High- and Low-Pressure Zones, January
WorldPhysical EnvironmentLocations of high- and low-atmospheric pressure at mean sea level during January.
A map illustrates high- and low-pressure zones worldwide for January, with high-pressure zones marked in red and low-pressure zones in blue.
High-Pressure Zones are found in Western North America (1,022 millibars), Northwest Africa (1,024 millibars), North-central Asia (1,044 millibars), Southeast Pacific (1,018 millibars), South Atlantic (1,022 millibars), South Indian Ocean (1,022 millibars)
Low-Pressure Zones are found in North Pacific near the Aleutian Islands (984 millibars), North Atlantic near Greenland and Iceland (992 millibars), along the equator in the Central Pacific Ocean, Central Africa, and Western Pacific Ocean, and around the coasts of Antarctica (three lows at 980 millibars).
High | Areas of serious concern | Areas of some concern | Stable terrain | Nonvegetated land | Evergreen forest | Deciduous forest | Water | Mixed forest | Shrublands | Savannas | Grasslands | Permanent wetlands | Urban and built-up | Cropland and natural vegetation | Snow and ice | Barren or sparsely vegetated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alaska | 0.154% | 0.877% | 0.260% | 33.1% | 23.3% | 3.90% | 0.194% | ||||||||||
Arizona | 30.7% | 40.9% | 28.4% | 1.24% | 82.2% | 0.905% | 12.8% | 2.58% | |||||||||
Utah | 1 | 13.6% | 86.4% | 1.37% | 71.1% | 6.04% | |||||||||||
Yukon | 100% | 11.0% | 34.4% | 44.3% | 0.183% | 4.06% | |||||||||||
Northwest Territories | 3.06% | 8.23% | 2.25% | 0.109% | 50.3% | 0.342% | 0.521% | 0.256% | |||||||||
District of Columbia | 100% | 90.9% | 9.14% | ||||||||||||||
Florida | 99.0% | 0.732% | 69.7% | 6.73% | 2.76% | 0.989% | |||||||||||
Idaho | 12.7% | 87.3% | 34.0% | 57.6% | 2.52% | ||||||||||||
New Hampshire | 100% | 100% | |||||||||||||||
Rhode Island | 95.0% | 42.8% | 46.8% | ||||||||||||||
Vermont | 2.39% | 97.6% | 52.7% | 32.3% | 14.6% | ||||||||||||
Washington | 12.5% | 11.9% | 5.51% | 38.7% | 30.4% | 2.11% | |||||||||||
Wyoming | 3.04% | 97.0% | 5.80% | 92.0% | |||||||||||||
Nunavut | 0.587% | 17.6% | 0.661% | 14.7% | |||||||||||||
Montana | 5.14% | 83.8% | 18.5% | 76.4% | 1.52% | ||||||||||||
Maine | 0.171% | 80.4% | 98.8% | ||||||||||||||
North Dakota | 92.0% | 8.03% | 23.6% | 1.29% | |||||||||||||
Kentucky | 1.37% | 98.6% | 34.2% | 65.3% | |||||||||||||
Nova Scotia | 18.4% | 77.1% | |||||||||||||||
Virginia | 25.7% | 74.1% | 37.9% | 29.7% | 1.92% | 8.03% | |||||||||||
Delaware | 99.3% | 3.32% | 94.5% | ||||||||||||||
Prince Edward Island | 96.6% | 54.0% | |||||||||||||||
Saskatchewan | 11.6% | 38.7% | 49.7% | 40.6% | 5.40% | 2.31% | 7.63% | 4.39% | 36.0% | ||||||||
Mississippi | 18.4% | 64.8% | 16.8% | 29.5% | 9.44% | 22.9% | |||||||||||
West Virginia | 26.7% | 73.3% | 96.2% | 1.85% | |||||||||||||
