"Temperatures remain below freezing across much of the area. Slick roads and areas of black ice will continue through the morning. Please use caution if you have to be out on the road or delay travel until temperatures warm. Slow down, use caution, and travel only if necessary this morning," states the NWS Morristown TN.

Overnight, the National Weather Service upgraded the entire Tri-State area to a winter storm warning for Friday.

The National Weather Service has issued a winter storm warning for many areas of Georgia. Here's a look at the forecast and what agencies are doing.