…DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING… * WHAT…Visibility less than one quarter mile in dense fog. * WHERE…Beadle, Jerauld, Sanborn, Brule, Aurora, Davison, Hanson, Charles Mix, Douglas and Hutchinson Counties. * WHEN…Until 9 AM CST this morning. * IMPACTS…Hazardous driving conditions due to low visibility.