A large cold air mass will push southward bring much colder than normal temperatures and chances for accumulating snow to the region. The heaviest snow amounts look to develop over northwest, South Dakota where the region may see four to six inches by the start of the workweek. The National Weather Service Office in Rapid City has places the far western and northwest counties of South Dakota under a Winter Weather Advisory. For the latest weather alerts, please visit our Weather Alerts Map.
Snow amounts drop off as you move eastward, with some location along Interstate 29 only receiving under an inch if any. There is another winter weather concern for eastern, South Dakota as areas of freezing drizzle may develop later tonight and into Sunday, possibly accumulation minor amounts of ice on surfaces.