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NWS: Fujiwhara effect impacts San Francisco Bay Area,

 
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windfind



Joined: 18 Mar 1997
Posts: 1899

PostPosted: Wed Mar 22, 2023 6:33 am    Post subject: NWS: Fujiwhara effect impacts San Francisco Bay Area, Reply with quote

"San Francisco NWS Discussion.

As of 03:00am PDT Wednesday… wow. Even by the standards of what has turned out to be one of our most extraordinary winter seasons in a very long time, yesterday (Tuesday) stands out. On Tuesday afternoon, as the storm approached the Bay Area, the system developed two “eyes,” or areas of low pressure, which intensified winds as they danced around each other, said Brian Garcia, a National Weather Service meteorologist in the Bay Area.
The phenomenon, known as the Fujiwhara effect, was contributing to peak wind gusts “upward of 60 to 75 mph in the Santa Cruz MountainsExplosive cyclogenesis over the eastern Pacific resulted in a 984 mb low pressure center just west of the San Mateo County coast, and associated widespread strong and damaging winds and flooding rains. San Francisco Airport itself reported a minimum sea-level pressure of 985 mb, which appears to set a new record for the month of March, and reported a peak wind gust of 64 mph (with an even more remarkable 74 mph peak wind at Oakland Airport).



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windward1



Joined: 18 Jun 2000
Posts: 1400

PostPosted: Wed Mar 22, 2023 2:02 pm    Post subject: Reply with quote

The gusts on Loma Prieta in the Santa Cruz Mountains reached 90 mph, per the meter up there that shows up on the iWindsurf map.
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