South Atlantic High

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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.

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