Dense Fog Advisory issued February 27 at 4:26AM MST until February 27 at 9:00AM MST by NWS

…DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CST THIS MORNING… * WHAT…Visibility one half mile or less in dense fog. * WHERE…Portions of central, east central, south central and southeast South Dakota. * WHEN…Until 10 AM CST this morning.