* WHAT…Visibility one quarter mile or less in dense fog.
* WHERE…The Marin Hills, Western Sonoma County Hills, The Santa
Clara Valley, San Francisco, Coastal North Bay Including Point
Reyes National Seashore, North Bay Interior Valleys, San Francisco
Bay Shoreline, and East Bay Interior Valleys.
* WHEN…Until 11 AM PST this morning.
* IMPACTS…Low visibility could make driving conditions hazardous.