Dense Fog Advisory issued December 21 at 10:08PM MST until December 22 at 10:00AM MST by NWS

…DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM CST FRIDAY… * WHAT…Visibility one quarter mile or less in dense fog. * WHERE…Beadle, Sanborn, Davison, Hanson, Hutchinson, Yankton and Clay Counties. * WHEN…Until 11 AM CST Friday. * IMPACTS…Hazardous driving conditions due to low visibility.