North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

922
FXUS62 KCHS 271117
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
717 AM EDT Tue Oct 27 2026

.WHAT HAS CHANGED...
Aviation section has been updated to reflect the 12Z aviation
forecast.

&&

.KEY MESSAGES...
- 1) A multi-day coastal flooding event will slowly diminish
  through the remainder of the week.

- 2) Enhanced northeast flow will lead to a high risk for rip
  currents into mid-week along South Carolina and Georgia beaches.

- 3) Dry and warming conditions will continue through the week before
  rain chances increase late weekend.

&&

.DISCUSSION...
.KEY MESSAGE 1: A multi-day coastal flooding event will continue
this week.

Astronomical tides will continue to rise into early
this week due to today`s full moon (10/26) and the lunar
perigee (10/28). However, northeasterly winds have begun to
relax leading to weaker tidal departures. While the
aforementioned full moon and lunar perigee will keep tides
running higher than normal, tidal flooding should slowly
decrease with each tidal cycle as we move further away from the
full moon.

Rest of This Week: Coastal flooding is forecast to occur with
the Tuesday, Wednesday and Thursday morning high tide cycles,
with minor flooding possible through the end of the week. During
these cycles, it is possible that the Charleston Harbor could
exceed moderate flood stage. Coastal Flood Advisories will
likely be needed through Thursday for the morning tidal cycles
across Charleston and Colleton counties.


KEY MESSAGE 2:Enhanced northeast flow will lead to a high risk for
rip currents along the South Carolina and Georgia beaches.

Gusty northeast winds, persistent long-period swell, and continuous
wave action will support dangerous rip currents along all southeast
SC/GA beaches. A High Risk for rip currents is in place for all area
beaches through Wednesday, driven by 5+ ft swells every 9-10
seconds. This enhanced risk could continue through Saturday, October
31, which marks the end of the 2026 surf season and the final
routine issuance of the Surf Zone Forecast.



KEY MESSAGE 3: Dry and warming conditions will continue through the
week before rain chances increase late weekend.

Rinse and repeat through most of the week as high pressure
remains in full control of the forecast. With upper ridging in
place across the deep south, dry cognitions should prevail
through Friday The ridge is expected to slowly break down and
drift east with time over the Carolinas and Georgia by Wednesday
or Thursday. This will allow temps to warm a few degrees above
normal during the week with afternoon highs in the mid 70s near
the coast and upper 70s/around 80 inland. Strong radiational
cooling nights under high pressure should allow temps to dip
into the low/mid 40s inland to mid- upper 50s near the coast for
the next couple nights, but will also trend warmer through the
week.

The extended period of drier weather looks to come to an end late
weekend as the pattern looks a little more active late
weekend into early next week. High pressure should begin to
break down this weekend as the first of a couple upper level
lows pass across the Deep South and into the Mid-Atlantic. This
should bring chances of showers and/or perhaps a few thunderstorms
across South Carolina and Georgia heading into early next week
and beyond.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
VFR Conditions are expected to continue throughout the forecast
with northeasterly winds relaxing to around 10 knots gusting to
15 knots. Winds are expected to relax overnight and some MVFR
ceilings could move in from the north near the end of the
forecast early Wednesday morning.

Extended Aviation Outlook: Breezy north-northeast winds are expected
at KCHS/KJZI/KSAV daily through the week. There are no other high
confidence concerns.

&&

.MARINE...
Today and Tonight: A tight pressure gradient persists between high
pressure wedged inland to the north and weak low pressure near the
Bahamas. Elevated winds and seas will continue through today and
tonight, maintaining Small Craft Advisories across all nearshore
waters (outside the Charleston Harbor) and offshore GA waters.
Expect north-northeast wind gusts of 25 to 30 kt, nearshore seas of
4 to 8 ft, and offshore seas of 7 to 10 ft (highest across Georgia
waters).

Wednesday through Sunday: The persistent inland high pressure wedge
will maintain elevated winds and seas with little improvement
through Thursday night. Conditions will improve drastically Friday
into Saturday as the pressure gradient over the waters relaxes,
bringing an end to the prolonged stretch of hazardous conditions and
long-duration Small Craft Advisories.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...High Risk for Rip Currents through this evening for GAZ217-219-239-
     241.
     Coastal Flood Advisory until noon EDT today for GAZ217-219-239-
     241.
SC...High Risk for Rip Currents through this evening for SCZ148>151.
     Coastal Flood Advisory until noon EDT today for SCZ148>151.
MARINE...Small Craft Advisory until 2 PM EDT Friday for AMZ360.
     Small Craft Advisory until 8 PM EDT Friday for AMZ362-364.
     Small Craft Advisory until 8 AM EDT Saturday for AMZ384.

&&

$$

Black/BRS