From the National Weather Service:
This Hazardous Weather Outlook is for portions of Middle Tennessee.
Today and Tonight
A Flood Watch is in effect for Cannon County and all but far northwest Middle Tennessee this afternoon through Friday afternoon.
Rain will spread over the area this morning, with the rain becoming heavy at times this afternoon and evening. Rain will continue tonight before gradually diminishing on Friday. Rainfall totals ranging from around 1 inch over far northwest Middle Tennessee up to 3 to 4 inches in southeastern Middle Tennessee. These rainfall amounts could lead to flooding of roads and low lying areas, as well as rises on area rivers, creeks and streams.
Friday through Wednesday
A Flood Watch is in effect for Cannon and all of Middle Tennessee from this afternoon through Friday afternoon.
Rain is expected to continue but diminish in coverage and intensity on Friday. However, flooding will remain possible across the area due to the heavy rain expected Thursday afternoon into Thursday night.
A mix of light rain and light snow is possible across the area on Saturday, mainly in the afternoon and evening. A dusting of snow is possible in parts of the Upper Cumberland and northern Cumberland Plateau, but this remains highly uncertain. No accumulation is expected elsewhere.