Anderson, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

743
FXUS62 KGSP 101827
AFDGSP

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
227 PM EDT Tue Jun 10 2025

.SYNOPSIS...
Mostly dry high pressure controls our weather through Wednesday
night.  Seasonably hot and humid weather returns late in the week
with numerous showers and storms each afternoon and evening.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
As of 220 PM Tuesday: A weak boundary was located on the east slopes
of the mtns early this afternoon was providing a little bit of focus
for storm development. We`ve managed to develop 1000-2000 J/kg of
sfc-based CAPE along and S/E of that boundary. The main concern
once again will be severe thunderstorms, with the SPC having
expanded the Day 1 Marginal Risk across most of the area along
and S/E of I-85. There`s a non-zero risk of damaging wind gusts
and small hail, with a few of the CAMs developing a multicell or
two into a linear feature, which seems reasonable given effective
shear of 20-25 kt. Just enough to work with for some organized
strong storms. Lapse rates are a bit more favorable but there`s
not as much dry air aloft, so maybe today would be more of a
hail risk. The western Piedmont has maybe 800 J/kg of dCAPE or
thereabouts, so if a stronger storm develops there, wind damage
would be a higher risk. Temps look ok.

The boundary should gradually push off to the southeast this evening
as the mid level trof axis moves overhead from the west. That,
combined with the loss of daytime heating, should bring an end to
the storm threat as it moves out of the fcst area. Some drier air
will attempt to move in behind the boundary overnight with a high
pressure air mass settling over the OH Valley/central Appalachians
by daybreak Wednesday. Can`t rule out the mountain valley fog. For
Wednesday, not much temperature change, but the humidity should
be a bit lower, which will be nice. Closer proximity to lingering
moisture to our east may permit a few showers on our eastern border
in the afternoon, and an isolated shower over the Balsams would
not be a surprise, but most places will stay sunny and rain-free.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
As of 115 PM Tue: Mid level ridging will be in place across the
region for the short term period. This will lead to a typical early
summer pattern across the region with scattered showers and
thunderstorms expected mainly during the afternoon and evening
hours. Highs and lows during this period will be slightly above
normal.

&&

.LONG TERM /FRIDAY NIGHT THROUGH MONDAY/...
As of 130 PM Tue: The mid level ridging will be gradually suppressed
to the south over the weekend into early next week. This will allow
a more active storm pattern with a few weak disturbances pushing
through the area. Thus, pops will be higher and dewpoints will climb
toward 70 outside the mountains during this period. Temperatures
will remain slightly above normal for highs, but trend toward about
5 degrees above normal for overnight lows.

&&

.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
At KCLT and elsewhere: Most places should be VFR for the remainder
of the afternoon outside of showers and thunderstorms, which were
developing across the mtns and foothills at issuance time. Will
include a TEMPO everywhere but HKY and CLT because of the radar
trend. Will keep it out of KHKY because buoyancy is lacking, and
will put PROB30 at KCLT because of poor continuity in HRRR. Wind
will be light SW, but variable and gusty near storm outflows. The
clouds should tend to dissipate with the loss of heating around
sunset, by which time a weak cold front should push east of the
fcst area, but will not be very recognizable because of the light
winds. Overnight, the wind should go light/variable and only high
clouds will remain. Drier air will move in behind the front for
Wednesday, so only some scattered cu can be expected. Wind planned
to be light NE with high pressure to our north.

Outlook: VFR should continue through Wednesday night. Mainly
diurnal thunderstorms return Thursday and will persist each
afternoon/evening into the weekend. There will be potential for late
night and early morning fog and low stratus restrictions each day.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

$$

SYNOPSIS...DEO
NEAR TERM...PM
SHORT TERM...SCW
LONG TERM...SCW
AVIATION...PM