The National Weather Service in Morristown warned of extremely dangerous driving conditions across the region on Wednesday night as a second round of snow started in Oak Ridge.
The 7 p.m. evening snow followed an earlier round of snow at about 2 p.m. Wednesday.
The Weather Service said the snow and subfreezing temperatures in the region will create slick roads and travel concerns across the region.
“Roads will become extremely treacherous overnight as snow and ice continues to accumulate and build up,” forecasters said.
The Weather Service said the poor travel conditions could persist into Thursday even after the precipitation tapers off.
A Wednesday afternoon snow forecast predicted four to six inches of snow in most of Anderson County between Wednesday and Thursday afternoons, two to six inches across Roane County, and four to eight in Knox County. All three counties have winter storm warnings.
The snow is expected to intensify during the evening and overnight before tapering off on Thursday.
The forecast near Oak Ridge said there could be a total nighttime accumulation of two to four inches, with a low of about 27. There is a 50 percent chance of snow before 10 a.m. Thursday, with a high near 39.