As I write at 10:45 AM on July 12, a tiny eddy is dying between the Golden Gate and Stinson Beach. This satellite animation shows the current winds as the eddy dies. This afternoon, with the eddy gone, mild NW winds reach into the Bay.
With a max pressure gradient towards Sacramento, we should see strong WSW to SW winds north of the Bay Bridge. But that NW flow helps the 3rd. Ave.
The channel should be windy, but a combo of a Stockton gradient and maybe some WSW flow from the Hwy. 92 gap area may make the 3rd. Ave. launch sites are iffy at times.
But tomorrow, I expect an elongated counter-clockwise eddy that will impact much of the California coast.