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High- and Low-Pressure Zones, January

WorldPhysical Environment

Locations of high- and low-atmospheric pressure at mean sea level during January.

nature

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).

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High- and Low-Pressure Zones, January

Water Resources Vulnerability

Major Industrial Centers

High

No data

Arid and low water use

Low (<10%)

Low-medium (10-20%)

Medium-high (20-40%)

High (40-80%)

Extremely high (>80%)

Akron

Boston

Chicago

Dallas

Detroit

Hamilton

Hollywood

Kansas City

Los Angles

Ottawa

Philadelphia

Pittsburg

Quebec

San Francisco (Silicon Valley)

Sarnia

Seattle

Alaska
0.132%87.9%0.193%0.154%1.32%
Arizona
3.34%9.37%6.97%0.448%4.52%
Utah
120.8%13.7%0.313%0.420%49.5%
Yukon
0.923%99.0%
Northwest Territories
0.342%3.62%
District of Columbia
100%
Florida
10.4%12.0%0.279%0.266%0.590%
Idaho
0.772%13.8%28.4%8.83%44.9%
New Hampshire
17.2%33.7%40.5%8.46%
Rhode Island
0.183%86.5%6.09%
Vermont
7.27%88.3%4.41%
Wyoming
21.7%0.541%70.3%
Nunavut
0.979%18.2%
Montana
28.7%2.60%14.6%5.24%35.2%
Maine
94.9%2.65%0.228%0.817%
North Dakota
7.38%3.22%4.45%0.249%9.67%36.7%
Kentucky
76.6%17.7%5.68%
Nova Scotia
0.182%80.1%
Virginia
11.9%0.775%16.4%1.64%
Delaware
0.105%37.7%61.1%
Prince Edward Island
98.5%
Saskatchewan
4.25%59.9%2.62%2.54%2.67%0.868%
Mississippi
74.5%1.57%23.9%
West Virginia
63.6%17.6%14.6%
Nebraska
0.605%3.54%22.3%73.5%
Louisiana
54.5%20.6%5.75%
Hawaii
7.82%
North Carolina
0.116%12.2%54.7%3.14%0.982%
Oregon
14.3%48.2%11.8%4.82%0.772%0.847%
New Brunswick
99.5%
Alabama
92.6%5.45%0.987%
New Mexico
30.3%0.128%7.32%21.7%
Kansas
0.176%1.82%13.8%68.4%
Wisconsin
5.67%25.0%40.8%9.68%
British Columbia
92.0%1.55%0.285%
Newfoundland and Labrador
74.5%
New Jersey
0.162%3.07%94.0%1.76%
South Carolina
0.748%24.6%36.2%
Alberta
3.52%56.8%0.267%4.01%3.67%11.4%
Connecticut
0.460%29.6%24.9%23.8%1.35%
Colorado
0.795%9.40%85.2%
Nevada
8.21%0.731%1.40%0.413%2.80%24.0%
Georgia
8.71%47.0%37.9%
New York
25.4%5.89%56.3%5.19%0.401%
Maryland
0.151%4.45%64.3%1.05%8.49%
Manitoba
0.656%83.1%11.7%2.04%1.39%
Oklahoma
11.4%5.60%4.28%17.9%30.0%
Tennessee
90.1%5.50%
Arkansas
12.6%46.8%33.2%6.01%
South Dakota
32.7%3.47%37.3%22.0%
Indiana
0.434%1.19%8.61%4.78%
Minnesota
21.0%3.81%13.1%23.4%22.0%
Iowa
26.6%12.5%44.0%16.3%0.628%
Washington
72.6%3.37%5.42%0.287%6.53%1
Texas
4.07%3.41%2.84%1.94%22.5%2.71%1
Missouri
45.5%14.9%0.131%5.37%1
Michigan
56.0%3.00%4.63%9.70%1
Pennsylvania
1.42%27.8%49.9%3.96%11
Massachusetts
0.206%0.166%33.6%8.30%30.7%1
Québec
99.1%0.240%1
Ontario
97.2%1.67%1.13%111
California
0.688%12.5%0.232%17.8%2.26%1.00%111
Ohio
3.42%0.721%29.0%1
Illinois
30.9%0.187%44.1%9.75%1
0.16.0