Diablo wind is a regional term for the föhn wind that often occurs in the San Francisco Bay Area. The term is often used because many of the winds originate off of nearby Mount Diablo. Locally, the term "Santa Ana wind" is often also used, although that would more accurately refer to föhn winds in Southern California. A föhn wind or foehn wind occurs when a deep layer of prevailing wind is forced over a mountain range. ... USGS Satellite photo of the San Francisco Bay Area. ... Mount Diablo State Park is a state park in California, USA. View of Mt. ... Santa Ana winds are warm, dry winds that characteristically appear in Southern California weather during autumn and early winter. ... Southern California Downtown Los Angeles Skyline Southern California, sometimes abbreviated SoCal or colloquially, the Southland, is an informal name for the megalopolis and nearby desert that occupies the southern-most quarter of the state of California. ...
As the wind descends to lower levels on the leeward side of the mountains, the air temperature increases adiabatically as it comes under greater atmospheric pressure creating strong, gusty, warm and dry winds.
Winds of this type are called "snow-eaters" for their ability to make snow melt rapidly.
Föhn winds are notorious among mountaineers in the Alps, especially those climbing the Eiger, for whom the winds add additional difficulty in ascending an already difficult peak.
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