Nashville disco
LONG TERM...
(Thursday through next Tuesday)
Issued at 1053 AM CST Tue Jan 7 2025
The story for this forecast continues to be the snow potential for
Friday. Brief ridging on Thursday ahead of the next trough will
warm temps slightly, but still going to remain with cooler temps
and highs staying in the 30s. Snow is expected to begin in the
west Friday morning with the trough over the Plains working its
way east. Peak snowfall looks to be mid morning through the
afternoon across most of the mid state, and into the evening to
early overnight hours for the Plateau. This will be a quick hit of
snow, but right now, models are pretty consistent showing 1 to 4
inches of snow depending on which model you are looking at. The
GFS and its ensembles are the most aggressive with snow, and on
the higher end of amounts thanks to a stronger trough, and near
perfect isentropic lift during the day Friday. Decent Q-vector
convergence and upper level support stays around through the day,
so the GFS is fully onboard with heavy snow. The ECMWF, its
ensembles, and the NAM are still showing snow, but not as
aggressive as the GFS/GEFS. Still, broad ensemble consensus is 1
to 4 inches with the latest forecasts for Friday, and the most
likely scenario is 2-4 inches area wide. If models start leaning
towards the GFS solutions, that will go up, but going the other
direction, amounts will go down slightly. Probability of 2 inches
or more is roughly 50 to 70 percent area wide.
Temps will struggle to get above freezing Saturday, but ridging
tries to build in Sunday so that will help with melting snow. For
the most part, the remainder of the forecast looks dry, with some
light snow possible in the north Monday but agreement and
confidence is low. Temps dont look to warm up much next week with
highs in the 30s/low 40s and lows in the teens/20s.