Slow down and use caution while traveling. For road condition information in California...enter 8 0 0 4 2 7 7 6 2 3 if inside california or 9 1 6 4 5 5 7 6 2 3 if outside California.

Patchy freezing fog is occurring across portions of eastern McHenry, western Lake, and far northern Cook Counties in northeast Illinois this morning. Visibility may be reduced to a quarter mile or less in spots. With temperatures below freezing some patchy slick spots may develop, especially where visibility is lowest. Visibility is expected to improve by around 10 am.