Dense Fog Advisory issued December 22 at 2:45AM MST until December 22 at 11:00AM MST by NWS

…DENSE FOG ADVISORY NOW IN EFFECT UNTIL NOON CST TODAY… * WHAT…Visibility one quarter mile or less in dense fog. * WHERE…Portions of northwest and west central Iowa, southwest Minnesota, northeast Nebraska and east central and southeast South Dakota. * WHEN…Until noon CST today.