213
FXUS62 KCHS 111234
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
834 AM EDT Sat Oct 11 2025

...COASTAL FLOOD WARNING ISSUED FOR COASTAL AREAS OF CHARLESTON
AND COLLETON COUNTIES...

.SYNOPSIS...
High pressure will prevail inland through early next week.
Meanwhile, a coastal low will linger through Saturday before
lifting north and eastward along the Atlantic coast.

&&

.NEAR TERM /THROUGH TONIGHT/...
An update has been issued to upgrade the Coastal Flood Advisory
to a Coastal Flood Warning for Charleston and coastal Colleton
and to issue a Coastal Flood Advisory for Tidal Berkeley. Levels
in Charleston Harbor are expected to peak 7.9-8.1 ft MLLW in the
Charleston Harbor.

Today and Tonight: A mid-level Low will be over the Southeast
U.S. At the surface, Low pressure along the east coast of FL
will slowly lift to the NE, while strengthening. There will be
a decent gradient of moisture across the area from west to east,
with the highest PWATs being offshore. This will lead to a
fairly wet day for our area, especially the coastal counties.
The NBM has POPs ranging from chance to categorical. The highest
QPF will be across the Charleston Tri-County and the immediate
coast, with lower QPF further south and inland. Also, expect
gusty northeast winds, especially along the coast. Therefore, we
have a Lake Wind Advisory in effect. The combination of cloudy
skies, rainfall, and gusty northeast winds will keep
temperatures below normal. Highs will generally be in the 60s
for our SC counties, while the 70 degree mark may be reached
across our GA counties. Lows will range from the upper 50s far
inland to the 60s everywhere else.

&&

.SHORT TERM /SUNDAY THROUGH TUESDAY/...
Coastal low begins to lift northeastward along the Atlantic
coast Sunday, allowing quieter conditions to gradually return.
That being said, will likely see a few isolated to scattered
showers persist through Sunday with highs only rising into the
upper 60s to lower 70s under lingering stratus. Fortunately,
should see accumulations remain on the lighter side, as totals
only range from a few hundredths to a few tenths. Outside of
this, will also see breezy winds continue, with direction
shifting more northwesterly. Otherwise, look for dry weather and
lighter winds to prevail heading into the new week, with highs
warming back into the upper 70s to lower 80s by Tuesday.

&&

.LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/...
Quiet conditions continue for the remainder of the extended
period as upper level ridging builds in from the west. This will
setup a relatively dry stretch, with no PoPs in the forecast.
In general, with the surface ridge expected to remain north of
the area through the period, we expect light north to northeast
winds, possibly becoming onshore near the coast each afternoon.
High temperatures near to slightly below normal in the mid 70s
to lower 80s. Low temperatures are expected to be slightly below
normal in the mid 50s to lower 60s.

&&

.AVIATION /12Z SATURDAY THROUGH WEDNESDAY/...
12Z TAFs: Rainfall will bring flight restrictions to all of the
TAF sites. Expect IFR during the day, along with gusty winds.
Conditions should start to gradually improve towards the end of
the TAF time period.

Extended Aviation Outlook: Though notably lighter than days
past, still expect breezy northwesterly winds to persist at all
terminals through Sunday. Periodic flight restrictions may also
occur with low CIGS as a low pressure lingers off the Southeast
coast.

&&

.MARINE...
Today and Tonight: Gale conditions will continue across the
Atlantic waters through tonight. Hence, Gale Warnings are in
effect. For the Charleston Harbor, winds should remain less than
gale force, so a Small Craft Advisory is in effect.

Sunday Onward: Winds and seas gradually improve by Sunday.
However, at least SCA conditions will persist for seas through
Sunday night for all waters, with offshore GA waters likely
persisting through Monday night. High pressure then builds from
the northwest, allowing conditions to fall below headline
criteria. However, still expect north-northeast winds to be 15
to 20 knots with seas 3 to 5 feet.

Rip Currents: Strong northeast winds and steep seas will
support a High Risk of rip currents at all beaches through
Sunday.

High Surf: Large breaking waves of 5+ feet are expected at all
area beaches through tonight. A High Surf Advisory is in effect
for the entire coastline.

&&

.TIDES/COASTAL FLOODING...
Charleston Harbor Tide Gage: The midday high tide cycle has the
potential to hit major coastal flooding (8 ft MLLW). Though
astronomical tide levels are starting to fall with each tide
cycle, persistent and strong northeast winds will keep large
tidal departures going. The midday astronomical high tide is
6.71 ft MLLW, but we could still be close to the 1.3 ft of tide
departure needed. The current tide forecast has been nudged up
to 8.0 ft MLLW.

Fort Pulaski Tide Gage: The midday high tide cycle has the
potential to hit moderate coastal flooding (10 ft MLLW). The
astronomical tide level will come down to 8.58 ft MLLW, but
persistent and strong northeast winds will maintain large tidal
departures. The current tide forecast is for 9.7 ft MLLW, but
could end up a bit higher and hit the moderate coastal flood
threshold of 10 ft MLLW.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...High Risk for Rip Currents until 8 PM EDT this evening for GAZ117-
     119-139-141.
     High Surf Advisory until 8 AM EDT Sunday for GAZ117-119-139-
     141.
     Coastal Flood Advisory until 3 PM EDT this afternoon for
     GAZ117-119-139-141.
SC...High Risk for Rip Currents until 8 PM EDT this evening for
     SCZ048>051.
     High Surf Advisory until 8 AM EDT Sunday for SCZ048>051.
     Coastal Flood Advisory until 3 PM EDT this afternoon for
     SCZ048-051.
     Lake Wind Advisory until 8 AM EDT Sunday for SCZ045.
     Coastal Flood Warning until 3 PM EDT this afternoon for SCZ049-
     050.
     Coastal Flood Advisory until 3 PM EDT this afternoon for
     SCZ052.
MARINE...Small Craft Advisory until 9 AM EDT Sunday for AMZ330.
     Gale Warning until 2 AM EDT Sunday for AMZ350-352-374.
     Gale Warning until 8 PM EDT this evening for AMZ354.

&&

$$