Coldest wind chills through Friday morning 7 below zero in Rolla, according to the National Weather Service.
The National Weather Service special weather statement for Phelps County states there will be minor road impacts for the morning commute.
Many regional roads are still wet from Wednesday's precipitation, the NWS states.
“With steadily falling temperatures behind an arctic front, black ice may become a hazard during the morning commute. Bridge decks, underpasses, shaded areas, and the north sides of buildings may be most susceptible to flash freezing early this morning,” the NWS said in the statement issued at 5:49 a.m.
If operating a motor vehicle, the NWS said be sure to leave plenty of space between the vehicle ahead and take it slow on the bridges and exit or entrance ramps.