Dense Fog Advisory

* WHAT...Visibility 1/4 mile or less in dense fog.

* WHERE...Luce, Northern Schoolcraft, Southern Schoolcraft, Keweenaw, Northern Houghton, and Southern Houghton Counties.

* WHEN...Until 10 AM EDT Friday.

* IMPACTS...Low visibility could make driving conditions hazardous.

* ADDITIONAL DETAILS...Areas along the Lake Superior shoreline can expect less in the way of fog tonight due to light, southerly downslope flow. The exception is northern Houghton and Keweenaw counties, where upslope flow may intensify the fog from the lakeshore up the terrain. Be prepared for rapidly changing conditions if you are headed inland.