Afternoon LWX AFD for late next week chances
Upslope snow showers will linger across the Alleghenies through
Thursday before moisture is cutoff under west to southwest flow.
Additional moisture arrives with a secondary Arctic front that looks
to cross Thursday night into Friday. In additional to the front an
area of low pressure expect to track along the boundary from the
Tennessee River Valley and toward the Carolina/VA Tidewater region
during the same aforementioned timeframe. The combination of these
two systems could bring another round of impactful wintry weather to
the region. Uncertainty still remains as some guidance has backed
away on the development of this system while other guidance has a
more organized wave of energy pushing through. Confidence is still
low in regards to timing, intensity, and totals. Each of the
deterministic model solutions and their ensembles favor a quick
moving storms Friday into Saturday with another potent blast of cold
air in it`s wake. The GFS, ECMWF, GEFS, and EPC all have some snow
for the area while the GEM, RDPS, and CMCE do not. Of course these
models are subject to change and likely to flip-flop in the coming
days ahead. Will continue to monitor these changes and post
additional information at weather.gov/lwx/winter.
Highs Thursday will remain in the upper 30s and mid 40s with
lows Thursday night in the mid to upper 20s 20s outside the
mountains. Similar readings can be expected Friday with
temperatures crashing into the teens and 20s Friday night into
the wake of the front. 850 mb temps this weekend will plummet to
12 to 17 degrees C yielding highs below freezing on both
Saturday and Sunday (teens mountains).