Temperatures across northeastern TN into southwest VA are stubborn to rise versus the modeled rate, and that may continue to be the case overnight for areas with frozen precipitate on the ground. Lowered temperatures and slowed the overall rise overnight across locations that are still sub-freezing with observations from area airports and spotters with the latest HRRR and NAM guidance. Product wise a SPS for the relevant TN counties and an extension in time for the winter weather advisory in southwest Virginia have been issued. A band of light rain is crossing much of the cold portions of the area now, but will swiftly move through. Additional light icing is likely from this rain swath. Meanwhile the main band of rain still lies to our west, and a few rumbles of thunder or direct lightning bolts cannot be ruled out as the storms have been rather persistent while crossing Middle Tennessee. This line of primarily showers should rumble through during the overnight hours in agreeance with the forecast and guidance.-NWSM .