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Atlas (Beta)

High- and Low-Pressure Zones, January

WorldPhysical Environment

Locations 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).

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Display by:	High- and Low-Pressure Zones, January	Major Territorial Acquisitions (U.S.)
	High	Extent of U.S., 1803	Louisiana Purchase, 1803	West Florida, 1810–1813	British Cession, 1818	East Florida, 1819	Northern Maine, 1842	Texas Annexation, 1845	Oregon Country, 1846	Mexican Cession, 1848	Gadsden Purchase, 1853	Alaska, 1867	Hawaii, 1898
Alaska												94.5%
Arizona										76.2%	23.8%
Utah	1									100%
District of Columbia		97.6%
Florida						98.3%
Idaho									99.8%
New Hampshire		99.9%
Rhode Island		97.7%
Vermont		99.9%
Washington									99.4%
Wyoming			70.3%					4.53%	12.4%	12.7%
Montana			82.4%						17.6%
Maine		82.4%					16.6%
North Dakota			57.6%		42.4%
Kentucky		99.9%
Virginia		99.5%
Delaware		98.0%
Mississippi		92.2%		7.44%
West Virginia		100%
Nebraska			100%
Texas								99.5%
Missouri			99.7%
Louisiana			86.4%	12.4%
Hawaii													91.5%
North Carolina		99.2%
Oregon									99.8%
Alabama		95.7%		4.16%
New Mexico								57.5%		40.3%	2.23%
Kansas			91.7%					8.26%
Wisconsin		99.8%
British Columbia												1.43%
New Jersey		99.0%
South Carolina		99.6%
Michigan		99.9%
Connecticut		99.6%
Pennsylvania		100%
Colorado			41.3%					32.3%		26.4%
Nevada										99.9%
Massachusetts		98.1%
Georgia		99.8%
New York		99.4%
Maryland		96.9%
Oklahoma			91.6%					8.45%
Tennessee		99.9%
California										99.7%
Arkansas			99.8%
South Dakota			99.1%
Ohio		100%
Indiana		100%
Minnesota		33.8%	45.1%		20.9%
Iowa			99.8%
Illinois		99.7%

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