NOAA Special Weather Statement for 3-25-17 Rain could cause localized flooding.

Heavy showers and isolated thunderstorms may produce localized
flooding over parts of eastern Middle Tennessee tonight.

Early tonight, a slow moving band of showers and isolated
thunderstorms was located between Interstate 65 and the
Cumberland Plateau. Doppler radar indicated that some spots
received about a third of an inch of rain during the
evening hours...and some areas could receive an additional one
half to three quarters of an inch overnight. Localized rain
totals over an inch are possible tonight...especially over the
southeast...around Shelbyville, Manchester, Altamont and
McMinnville. Some isolated spots further north, toward Cookeville
and Gainesboro could see similar rain amounts.

These rains may cause water to pond in low lying areas, especially
in urban locations. If you are out driving tonight, you should
avoid areas where water covers the road. If you come upon a
flooded area, turn around and take an alternate route to your
destination.