"Visibilities are increasing across the region, and the Dense Fog Advisory will be allowed to expire. Patchy dense fog is still possible into the early afternoon. If you encounter a patch of dense fog while driving, slow down, use your low beam headlights, and leave plenty of distance ahead of you," says the NWS San Francisco CA.

Some parts of South Florida had a foggy start to Wednesday. A dense fog advisory went into effect late Tuesday and will be in place until 8 a.m. for inland Broward and Miami-Dade counties, the National Weather Service said.

The NWS Greenville-Spartanburg SC issued a dense fog advisory at 3:24 a.m. on Sunday. The advisory is for Northern Jackson and Southern Jackson as well as Avery, Madison, Yancey, Mitchell, Swain, Haywood,

A dense fog advisory was issued by the National Weather Service on Sunday at 4:59 a.m. in effect until 9 a.m. The advisory is for Person, Granville, Vance, Warren, Halifax, Forsyth, Guilford, Alamance,

On Friday at 7:38 a.m. a dense fog advisory was issued by the National Weather Service in effect until noon for West Central Willamette Valley, East Central Willamette Valley, Benton County Lowlands and Linn County Lowlands.

On Monday at 10:58 a.m. the NWS Hanford CA issued a dense fog advisory in effect until 11 a.m. The advisory is for Merced - Madera - Mendota, Fresno area and Hanford - Corcoran - Lemoore.

On Sunday at 3:24 a.m. a dense fog advisory was issued by the National Weather Service in effect until 11 a.m. The advisory is for Greater Oconee, Greater Pickens, Central Greenville, Southern Greenville,

An updated dense fog advisory was issued by the National Weather Service on Thursday at 11:49 a.m. in effect until noon for Central Douglas County.