Heat Advisory

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Heat Advisory, heat index values up to 95 degrees expected.

* WHERE...Central St. Louis County. This includes the Tribal Lands of the Bois Forte Band, Lake Vermilion area.

* WHEN...For the Dense Fog Advisory, until 9 AM CDT this morning. For the Heat Advisory, from 11 AM this morning to 9 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Low visibility could make driving conditions hazardous.