Nebraska | 94.5% | 5.51% | 60.9% | 39.1% | |||||||||||||
Texas | 13.8% | 77.2% | 8.74% | 16.6% | 11.5% | 63.9% | 0.593% | 0.322% | |||||||||
Missouri | 53.7% | 46.3% | 13.6% | 1.69% | 84.7% | ||||||||||||
Louisiana | 0.161% | 18.9% | 29.5% | 3.55% | 21.5% | 12.9% | 26.3% | ||||||||||
Hawaii | 1.16% | 57.1% | |||||||||||||||
North Carolina | 99.4% | 2.93% | 0.571% | 11.8% | 22.1% | ||||||||||||
Oregon | 0.146% | 13.9% | 59.9% | 39.9% | 46.3% | 1.78% | |||||||||||
New Brunswick | 35.3% | 63.9% | 98.0% | ||||||||||||||
Alabama | 73.2% | 26.7% | 1.53% | 41.9% | 10.2% | 1.99% | |||||||||||
New Mexico | 5.86% | 92.2% | 1.91% | 2.71% | 48.6% | 33.8% | 0.141% | ||||||||||
Kansas | 64.1% | 35.9% | 76.0% | 8.38% | |||||||||||||
Wisconsin | 41.4% | 38.2% | 20.4% | 5.34% | 0.733% | 24.3% | 69.7% | ||||||||||
British Columbia | 3.99% | 0.242% | 10.9% | 4.59% | 0.944% | 0.141% | 0.358% | 0.225% | 5.56% | ||||||||
Newfoundland and Labrador | 24.7% | 22.0% | 15.0% | 29.3% | 14.1% | 2.34% | |||||||||||
New Jersey | 99.1% | 15.9% | 31.5% | 35.6% | 7.11% | ||||||||||||
South Carolina | 90.8% | 9.02% | 3.99% | 13.8% | 0.475% | 4.46% | |||||||||||
Michigan | 70.3% | 29.6% | 1.66% | 3.94% | 16.6% | 1.80% | 48.8% | ||||||||||
Alberta | 3.89% | 14.0% | 65.8% | 24.3% | 30.3% | 0.208% | 3.41% | 0.266% | |||||||||
Connecticut | 1.86% | 98.1% | 98.8% | ||||||||||||||
Pennsylvania | 12.1% | 87.9% | 54.7% | 1.93% | 18.7% | ||||||||||||
Colorado | 35.4% | 64.6% | 7.58% | 0.276% | 88.5% | ||||||||||||
Nevada | 54.5% | 39.8% | 0.655% | 0.345% | 2.21% | 65.5% | 1.16% | ||||||||||
Massachusetts | 0.575% | 26.1% | 56.3% | 9.42% | |||||||||||||
Georgia | 64.0% | 35.9% | 2.03% | 1.36% | 6.94% | 16.9% | 1.91% | 2.16% | 0.313% | ||||||||
New York | 2.49% | 25.0% | 27.2% | 0.385% | 15.0% | 0.153% | 0.584% | ||||||||||
Maryland | 23.5% | 74.6% | 11.5% | 2.19% | 81.3% | ||||||||||||
Québec | 0.218% | 94.2% | 5.39% | 3.99% | 38.7% | 9.24% | 4.66% | 1.11% | |||||||||
Manitoba | 5.67% | 12.3% | 81.9% | 37.5% | 3.53% | 5.69% | 25.2% | 2.44% | 3.56% | 13.2% | |||||||
Oklahoma | 31.0% | 69.0% | 2.23% | 13.4% | 81.7% | 2.65% | |||||||||||
Tennessee | 4.84% | 95.2% | 23.2% | 3.17% | 14.9% | ||||||||||||
Ontario | 8.22% | 91.7% | 32.1% | 0.585% | 0.132% | 3.80% | 0.824% | 18.9% | 0.176% | 6.74% | |||||||
California | 10.6% | 60.7% | 22.9% | 5.57% | 25.6% | 27.5% | 1.33% | 8.18% | 1.87% | 10.1% | 0.505% | ||||||
Arkansas | 31.1% | 68.9% | 10.7% | 33.2% | 2.79% | 0.791% | 52.5% | ||||||||||
South Dakota | 56.9% | 43.1% | 1.78% | 57.1% | 41.1% | ||||||||||||
Ohio | 100% | 15.3% | 0.254% | 84.5% | |||||||||||||
Indiana | 2.05% | 97.9% | 3.37% | 0.562% | 96.1% | ||||||||||||
Minnesota | 26.5% | 61.6% | 11.9% | 0.174% | 28.8% | 0.689% | 70.4% | ||||||||||
Iowa | 99.1% | 0.440% | 100% | ||||||||||||||
Illinois | 96.6% | 3.35% | 4.06% | 95.9% | |||||||||||||