The latest on the weather is that we are expecting a line of severe thunderstorms to impact Middle Tennessee between 11pm and 3am. Storms will produce high winds and possibly an isolated tornado. Secondary to that threat is the possibility of discrete supercell development. These types of storms can produce tornadoes, however that threat seems isolated to the Alabama border area. It is still possible however that one of these storms could develop/track farther north so be on guard prior to 11pm.
I recommend that everyone review their family emergency plans and check that you have a functioning flashlight and NOAA weather radio and stay aware of this developing situation.