Patchy fog will persist through daybreak. It may be locally dense near water bodies and in low lying areas. Rapid changes in visibility may also occur given the shallow patchy nature of the fog. Use caution if traveling early this morning.
1152 PM CDT Sat Oct 25 2014
...Locally dense fog expected overnight and early Sunday morning....
As temperatures cool tonight under clear skies and calm winds fog will develop causing reduced visibilities in some areas. The best chance for dense fog is south of a line from Carbondale IL to Madisonville KY. More humid air remains in these areas in contrast to southwest Indiana and adjacent areas of Illinois and Kentucky where drier air is in place.
If you plan to drive overnight or early Sunday morning check the latest weather conditions and allow plenty of drive time.