High Pressure
North AmericaPhysical EnvironmentA region where atmospheric pressure at the surface is greater than surrounding areas
NOAAA map highlights the high-pressure regions in North America with a letter H enclosed in a circle. Near Columbia Kootenay Mountain and, near Ottawa.
High Pressure | Areas of Strong Tornado Occurrence | Areas of Strong Tornado Occurrence | Areas of Strong Tornado Occurrence | Areas of Strong Tornado Occurrence | Continental Shelf | Canada | United States | |
|---|---|---|---|---|---|---|---|---|
Alaska | 1.23% | 97.8% | ||||||
Arizona | 5 | 1 | 100% | |||||
Utah | 2 | 100% | ||||||
Yukon | 100% | |||||||
Northwest Territories | 0.420% | 98.7% | ||||||
District of Columbia | 100% | |||||||
Florida | 31 | 6 | 1.79% | 98.6% | ||||
Idaho | 1 | 100% | ||||||
New Hampshire | 2 | 0.233% | 99.8% | |||||
Rhode Island | 5.84% | 92.2% | ||||||
Vermont | 1 | 0.398% | 99.6% | |||||
Washington | 1 | 0.997% | 98.9% | |||||
Wyoming | 15 | 3 | 100% | |||||
Nunavut | 1.49% | 96.8% | ||||||
Montana | 8 | 4 | 100% | |||||
Maine | 0.686% | 0.515% | 98.3% | |||||
North Dakota | 38 | 6 | 5 | 100% | ||||
Kentucky | 87 | 26 | 2 | 100% | ||||
Nova Scotia | 3.29% | 93.8% | ||||||
Virginia | 28 | 8 | 0.705% | 99.2% | ||||
Delaware | 3 | 2.06% | 96.8% | |||||
Prince Edward Island | 12.7% | 61.6% | ||||||
Saskatchewan | 7 | 99.9% | ||||||
Mississippi | 162 | 45 | 7 | 2 | 99.9% | |||
West Virginia | 4 | 100% | ||||||
Nebraska | 67 | 13 | 7 | 100% | ||||
Texas | 193 | 46 | 7 | 0.261% | 99.7% | |||
Missouri | 95 | 36 | 7 | 1 | 100% | |||
Louisiana | 93 | 15 | 2 | 1.29% | 98.1% | |||
Hawaii | 74.5% | |||||||
North Carolina | 54 | 12 | 0.611% | 98.5% | ||||
Oregon | 2 | 99.9% | ||||||
New Brunswick | 0.785% | 98.6% | 0.334% | |||||
Alabama | 149 | 34 | 13 | 2 | 0.101% | 99.9% | ||
New Mexico | 7 | 100% | ||||||
Kansas | 82 | 56 | 10 | 1 | 100% | |||
Wisconsin | 32 | 11 | 100% | |||||
British Columbia | 1 | 1 | 1.05% | 96.4% | 2.51% | |||
Newfoundland and Labrador | 2.04% | 98.6% | ||||||
New Jersey | 2 | 1 | 2.40% | 96.9% | ||||
South Carolina | 46 | 15 | 1 | 99.9% | ||||
Michigan | 20 | 3 | 0.114% | 99.9% | ||||
Alberta | 9 | 100% | ||||||
Connecticut | 0.150% | 99.4% | ||||||
Pennsylvania | 31 | 3 | 100% | |||||
Colorado | 25 | 3 | 100% | |||||
Nevada | 100% | |||||||
Massachusetts | 2 | 1 | 4.75% | 93.6% | ||||
Georgia | 90 | 31 | 4 | 0.232% | 99.9% | |||
New York | 17 | 1 | 0.761% | 0.190% | 99.1% | |||
Maryland | 8 | 1 | 2.12% | 97.4% | ||||
Québec | 1 | 30 | 1 | 0.215% | 99.5% | |||
Manitoba | 5 | 4 | 1 | 1 | 99.9% | |||
Oklahoma | 104 | 29 | 8 | 2 | 100% | |||
Tennessee | 82 | 27 | 8 | 100% | ||||
Ontario | 46 | 1 | 99.9% | |||||
California | 3 | 0.133% | 99.5% | |||||
Arkansas | 105 | 23 | 4 | 100% | ||||
South Dakota | 47 | 7 | 4 | 100% | ||||
Ohio | 42 | 7 | 3 | 100% | ||||
Indiana | 58 | 18 | 1 | 100% | ||||
Minnesota | 60 | 11 | 4 | 0.159% | 99.8% | |||
Iowa | 86 | 17 | 4 | 1 | 100% | |||
Illinois | 108 | 21 | 6 | 100% | ||||
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