586
FZUS52 KCHS 110940
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
540 AM EDT Sat Oct 11 2025

South Santee River SC to Savannah GA out 20 NM and Savannah GA to
Altamaha Sound GA out 60 NM, including Charleston Harbor and
Grays Reef National Marine Sanctuary

AMZ300-112200-
540 AM EDT Sat Oct 11 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
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.

$$

AMZ330-112200-
Charleston Harbor-
540 AM EDT Sat Oct 11 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.TODAY...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. Showers likely with a slight chance of tstms early this
morning, then showers late this morning.
.TONIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to
3 ft. Showers likely. Vsby 1 to 3 NM after midnight.
.SUN...NW winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft.
A chance of showers.
.SUN NIGHT...NW winds 10 to 15 kt. A chance of showers.
.MON...NW winds 10 to 15 kt.
.MON NIGHT...N winds 5 to 10 kt.
.TUE...N winds 10 kt.
.TUE NIGHT...N winds 10 kt.
.WED...N winds 10 kt.
.WED NIGHT...N winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 73 degrees.

$$

AMZ350-112200-
Waters from South Santee River to Edisto Beach SC out 20 NM-
540 AM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...N winds 25 to 30 kt with gusts to 40 kt. Seas 8 to
10 ft. Wave Detail: E 10 ft at 10 seconds. Showers with a slight
chance of tstms this morning, then showers this afternoon with
vsby 1 to 3 NM.
.TONIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 8 to
10 ft. Wave Detail: NE 10 ft at 10 seconds. Showers likely.
.SUN...NW winds 25 to 30 kt, diminishing to 20 kt in the
afternoon. Seas 7 to 9 ft, subsiding to 6 to 8 ft in the
afternoon. Wave Detail: E 9 ft at 10 seconds and NW 4 ft at
4 seconds, becoming E 7 ft at 10 seconds and NW 4 ft at
4 seconds. A chance of showers.
.SUN NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
7 ft. Wave Detail: E 6 ft at 11 seconds and NW 4 ft at 4 seconds.
A chance of showers.
.MON...NW winds 15 to 20 kt. Seas 5 to 6 ft, subsiding to 4 to
6 ft in the afternoon. Wave Detail: E 5 ft at 10 seconds and NW
3 ft at 4 seconds, becoming E 5 ft at 10 seconds and NW 3 ft at
3 seconds. A slight chance of showers in the morning.
.MON NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 4 to
5 ft. Wave Detail: NE 5 ft at 10 seconds and W 2 ft at 3 seconds.
.TUE...N winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-112200-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
540 AM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...N winds 25 to 30 kt with gusts to 40 kt. Seas 8 to
10 ft. Wave Detail: E 10 ft at 10 seconds. A slight chance of
tstms early this morning. Showers likely this morning, then a
chance of showers this afternoon.
.TONIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 7 to
9 ft. Wave Detail: NE 9 ft at 10 seconds. Showers likely, mainly
in the evening.
.SUN...NW winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft,
subsiding to 6 to 8 ft in the afternoon. Wave Detail: E 7 ft at
10 seconds and NW 5 ft at 4 seconds, becoming E 6 ft at
10 seconds and NW 4 ft at 4 seconds. A chance of showers.
.SUN NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
7 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 5 ft
at 11 seconds and NW 4 ft at 4 seconds, becoming E 5 ft at
12 seconds and NW 4 ft at 4 seconds. A chance of showers, mainly
in the evening.
.MON...NW winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 6 ft,
subsiding to 4 to 5 ft in the afternoon. Wave Detail: E 5 ft at
12 seconds and NW 3 ft at 4 seconds, becoming E 5 ft at
11 seconds.
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: NE 4 ft at 11 seconds,
becoming NE 4 ft at 10 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-112200-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
540 AM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...N winds 30 kt. Seas 8 to 10 ft. Wave Detail: NE 9 ft at
9 seconds. A slight chance of tstms this morning. A chance of
showers.
.TONIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: NE
9 ft at 10 seconds. A chance of showers.
.SUN...NW winds 20 to 25 kt. Seas 6 to 8 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: NE 8 ft at 10 seconds,
becoming E 7 ft at 10 seconds. A chance of showers.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 5 to 7 ft, subsiding to
4 to 6 ft after midnight. Wave Detail: E 6 ft at 11 seconds,
becoming E 5 ft at 12 seconds. A chance of showers, mainly in the
evening.
.MON...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 12 seconds.
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E
5 ft at 11 seconds.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-112200-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
540 AM EDT Sat Oct 11 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...N winds 30 to 35 kt. Seas 10 to 12 ft, building to 10 to
13 ft this afternoon. Wave Detail: NE 12 ft at 10 seconds,
becoming NE 12 ft at 9 seconds. Showers likely with a chance of
tstms this morning, then a chance of showers with a slight chance
of tstms this afternoon.
.TONIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 10 to
13 ft, subsiding to 9 to 13 ft after midnight. Wave Detail: NE
12 ft at 9 seconds, becoming NE 11 ft at 10 seconds. A slight
chance of tstms in the evening. A chance of showers.
.SUN...NW winds 20 to 25 kt with gusts to 30 kt. Seas 9 to 11 ft,
subsiding to 8 to 10 ft in the afternoon. Wave Detail: NE 10 ft
at 10 seconds, becoming NE 9 ft at 10 seconds. A chance of
showers.
.SUN NIGHT...NW winds 15 to 20 kt with gusts to 25 kt. Seas 7 to
9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: NE 8 ft
at 11 seconds, becoming NE 7 ft at 11 seconds. A chance of
showers, mainly in the evening.
.MON...N winds 15 to 20 kt. Seas 6 to 8 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: NE 6 ft at 11 seconds,
becoming NE 7 ft at 11 seconds.
.MON NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 5 to
7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: NE 6 ft
at 9 seconds.
.TUE...N winds 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.
.WED...N winds 15 to 20 kt. Seas 4 to 5 ft.
.WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$