* WHAT...Visibility as low as one quarter mile in dense fog. * WHERE...Green Lake, Fond du Lac, Columbia, Dodge, Dane, Jefferson and Rock Counties. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility.... SEE MORE

Areas of dense fog, with visibilities of 1/4 mile or less, will affect the Fox Valley and lakeshore areas, including Interstate 41, through about 9 am. Locally very poor visibility of around 100 yards may occur in some areas. Motorists traveling across the region this morning can expect rapidly cha... SEE MORE