 66.0% | |||||||||||||||||
Alberta | 2.96% | 41.2% | 52.3% | 11.4% | 3.76% | 18.2% | 32.1% | 8.32% | 2.17% | 3.59% | ||||||||||||
Connecticut | 99.9% | 99.9% | ||||||||||||||||||||
Pennsylvania | 14.0% | 81.5% | 4.50% | 1.35% | 83.5% | 10.2% | ||||||||||||||||
Colorado | 13.8% | 53.9% | 10.3% | 3.14% | 3.69% | 14.3% | 3.67% | 9.04% | 16.4% | 46.7% | ||||||||||||
Nevada | 13.2% | 33.3% | 53.5% | 0.846% | 77.8% | 0.958% | 0.158% | 10.3% | ||||||||||||||
Massachusetts | 91.5% | 6.67% | 0.204% | 98.0% | ||||||||||||||||||
Georgia | 2.02% | 11.8% | 34.0% | 52.1% | 50.4% | 4.39% | 36.4% | |||||||||||||||
New York | 42.9% | 2.90% | 2.89% | 5.91% | 91.1% | |||||||||||||||||
Maryland | 11.3% | 16.7% | 71.1% | 64.7% | 13.9% | 20.7% | ||||||||||||||||
Québec | 9.73% | 2.25% | 18.5% | 22.7% | 14.4% | 0.272% | 70.7% | 19.6% | ||||||||||||||
Manitoba | 3.86% | 21.7% | 27.1% | 47.3% | 1.61% | 4.56% | 6.78% | 4.33% | 51.3% | |||||||||||||
Oklahoma | 94.0% | 6.04% | 9.60% | 2.65% | 7.80% | 23.7% | 54.6% | |||||||||||||||
Tennessee | 95.3% | 4.67% | 21.5% | 71.6% | 3.39% | |||||||||||||||||
Ontario | 2.04% | 56.2% | 35.4% | 2.08% | 13.7% | 8.23% | 4.40% | 59.7% | 1.73% | |||||||||||||
California | 46.0% | 7.90% | 27.9% | 1.53% | 8.91% | 2.60% | 8.90% | 3.94% | 0.295% | 0.750% | 14.0% | 3.26% | ||||||||||
Arkansas | 100% | 49.6% | 14.2% | 36.2% | ||||||||||||||||||
South Dakota | 61.9% | 38.1% | 4.24% | 4.28% | 9.35% | 8.75% | 73.3% | |||||||||||||||
Ohio | 77.5% | 20.4% | 88.6% | 3.31% | ||||||||||||||||||
Indiana | 1.92% | 97.6% | 65.5% | 0.222% | 12.0% | |||||||||||||||||
Minnesota | 22.5% | 75.0% | 2.49% | 7.33% | 24.3% | 29.3% | 39.1% | |||||||||||||||
Iowa | 30.7% | 69.3% | 38.7% | 26.5% | 11.3% | 6.08% | ||||||||||||||||
Illinois | 38.2% | 58.7% | 3.07% | 0.557% | 94.5% | 0.407% | ||||||||||||||||
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