Motorists in Door and Kewaunee counties are being warned to drive cautiously this morning as the area is currently under a dense fog advisory until 10 a.m. The National Weather Service issued the warning last night as parts of the area were also seeing snow and freezing rain. The Kewaunee County Sheriff's Department gave motorists a heads up last night on Facebook on the icy road conditions and that the Kewaunee County Highway Department would be hitting the roads to treat them. Motorists are encouraged to use their headlights on low beams, drive slowly, and give other drivers plenty of space. A chance of snow is expected tonight before the weather clears up for the weekend.