Wikipedia definition
1. Roaring FortiesThe Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. Air displaced from the Equator towards the South Pole, which travels close to the surface between the latitudes of 30 and 60 degrees south, combines with the earth's rotation to cause west-to-east air currents.
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