Moderate Expected Likely Dense Fog Advisory Dense Fog Advisory issued November 2 at 2:26AM PST until November 2 at 9:00AM PST by NWS San Diego CA Nov 2, 2:26 AM → Nov 2, 9:00 AM WHAT: Visibility one quarter mile or less in dense fog. WHERE: San Diego County Coastal Areas and Valleys, generallybetween 300 and 800 ft elevation. WHEN: Until 9 AM PST this morning. IMPACTS: Low visibility could make driving conditions hazardous,especially along I-15, I-8, and Highway 163. + Read More If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Updated: Nov 2, 6:56 AM Source: NWS Alert