You've never obviously seen it blowing in the Golden Gate on
its way to Bezerkeley. The interior valley heats up and rises, and
the air flows from the cooler ocean toward the valley. It is typical
to see fog moving at 30+ kts through the slot between Angel Island
and Alcatraz.

"Eisboch" wrote in message
...

"Tim Roberts" wrote in message
...

What do you think causes the land fog to move out to sea?
The Wind.

Drainage winds and katabatic winds can both move off land out to sea and
carry fog with them.




I don't think fog is moved around much by the wind. Fog develops when
atmospheric conditions are such that the air becomes saturated with water
vapor. A distant fog bank on the ocean doesn't "blow" in to surround your
boat. The fog that surrounds you generates at your location as the
atmospheric variables permit.

Eisboch