Dense Fog Advisory issued December 09 at 4:57AM PST until December 09 at 10:00AM PST by NWS

…DENSE FOG ADVISORY NOW IN EFFECT UNTIL 10 AM PST THIS MORNING… * WHAT…Visibility one quarter mile or less in dense fog. * WHERE…San Francisco, North Bay Interior Valleys, San Francisco Bay Shoreline, San Francisco Peninsula Coast and East Bay Interior Valleys.