Here is my Final Forecast before the event starts tonight. I've made no big changes.
RAIN STARTS: This evening
RAIN ENDS Midnight to 2 AM Tuesday
SNOW STARTS 2 AM to 4 AM Tuesday
SNOW ENDS Around 8 AM Tuesday
It starts out as RAIN, but will changeover in the wee hours of Tuesday morning. No surprise here. The rain will ultimately change over to plain snow, but some mixing of freezing rain and sleet may be observed in the middle, during that process, especially in the Plateau, around Crossville and Jamestown.
Snow accumulation will be more noticeable on grassy surfaces, car roofs and on patio furniture, leaving less snow on the pavement, in most cases.
Something I'm still watching...
Mesoscale bands of snow, where areas are made different due to its elevation, temperature and topographic prominence, could easily form in the pre-dawn hours of Tuesday morning in East Tennessee. Just like fog can be locally dense in one part of a town and not so bad in another part of the SAME town.
In other words, it would not surprise Captain Accurate if some of you receive more than 4 + inches of snow in a few Valley locations. So stay alert, and don't act surprised. However, that will NOT be the norm for most. Most in the Valley will see 1 to 2" of snow fall with even less actually sticking on the pavement. It will create, however, I'm sure, "snow envy" for those who LOVE snow, but feel they got cheated somehow in the process by Mother Nature. Psst ! You didn't. The practical solution on Tuesday morning? Hop in the car and take a short drive to the Smokies. :-)
Enjoy...and above all, stay safe.
So weather does not surprise you
Captain Accurate Weather