If driving, slow down, use low-beam headlights and fog lamps, andleave plenty of distance ahead of you.
* WHAT...Visibility one quarter mile or less in dense fog.* WHERE...Portions of Piedmont and western North Carolina andUpstate South Carolina.* WHEN...Until 10 AM EDT this morning.* IMPACTS...Low visibility could make driving conditions hazardous.Visibility may change suddenly and over small distances.