Areas of fog have expanded across east-central and northeast Wisconsin early this morning. The fog was locally dense in spots, with a visibility of 1/4 mile or less, especially along the southern bay impacting the city of Green Bay. If you have travel plans early this morning, be on alert for rapidly changing or poor visibilities as low as 1/4 mile or less in spots. Plan on extra time to reach your destination and allow extra room between you and the car in front of you. Visibilities should begin to improve from west to east through sunrise as a cold front moves across the area.