North Charleston, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

139
FXUS62 KCHS 280239
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
1039 PM EDT Sun Sep 27 2026

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

&&

.KEY MESSAGES...
- 1) The coastal flood risk will linger into early week.

- 2) Rising temperatures through Tuesday, remaining above normal
  next week.

&&

.DISCUSSION...
KEY MESSAGE 1: The coastal flood risk will linger into early week.

As a nor`easter churns offshore of the Eastern Seaboard, steady west-
northwesterly flow will continue across the Lowcountry and southeast
Georgia. Even though this will create a less favorable environment
for coastal flooding, the astro tide will still be elevated given
the recent full moon. Thus, still expect to see minor coastal
flooding with each high tide cycle through early next week (esp. for
the Charleston Harbor).

Charleston Harbor: With the ongoing environmental conditions and
recently observed departures, tidal levels could reach ~7.3 ft
MLLW during the 925 AM high tide Monday morning. A Coastal Flood
Advisory could eventually be needed for Charleston and Coastal
Colleton Counties.

Fort Pulaski: While tides will remain elevated at Ft Pulaski, they
should remain below minor flooding, peaking around 9 to 9.1 ft MLLW
through the early part of this week.

KEY MESSAGE 2: Rising temperatures through Tuesday, remaining above
normal next week.

Temperatures will continue to rise to start off the week as upper
level ridging strengthens, with the coastal trough pushing further
inland and up the coast each day as a surface high pressure moves
into the Ohio River Valley. As a result, Monday will be a touch
warmer as the mid-80s build northwards and upper 80s become likely
south of the I-16 corridor, with widespread mid 80s to lower 90s on
Tuesday. Higher PWATs build into the region Thursday into Friday as
a subtropical high pressure develops off to our north, though
precipitation chances remain low due to the ridge axis sliding
overhead during that period. Better chances for rain come as the
ridge axis slides eastwards later this week into the weekend.

&&

.AVIATION /02Z MONDAY THROUGH FRIDAY/...
VFR conditions are expected to prevail at CHS/JZI/SAV terminals
through 00Z Tuesday.

Extended Aviation Outlook: VFR.

&&

.MARINE...
Through Thursday: No marine concerns expected as surface high
pressure becomes the dominant feature across the local waters. As a
high pressure shifts northeastwards of the area on Tuesday, a weak
coastal sea breeze will develop in the afternoon hours, leading to
marginally breezy conditions along the coast.

&&

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

&&

$$