From GSP: (regarding Thursday AM)
CAMs have picked up on the development of a 700-850mb frontogenesis
band in association with the secondary wave of snow that should
form. In this case, localized snowfall rates could become
moderate to heavy at times, with somewhere between Greenville,
SC to Charlotte, NC and the I-77 corridor possibly picking up a
surprise inch of snowfall. Most places will likely see a tenth
of an inch or so on elevated surfaces, but the dynamics are in
place for a localized deformation band to set up over somewhere
in the Piedmont of the CFWA. If this happens to occur outside of
the current Winter Weather Advisory area, don`t be surprised if
a short-fused Winter Weather Advisory will be need for some of
the Upstate SC counties. The latest HREF suggests that this would
likely occur in the CLT Metro area.