Matthews, North Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

748
FXUS62 KGSP 101047
AFDGSP

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
647 AM EDT Sun Aug 10 2025

.SYNOPSIS...
A more typical summertime pattern resumes today and into next week
as daily chances for afternoon thunderstorms return. Temperatures
remain at or below normal, but gradually warm through the week.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 645 AM: Varying amounts of stratocu across the area early this
morning should become more widespread through the morning. Spotty
light showers are possible as well, mainly over the Upper Savannah
River valley.

An inverted trough near the GA/SC coast and the cold air damming
high remain in place through the period. A moist southeasterly flow
continues through the period as well. Isentropic lift remains
relatively weak this morning but increases this afternoon and
continues tonight. Weak instability develops this afternoon as weak
heating takes place. Expect scattered showers to develop during the
afternoon and move northeast across the area. Can`t rule out a rogue
lightning strike or two but overall chance of TSRA is low. QPF will
be on the lighter side with spotty moderate values. Highs will again
be below normal with the clouds and scattered showers, similar to
Saturday`s highs.

Scattered showers continue overnight in the continued upslope flow
and isentropic lift. Again, a rogue lightning pulse is possible
during the evening with similar QPF values during the day. Lows will
be near normal.

&&

.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
As of 120 AM EDT Sunday: Starting off the work week with a return
the more typical summertime pattern. The surface high pressure
across the northeast is very slow to depart, but the Bermuda high to
the south starts to amplify and become the dominant system over the
area by Monday. Synoptically, the ridge persists over the eastern
CONUS and by Tuesday, the flow aloft becomes more broad as the
trough out west weakens. Moisture advection continues as surface
winds turn more E/SE, keeping the 2 inch PWAT line along and south
of I-85 through the period. The added moisture into the area and
daily increased instability bumps up PoPs into widespread showers
and thunderstorms for a few locations to the south (70-85%). The
better chance for these storms looks to remain in the southern zones
along and south of I-85. Given the weakened flow aloft, not
expecting much on the severe side, but areas that receive multiple
rounds of storms could have an isolated flash flood risk. By
Tuesday, the return of more typical pop-up convection continues,
bringing chance PoPs (50-70%) across the entire CWA. Temperatures
warm but still remain below normal for the short term.

&&

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
As of 125 AM EDT Sunday: Not a whole lot of change for the extended
period. A modest ridge over the southwest propagates eastward and
amplifies over the central/southeast CONUS by next weekend. This
broad flow aloft keeps the area in the typical summertime pattern
with daily chances for showers and thunderstorms. The CWA stays
locked into the western fringe of the surface high off the coast and
allows for a constant stream of moisture to envelop the area. PoPs
are more consistent and remain around chance (40-65%) each afternoon
through the end of the week. The higher chances will be in the
mountains as usual. QPF is minimal but areas that receive multiple
showers or thunderstorms could see an isolated flash flood risk.
Temperatures continue to rise toward the normal range through the
period with a few locations south of I-85 getting back into higher
heat indices by midweek. Still looks like the heat indices will
remain well under any Heat Advisory Criteria at this point.

&&

.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
At KCLT and elsewhere: Mainly VFR stratocu to start this morning.
Guidance has backed off on the chance of MVFR at KCLT/KHKY but kept
it to develop around 14Z at the rest of the sites. Have made this
adjustment to cigs, but can`t rule out MVFR at the other sites. Any
restrictions lift by 18Z. Increasing moisture and weak instability
develop by afternoon leading to scattered showers continuing into
the evening, so PROB30s in place for these. Can`t rule out a rogue
lightning strike, but chance low enough to keep precip as SHRA for
now. Scattered showers continue overnight with prevailing -SHRA for
these. MVFR cigs redevelop during the evening dropping to IFR
overnight. MVFR vsby with some IFR possible. NE wind continues
through the period, SE at KAVL. A rogue gust is possible as well.
Winds may toggle to ESE at KCLT overnight.

Outlook: Daily diurnal showers and thunderstorms with associated
restrictions return across the area each day this week.

&&

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

&&

$$

SYNOPSIS...CP
NEAR TERM...RWH
SHORT TERM...CP
LONG TERM...CP
AVIATION...RWH