AREA FORECAST DISCUSSION...UPDATED
National Weather Service Morristown TN
1249 AM EST Mon Dec 14 2020
.UPDATE...
FOR 06Z AVIATION.
&&
.DISCUSSION...
Not a whole lot of change to the forecast this evening. Biggest
change was to slightly delay onset of precip across the central
east TN Valley and northeast TN by a few hours. Looking at the
latest data, still a very difficult forecast in terms of snow
potential across the northern Cumberland Plateau and southwest VA.
I think the biggest bust potential is across Wise County and
Russel County VA, our most northern counties in our CWA. By bust
I mean our current snow totals could be too low. However, I just
don`t feel confident enough to raise the current totals that are
in place. To be honest, we probably won`t have a good grasp on
snow totals until we actually see when the changeover occurs. With
this event changeover-time is everything. A changeover from rain
to snow that occurs just an hour or two earlier could raise snow
totals by a few inches and vice versa if changeover is later than
expected. The current SPS and snow totals mentioned within still
look reasonable so will let it ride for now. Will be closely
watching how this event unfolds through the night.
SR