Putnam, Overton and Pickett counties are under a tornado watch until 2 a.m. But Cumberland, Fentress and White County are Not Included. A line of storms currently west of Nashville will move across Middle Tennessee and the northern Plateau after midnight but the severe weather threat is mostly west of the plateau where conditions are more unstable. The remainder of the plateau and East Tennessee can expect some scattered thunderstorms with heavy rainfall. Sunday and Monday will be cooler with highs in the upper 50s near 60.