Hartwell, Georgia Weather Forecast Discussion

795
FXUS62 KGSP 091723
AFDGSP
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
123 PM EDT Tue Sep 9 2025
.SYNOPSIS...
Dry high pressure will persist over the region through this
weekend. We will have a gradual warming trend into early next
week as an upper trough moves off the East Coast and an upper
ridge moves in from the west. Dry weather will continue into the
weekend.
&&
.NEAR TERM /THROUGH WEDNESDAY/...
As of 1210 PM Tuesday: Broad upper troughing will continue to
envelop the eastern CONUS east of the Mississippi River through
tomorrow. At the surface, a massive sprawling high remains draped
from eastern Canada down the east coast and Appalachians with dry
northeast flow will prevailing and PWATs well below an inch. This
will keep dry and benign weather in place with temperatures below
seasonal averages. Overnight lows tonight are expected to fall into
the upper 40s to mid 50s with a warming trend beginning tomorrow as
afternoon highs rebound into the upper 70s to low 80s. Otherwise, a
few instances of mountain valley fog will be possible, especially
across the Little Tennessee Valley.
&&
.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
As of 1256 PM EDT Tuesday: An upper low will drift across Atlantic
Canada through the period, while a surface high sets up shop over
Quebec and New England. Expect dry north-northeasterly flow to
filter in with baggy upper troughiness overhead, helping to keep
cooler thicknesses in place. As a result, sensible weather remains
dry through the end of the workweek, with no mentionable PoPs in
the forecast. Temperatures will be 5-10 degrees below normal for
overnight lows thanks to radiational cooling, while afternoon highs
will be only a degree or two below-normal as strong insolation
reaches the surface under mostly sunny skies.
&&
.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
As of 120 PM EDT Tuesday: Surface high still in control going
into the upcoming weekend, while the flow aloft remains virtually
unchanged. Guidance show a weak backdoor front sliding through
the area Saturday night into Sunday, but will at most provide
some cloud cover and a wind shift. Otherwise, the upper pattern
diverges slightly closer to the end of the period as there is
some support for a closed upper low developing somewhere in the
eastern CONUS, but differ in the exact placement. This could be
the setup to bring our next rain chances, but confidence is low
at this time. Temperatures will uptick to near-normal through the
weekend, with some potential of climbing a few ticks above normal
by the end of the forecast period.
&&
.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
At KCLT and elsewhere: VFR conditions will prevail at most terminals
through the TAF period. The only exception will be KAVL where valley
fog will be possible early Wednesday morning before quickly
dissipating after sunrise. Otherwise, no restrictions are expected
with mainly high clouds and a scattering of VFR cumulus. Winds will
be light out of the north/northeast, although a few gusts will
remain possible through this afternoon.
Outlook: Dry and mostly VFR through the end of the week, except
for the steadily increasing potential for morning mountain valley
fog and/or low stratus.
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.
&&
$$
SYNOPSIS...DEO
NEAR TERM...TW
SHORT TERM...CAC
LONG TERM...CAC
AVIATION...TW

NWS GSP Office Area Forecast Discussion