A whole bunch of information to get to this morning. First, take the time to watch the above video from James Spann at AlabamaWX.com. His explanation of the upcoming system will help us understand what the possibilites are for snowfall in Middle TN.
Our biggest questions right now are the temperatures for Wednesday night into Thursday. The confidence level for precipitation is high, the confidence level for cold enough temperatures for all snow is LOW. Freezing lines on the forecasting models show the rain/snow line anywhere from the KY/TN border to Southern Middle TN...so depending on which is true will determine where the snow will happen.
At this point, expect a mixed bag for Middle TN with a nice snow event for East TN. The Morristown, TN NWS has issued a Special Weather Statement for East TN for Wednesday night and Thursday.
Another system will threaten our area again on Friday and even COLDER air invades Middle Tennessee on Saturday with highs barely in the 20's and lows in the single digits.
This morning, we are in the teens in Cookeville and other locations in Middle TN. Here is a latest, local forecast. Lastly, if you want to understand the NWS's take on the system, read the Forecast Discussion. The more you read this section, the more you'll begin to understand it.