Moncks Corner, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

954
FXUS62 KCHS 140545
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
Issued by National Weather Service Columbia SC
145 AM EDT Wed May 14 2025

.SYNOPSIS...
Broad low pressure will drift north away from the region through
Wednesday. A ridge of high pressure will generally remain across
the area through the weekend, providing dry and hot conditions.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 140 AM, KCLX detected clusters of thunderstorms over
Jasper and Beaufort Counties, tracking to the NE. This storms
have managed to track across SE GA earlier tonight. These storms
will likely reach the coast over the next hour. The updated
forecast will extended a swath of 20 PoPs to highlight the
storms. The rest of the night appears generally dry with
decreasing cloud cover. Lows will range from the mid 60s well
inland to the lower 70s at the beaches and Downtown Charleston.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
Wednesday: A closed low situated over the Mid-west will
continue to slowly shift northeastward and gradually transition
into an elongated trough. Coming down to the surface, an
associated frontal boundary will meander well offshore over the
Atlantic waters. With cool mid-level temperatures and daytime
heating, scattered showers and thunderstorms are possible in the
afternoon with the sea breeze shifting onshore. Light south-
southwesterly flow will persist through the day with possible
becoming a bit gustier in the afternoon sea breeze. Highs are
forecast to be around normal with temperatures climbing into the
mid to upper 80s, and overnight lows in the mid to upper 60s
(with low 70s along the beaches).

Thursday and Friday: Finally this elongated trough will shift
off the Eastern Seaboard Thursday afternoon and allow for strong
upper- lvl ridging to build over the Deep South. At the
surface, high pressure should govern the overall pattern for
Thursday and Friday. Dry and quiet weather will settle over the
region and temperatures will be near average to above-average.
Highs will climb into the upper 80s to low 90s on Thursday and
low to mid 90s on Friday. Something to look out for .. with low
70s and high RH values, heat index values could reach just
around 100F on Friday afternoon making it feel quite unbearable
outside.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
Upper-lvl ridging will govern the overall pattern for the
Southeast through the weekend, with zonal flow in place as well.
There is some indication of a shortwave trough traversing
through the zonal flow on Sunday. In general, it stays dry and
quiet through the weekend with possible showers returning on
Sunday evening ahead of an approaching frontal boundary.
Temperatures will be above average for this time of year, with
highs climbing into the low 90s. Combined with high RH values,
heat index values will reach into the mid to upper 90s through
the period ..making it feel very much like summer through the
period.

&&

.AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
Prior to the 6Z TAFs, a cluster of thunderstorms was departing
the KSAV terminal. The KSAV TAF will end the mention of TSRA by
7Z. Given light winds, wet ground, and decreasing cloud cover,
the concern for the pre-dawn hours will be the formation of fog
across KSAV, highlighted with MIFG from 7-13Z. KCHS and KJZI
should maintain VFR conditions with light and steady SW winds.
High resolution guidance indicates that a sea breeze will
gradually push inland this afternoon, primarily across the SC
Lowcountry. The sea breeze may trigger isolated to scattered
showers and thunderstorms over KCHS and KJZI between 17-21Z,
highlighted with a PROB30.

Extended Aviation Outlook: Brief flight restrictions are
possible on Wednesday with the aforementioned showers and
thunderstorms, otherwise prevailing VFR.

&&

.MARINE...
Tonight: Southwest winds will prevail tonight. Speeds will
average 10-15 kt with seas 2-4 ft.

Wednesday through Sunday: Conditions look to remain quite
through the period and well below Small Craft Advisory criteria.
South southwesterly flow should persist through the period with
winds generally 10 to 15 kts, or less. Seas will average 2 to 4
ft.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.

&&

$$

NEAR TERM...NED
SHORT TERM...Dennis
LONG TERM...Dennis
AVIATION...NED
MARINE...Dennis/ST