Dense fog has reduced visibilities to 1/4 mile or less across portions of the area. The dense fog will continue this morning across southeast Minnesota and northeast Iowa into far southwest Wisconsin. A Dense Fog Advisory remains in effect for these areas through noon today.
In addition to the poor visibility, where temperatures are below freezing, the fog could deposit a thin layer of ice on any untreated surfaces. Motorists traveling around the region are urged to slow down, allow extra time to reach your destination, use your low beam headlights in the fog and be prepared for the possibility of some icy spots.