The National Weather Service has issued a dense fog advisory for Beaufort County and surrounding areas until 10 a.m. Tuesday.
Visibility is reduced to a quarter mile or less, according to the advisory. In some areas, particularly next to marshes, rivers and swamps, visibility is near zero. Counties included in the advisory are: Beaufort, Jasper, Colleton, Hampton, Berkeley, Allendale, Dorchester, Berkeley, Charleston and several Georgia counties.
Drivers are cautioned to slow down, use low beam headlights and leave plenty of distance ahead of them in case a sudden stop is needed.