…DENSE FOG ADVISORY IN EFFECT FROM 2 AM TO NOON PDT WEDNESDAY… * WHAT…Visibility one quarter mile or less in dense fog. * WHERE…Portions of the San Joaquin Valley, from Merced County to Kern County, includes cities along the Highway 99 corridor. * WHEN…From 2 AM tonight to noon PDT Wednesday. * IMPACTS…Hazardous driving conditions due to low visibility.