A föhn wind or foehn wind is a type of dry down-slope wind that occurs in the lee (downwind side) of a mountain range. It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of its moisture on windward slopes (see orographic lift). As a consequence of the different adiabatic lapse rates of moist and dry air, the air on the leeward slopes becomes warmer than equivalent elevations on the windward slopes. Föhn winds can raise temperatures by as much as 30 °C (54 °F) in just a matter of hours. Central Europe enjoys a warmer climate due to the Föhn, as moist winds off the Mediterranean Sea blow over the Alps.
Read more about Foehn Wind: Effects, The Cause of Warm, Dry Conditions On The Lee Side, Etymology, Local Examples, In Popular Culture, Fön Trademark
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“Who has seen the wind? Neither you nor I:
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—Christina Georgina Rossetti (1830–1894)