More theory and investigation last couple of weeks...

I didn’t scientifically observe the following but, just from observing the weather reports from the coastal ocean waters here’s a hypothesis:

There are (3) geographical areas that seem to produce more fog and low visibility:

1) Point Reyes https://en.m.wikipedia.org/wiki/Point_Reyes

2) Half Moon Bay https://en.m.wikipedia.org/wiki/Half_Moon_Bay,_California

3) Monterey Bay https://en.m.wikipedia.org/wiki/Monterey_Bay