National Weather Service warns of dense fog across Carolinas

The National Weather Service issued dense-fog advisories Wednesday morning for parts of North Carolina and Chesterfield County, South Carolina, warning that visibility could fall to a quarter-mile or less in places and make driving hazardous. Most advisories were in effect until 9 a.m., while an earlier Raleigh-area alert was set to expire at 6 a.m.; visibility was expected to improve later in the morning. Drivers were urged to slow down, use low-beam headlights, leave extra following distance and pull over safely if visibility becomes extremely poor.