I am feeling pretty confident that we are going to do drop down in to the 50's Nashville. The 12Z Nam is giving us a low around 58F @ 6AM thursday morning. This is quite a nice relief from our current oven. At 6AM Friday the NAM is coming in a @ 52F which is pretty impressive. The GFS For Thursday 6AM is coming in at 61F and Friday 6AM @ 56F. Here you can see the air filtering down into the plains.

And with flow @ 500mb and 850mb from the NW its possible that this could certainly be the case. I think the NAM may be a bit overdone, but we will see once we get into the 12Z suites of Tomorrow. With Partly clouds skies Wednesday night and mostly clear Thursday night radiational cool will be the facor imo but other influences could could certainly come into play.