Special Weather Statement issued December 18 at 9:54AM EST by NWS Greenville-Spartanburg SC

Fog is gradually lifting and breaking up across the Foothills and
Piedmont of the Carolinas and Northeast Georgia this morning.
However, patchy dense fog lingers across much of the North
Carolina Piedmont. Also, some dense fog has expanded north out of
the Midlands from Elberton, GA, to just south of Monroe, NC.
Visibilities should improve above one-half mile across the entire
area by around noon EST.

If driving, slow down, use your low beam headlights, and leave
plenty of distance ahead of you.