update

Like many overrunning events in this part of the nation, we are on the fence. I think you should start to see a trend towards West TN, West Mid TN, and West KY of increasing precipitation with that Arkansas low. It may take another hour or two to saturate the atmosphere, so it may not begin till 4 to 5 for some people. At about 9 to 10pm for Southern portions of TN, and Midnight, 1am-3am for portions of Central Kentucky, and NE Mid TN, but it is hard to pindown the changeover. This will determine whether you have areas of .15 to .30 of ice, or just a few hundredths of ice before changing to rain.