Science / Weather / Foehn: A warm dry wind on the lee side of a mountain range, whose temperature is increased as the wind descends down the slope. It is created when air flows downhill from a high elevation, raising the temperature by adiabatic compression. Classified as a katabatic wind.


Science / Weather / Chinook: A type of foehn wind. Refers to the warm downslope wind in the Rocky Mountains that may occur after an intense cold spell when the temperature could rise by 20°F to 40°F in a matter of minutes. MORE

Snow Eater

Science / Weather / Snow Eater: Any warm downslope wind, or foehn, that blows over snowy terrain and melts the snow. MORE

Katabatic Wind

Science / Weather / Katabatic Wind: A wind that is created by air flowing downhill. When this air is warm, it may be called a foehn wind, and regionally it may be known as a Chinook or Santa Ana. When this air is cold or cool, it is cal MORE

Santa Ana Winds

Science / Weather / Santa Ana Winds: The hot, dry winds, generally from the east, that funnel through the Santa Ana river valley south of the San Gabriel and San Bernadino Mountains in southern California, including the Los Angeles basin MORE