Wade Hampton, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

558
FXUS62 KGSP 211842
AFDGSP

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
242 PM EDT Wed May 21 2025

.SYNOPSIS...
Cool and dry high pressure will be in control of our weather for the
second half of the week.  A warm front moves north from the Gulf on
Sunday bringing a return of showers and thunderstorms in the first
half of next week.  This front then moves south of our area in
mid week with drier weather returning.

&&

.NEAR TERM /THROUGH THURSDAY/...
As of 232 PM EDT Wednesday...Fair weather stratocu populates the sky
across the region this afternoon, which is what one would expect
with the effective front already well to our east and the actual
front moving across the fcst area this afternoon. The actual cold
front should make it east of the fcst area by sunset. Temp/dewpt
trends need a few tweaks, but were otherwise ok. No big changes.

The next 24 hours look relatively benign, but gusty winds will
continue during the daytime owing to deep mixing bringing down
some higher momentum air moving through the brisk and deep
WNW flow associated with the cyclonic flow aloft. With sunset,
we should lose the remaining low clouds and the gusts as the
boundary layer decouples somewhat. Meanwhile, weak high pressure
will be building into the region from the west with continued dry
and cold advection. Low temps tonight should fall down to about
five degrees below normal. For Thursday, the gusty winds return as
soon as we mix out the morning inversion, probably a bit stronger
overall, but not nearly strong enough to suggest we would need
an Advisory. The downslope flow will also permit drying, and the
afternoon RH should have no problem getting down into the mid-30s,
but probably not low enough for fire weather concerns. High temps
will be a few degrees under normal.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
As of 156 PM Wednesday: A large closed upper low with several
embedded vorticity maximums will be spinning over the Great Lakes
region tomorrow night with a jet streak rounding the base of the
trough across the Southern Appalachians. Associated forcing for
ascent may be enough to squeeze out a couple isolated showers across
the mountains within broad west/northwest flow. A reinforcing shot
of cool and dry air arrives Friday along with surface high pressure
bringing an end to any lingering mountain showers. Friday into
Saturday will be characterized by below average temperatures with
highs below or near 80 and chilly overnight lows dipping into the
low 40s to low 50s. Perturbed northwest flow on the western flank of
the departing upper wave may instigate upstream showers and maybe
some storms, but this activity will likely remain anchored along a
stalled frontal boundary well to our south. Nonetheless, can`t
completely rule out a couple showers brushing across the southwest
mountains Saturday afternoon.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
As of 221 PM Wednesday: By Sunday, heights will begin to rise as a
broad upper ridge slides across the Mississippi Valley and towards
the Appalachians. The previously stalled boundary to the south will
also begin to lift back north with the area back in a more typically
warm and humid airmass by early next week. At the same time, another
closed upper low is progged to drop into the Northern Plains with a
lead wave sliding across the Deep South. This will foster a pattern
change with wet and stormy weather returning as early as Sunday and
persisting through Tuesday to potentially Wednesday. Several rounds
of showers and storms will be possible during this timeframe, but
any focused flooding and/or severe weather threat is too nebulous to
pin down at this time range.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
At KCLT and elsewhere: VFR at all terminals thru the period, now
that the last remnants of the low cloud deck have lifted above 030
over the western Piedmont of NC. The main issue will be the westerly
cross-wind at KCLT and the frequent gusty winds. As long as the
main cold front is to the west, the direction at KCLT should favor
S of W on the whole, then shifting to WNW behind the front around
sunset. Deep mixing will keep the gusts at most terminals into
the mid/late evening. Winds will remain NW overnight with clear
sky, then increase again mid-morning Thursday as the overnight
inversion mixes out. Expect frequent gusts again from the WNW
through Thursday afternoon.

Outlook: Winds will remain gusty again Friday, but not as strong
as Thursday. VFR and mostly dry through the first half of the
weekend. Shower and thunderstorms chances return late this weekend
into early next week. Mountain valley fog and low stratus are
possible each morning over the weekend.

&&

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

&&

$$

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