Some of the coldest weather of this winter is expected over the region tonight, as an arctic high plunges into the mid-Mississippi Valley. Overnight lows will be plummeting into the single digits but strong northwest winds will make it feel much colder, with wind chills at or below zero. (Please visit http://weather.gov/lsx for more information.)

Some of the coldest weather of this winter is expected over the region tonight, as an arctic high plunges into the mid-Mississippi Valley. Overnight lows will be plummeting into the single digits but strong northwest winds will make it feel much colder, with wind chills at or below zero. (Please visit http://weather.gov/lsx for more information.)