chinook wind

Chinook winds, often just called chinooks, are a variety of Föhn winds pattern observed in the interior West of North America, where the Canadian Prairies and Great Plains end and the mountains begin. These wind patterns are named for the country of the Chinook Native Americans, which lies in the direction these winds were realized to originate from. The same term is used on the British Columbia Coast and in the Puget Sound area to designate a warm, very wet, southwesterly (from the direction of the Chinook country) wind, which is in fact the same weather system prior to its being stripped of its moisture by the various mountain ranges in between.
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Noun
1. a warm dry wind blowing down the eastern slopes of the Rockies
(synonym) chinook, snow eater
(hypernym) wind, air current, current of air

[USA] VENTO INVERNALE CHE SOFFIA SUL VERSANTE ORIENTALE DELLE MONTAGNE ROCCIOSE