A moist southerly flow of air combined with nighttime cooling has resulted in areas of fog across most of central and eastern Upper Michigan. This fog has become locally dense... restricting visibility to one quarter mile or less in some places. The thickest fog is most prevalent in low lying areas... especially near inland bodies of water or wetlands. Expect this patchy dense fog to linger through sunrise before burning off by mid morning.
If you are traveling this morning... be prepared for patches of dense fog with near zero visibility. Slow down and leave plenty of distance between you and the vehicle ahead of you. Use your low beam headlights.