Fog/Stratus California Coast

The GOES-W MVFR Fog Probability 4km does a fairly nice job assigning high MVFR probabilities to stratus and fog off the coast of CA but also depicts the clearer area over Channel Islands National Park. It does assign only low probabilities to the MVFR-IFR conditions along the coastline however. Could this possibly be due to a thinner depth to the stratus field, assuming it is actually thinner? Farther to the west beyond the various islands the Fog Probability shows an area of "no data" due to clear areas that are present and sct-bkn cloud cover versus the bkn-ovc cloud cover to the east.

Mark Gehring NWS/MKX
Justin Sieglaff UW/CIMSS