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Such winds are sometimes also called fall winds; the spelling catabatic winds [1] is also used. Katabatic winds can rush down elevated slopes at hurricane speeds, but most are not that intense and many are 10 knots (19 km/h; 12 mph) or less. Not all downslope winds are katabatic. For instance, winds such as the föhn and chinook are rain shadow ...
The Santa Anas are katabatic winds (Greek for "flowing downhill") arising in higher altitudes and blowing down towards sea level. [7] The National Weather Service defines Santa Ana winds as "a weather condition [in southern California] in which strong, hot, dust-bearing winds descend to the Pacific Coast around Los Angeles from inland desert regions".
This evidence demonstrates that katabatic winds work as a pump that’s able to transport cold air from the higher elevation and the atmospheric layers down to the valley, Pellicciotti explained.
However, the strong winds of the jet are a localised feature. Early modelling studies concluded that the jet forms as a result of orographic channelling (i.e. Bernoulli's principle). [3] [4] More recently, it has been proposed that the night-time strengthening of the jet is a consequence of orographic downslope winds (i.e. Katabatic wind). [5]
Red flag warnings are in place for Southern California due to Santa Ana winds that will bring gusts up to 65 mph and “extremely rare and dangerous” fire weather conditions. Red flag warnings ...
Winds will decrease by Wednesday afternoon. However, the humidity will stay extremely low. Original article source: 'Highest possible' fire danger threatens Southern California as Santa Ana winds ...
Berg wind, a seasonal katabatic wind blowing down the Great Escarpment from the high central plateau to the coast in South Africa. Cape Doctor , often persistent and dry south-easterly wind that blows on the South African coast from spring to late summer (September to March in the southern hemisphere).
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