A quick check of GSP climate data reveals no significant snow after an 80+ degree max daily temp.
A review of the 3 major March storms that I recall, 1980, 1983 and 1993… 1980 first 80+ 4/23/89: 1983 first 80+ 4/27/83: 1993 first 80+ 5/6/93.
Historically, hitting the 80 degree mark is the death knell for SE snowstorms.
Interestingly, Jan 99 had an 80 degree day. We did have a minor event later in the season.