National Weather Service
It's been 46 years since Nashville has accumulated 10 inches of snow from a single storm. The last time It happened was on New Year's Eve in 1963 and continued into New Year's Day 1964. Nashville measured 10.2 inches of snowfall while areas across southern Middle Tennessee measured upwards of 16 inches. This was the largest snowfall in Nashville since 15.0 inches fell on February 21st 1929.
A cold airmass was already in place when a wave developed on a surface front in the central Gulf Of Mexico on December 30th 1963. The surface wave quickly developed into a low pressure area and moved northeast across Florida spreading a wide area of precip northward. Snow fell in Middle Tennessee in the overnight hours of New Year's Eve and into New Year's Day 1963/1964. Some areas of northwest Alabama received 20 inches of snow.
Daily Weather Map for 1 A.M. E.S.T. January 1, 1964/ Image from noaa/nws/hpc