North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

942
FXUS62 KCHS 010014
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
814 PM EDT Sat Oct 31 2026

.WHAT HAS CHANGED...
All sections have been updated.

&&

.KEY MESSAGES...
- 1) Quiet conditions continue with somewhat unsettled weather
  possible Sunday into Monday.

&&

.DISCUSSION...
KEY MESSAGE 1: Quiet conditions continue with somewhat
unsettled weather possible Sunday into Monday.

Tonight: Aloft, h500 heights will continue to fall as
shortwaves move through the flow into the overnight period. At
the surface, a wedge of high pressure will continue to shift
into the northeast, with a coastal trough just offshore. The
resulting increased surface pressure gradient is creating the
occasional gusty winds, especially closer to the coast. Though,
they are expected to ease a bit overnight. The coastal trough
will push light showers ashore over southeast Georgia overnight.
Though, there remains some uncertainty on just how far inland
the showers are able to get before dissipating. Either way, we
continue to have chance POPs mainly south of I-16. Any
precipitation amounts will remain light, with totals by sunrise
Sunday expected to remain under a quarter of an inch.

Extended: High pressure will remain the primary feature across the
region through early next week. The high will be centered near the
Mid Atlantic and southern New England Sunday into Monday before
drifting eastward over the Atlantic Tuesday into the middle of the
week. A coastal trough is expected to develop just off the GA/SC
coast and provide sufficient convergence to generate showers. This
shower activity will likely favor the GA coast Sunday into Monday.
The shower potential will then gradually spread to the entire coast
Tuesday into Wednesday as the parent high slips to the east and
allows the trough to attempt to push onshore. Any rainfall that does
occur shouldn`t be particularly impactful, with most places likely
only seeing a few hundredths of an inch.

The gradient will remain sufficiently tight to drive elevated
northeast flow Sunday through Tuesday. Gusts into the 20-25 mph
range are expected, especially along the coast each afternoon and
evening.

&&

.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
00Z TAFs:

CHS/JZI: Both sites are expected to remain rain-free. However,
the concern is how far ceilings drop overnight. Observations
around the area indicate SCT-BKN 4,000 ft ceilings. Though,
MOS expects VFR to prevail. There is enough concern that we
introduced SCT025. But it`s certainly possible both sites could
go MVFR with short notice overnight. If so, ceilings will rise
back to VFR in the morning hours as ENE winds increase and
become gusty. These winds are expected to ease late in the TAF
time period.

SAV: MVFR ceilings are being observed at this site along with
nearby sites. This is due to light scattered showers moving
onshore well to the south. While these showers could briefly
approach or bring brief impacts overnight, confidence was not
high enough to include SHRA or VCSH in the current TAF. Though,
MVFR is expected to prevail overnight. Ceilings will rise back
to VFR in the morning hours as the light shower threat
dissipates, and ENE winds increase and become gusty. These
winds are expected to ease late in the TAF time period.

Extended aviation: Breezy northeast winds will continue late Sunday
through Monday. Rain chances will increase Sunday into early next
week which could bring the potential for periodic flight
restrictions.

&&

.MARINE...
Tonight: Winds across the Charleston Harbor have eased a few
hours earlier than expected, so we dropped the Small Craft
Advisory for that location. The remaining Small Craft Advisories
are still in effect. Otherwise, behind the front that pushed
through earlier, breezy northeasterly winds have been moved in
producing gusts of 25-30 kts across our local waters. Expect
seas 6-7 ft in the nearshore zones and 7-8 ft in the offshore
zones.

Sunday through Thursday: The overall setup will continue to feature
high pressure centered off to the north with a pinched gradient
across the local waters. This will drive continued northeast flow
through the remainder of the weekend and early next week. Frequent
gusts into the 25-30 knot range are expected into Monday, along with
seas in the 5-7 ft range. These conditions will support an extended
period of Small Craft Advisories. Winds should gradually diminish
Tuesday into Wednesday as the gradient relaxes. However, seas will
remain elevated enough to keep the advisories going through Tuesday
night. By Wednesday night and Thursday, winds will diminish even
more as a cold front approaches from the west.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...Small Craft Advisory until 11 PM EDT this evening for AMZ340.
     Small Craft Advisory until 7 AM EDT Wednesday for AMZ360-362-
     364.
     Small Craft Advisory until 7 AM EDT Thursday for AMZ384.

&&

$$