South Atlantic High

South Atlantic High is a semipermanent pressure high centered at about 25°S, 15°W, in the Atlantic Ocean. It is also called the St. Helena High. It can stretch thousands of miles across the South Atlantic affecting shipping. Sailors try to find a "corridor" through using the low-pressure systems forming off the coast of Brazil that move west pushing against the high pressure.

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Cyclones and anticyclones of the world (Centers of action)

Types	Extratropical Mesocyclone/Anticyclonic storm Polar Subtropical cyclone/Subtropical ridge Thermal Tropical

Anticyclones	Polar High Siberian High Azores High (Bermuda/North Atlantic) North American High (Canadian/Greenland) South Atlantic High (St.Helena) North Pacific High (Hawaii High) South Pacific High Kalahari High

Cyclones	Aleutian Low (Alaska/Far East Russia) Atlantic hurricane Australian Low (east coast) European windstorm Genoa Low Icelandic Low Kona storm (Hawaii) Nor'easter Pacific hurricane Polar vortex Typhoon Wake Low

Coordinates: 25°00′S 15°00′W / 25.000°S 15.000°W / -25.000; -15.000

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