UPDATE: The Storm 5 Alert expired early around 1:45 a.m.
Some strong storms are possible overnight tonight mainly northwest of Nashville with damaging straight-line wind and localized flooding the main threat.
The timing of the alert is from 9 p.m. Tuesday to 7 a.m. Wednesday.
A brief isolated tornado is also possible. As we head toward daybreak Wednesday, the threat will transition from wind/tornado to heavy rain and localized flooding.