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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".
Dozens of instances of large hail, damaging wind gusts, and multiple tornadoes were confirmed with this event, including an EF2 tornado that killed a person in Cheyenne, Oklahoma. A 114 mph (183 km/h) wind gust from straight-line winds was reported in Memphis, Texas, which was the highest wind gust since the August 2020 Midwest derecho.
Winds from the storm gusting up to 61 mph (98 km/h) [30] resulted in power outages for over 170,000 customers, around the Seattle metropolitan area and around Puget Sound. [ 6 ] [ 4 ] The highest winds recorded in Washington state were 85 mph (137 km/h) gusts on the Long Beach Peninsula .
Wind gusts of up to 65 mph are expected in the mountains, while 30-50 mph gusts are likely everywhere else. Humidity stays low as well, further fueling the likelihood of rapid fire spread.
The National Weather Service has issued an extreme weather warning for parts of southern California due to the Santa Anas winds fueling the flames.. It said that the time period of the greatest ...
"Wind gusts are expected to peak at 30-50 mph across portions of Southern California" according to Fieweger. This would be the case for communities like Santa Clarita and Riverside.
On Sunday morning, a wind gust of 73 mph was reported by the National Weather Service near Crestline, California, representing the strongest wind gust from the Santa Ana event thus far.
Fastest ever recorded: 484±32 km/h (301±20 mph) (3-second gust); calculated by a DOW (Doppler On Wheels) radar unit in the 1999 Bridge Creek–Moore tornado between Oklahoma City and Moore, Oklahoma, USA, 3 May 1999. Recently, the wind speeds were re-examined and adjusted to a maximum official wind speed of 321 mph (516.6 km/h).