A Foehn, or Föhn, is a type of dry, relatively warm downslope wind in the lee of a mountain range. It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped m
Dissolving Föhn clouds over Cumbre Nueva, La Palma, at an elevation of 1,400 m (4,600 ft)
The warm moist air from northern Italy is blocked on the windward side, loses much of its water vapor content, and descends on the French plateau and valley of the Mont-Cenis range in the Maurienne valley.
Rotor cloud revealing overturning and turbulence above the lee slopes of the Antarctic Peninsula during a westerly Foehn event
Foehn clouds upon the Karawanken mountain range, Carinthia, Austria
Chinook winds, or simply chinooks, are two types of prevailing warm, generally westerly winds in western North America: Coastal Chinooks and interior Chinooks. The coastal Chinooks are persistent seas
Foehn wind
…preparations of aspirin combined with caffeine, codeine and the like will sometimes include Föhnkrankheit among the indications. Evidence for effects from Chinook winds remains anecdotal, as it does for New Zealand's Nor'wester. In some regions, Foehn winds are associated with causing circulatory problems, headaches…
Adiabatic warming of downward moving air; this produces the warm föhn wind called a "Chinook" (pronounced shin‑uk) in interior North America.
Chinook arch over Calgary, 6 January 2003
The extreme colors of a Chinook arch
Chinook arch in Calgary, Alberta, 19 November 2005