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foehn A warm, dry, wind blowing down the leeward slope of a mountain and across a valley floor or pain. In contrast, a cold wind blowing down a mountain slope is called a fall wind. Also in contrast, a fall wind can occur from the relaxation of updrafts, or simply cold heavy air falling down the hill. A foehn must be driven down the hill by a local weather pattern. The Santa Ana is a famous foehn than can affect mariners. The Chinook is an inland example. See G243 for a list of maritime local winds.

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