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

DENSE FOG ADVISORY IN EFFECT UNTIL NOON CST SATURDAY... * WHAT...Visibility one quarter mile or less in dense fog. This afternoon and evening may see less widespread dense fog. * WHERE...Portions of central, east central, south central, and southeast South Dakota. * WHEN...Until noon CST Saturday. * IMPACTS...Low visibility and patchy icing will make driving conditions hazardous. * ADDITIONAL DETAILS...With temperatures at or below freezing untreated surfaces will be slick at times.