* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Koochiching, Itasca, Central and North St. Louis, and Northern Cook and Lake Counties. This includes the Tribal Lands of the Bois Forte Band, Nett Lake, Deer Creek and, Lake Vermilion areas. Other locations including Voyageurs National Park. The entire Boundary Waters is also included.
* WHEN...Until 8 AM CDT this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.