164
FZUS52 KCHS 101820
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
220 PM EDT Fri Oct 10 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

AMZ300-110700-
220 PM EDT Fri Oct 10 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.

$$

AMZ330-110700-
Charleston Harbor-
220 PM EDT Fri Oct 10 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT...

.THIS AFTERNOON...NE winds 20 to 25 kt with gusts to 30 kt. Waves
2 to 3 ft. Showers.
.TONIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Waves 2 to 3 ft. A chance of tstms. Showers.
.SAT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
Showers.
.SAT NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft. Showers likely, mainly in the evening.
.SUN...N winds 15 kt with gusts to 20 kt. A chance of showers.
.SUN NIGHT...N winds 10 to 15 kt. A chance of showers, mainly in
the evening.
.MON...N winds 10 to 15 kt.
.MON NIGHT...N winds 5 to 10 kt.
.TUE...N winds 10 to 15 kt.
.TUE 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 74 degrees.

$$

AMZ350-110700-
Waters from South Santee River to Edisto Beach SC out 20 NM-
220 PM EDT Fri Oct 10 2025

...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING...

.THIS AFTERNOON...NE winds 30 kt. Seas 8 to 10 ft. Wave Detail: E
10 ft at 8 seconds. Showers.
.TONIGHT...NE winds 25 to 30 kt. Seas 8 to 10 ft. Wave Detail: E
10 ft at 10 seconds. Showers with a chance of tstms.
.SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft
at 10 seconds. Showers with a slight chance of tstms in the
morning, then showers likely in the afternoon with vsby 1 to
3 NM.
.SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E
9 ft at 9 seconds. A slight chance of tstms. A chance of showers.
.SUN...N 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 8 ft at
10 seconds. A slight chance of tstms in the morning. A chance of
showers.
.SUN NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: NE 7 ft
at 11 seconds, becoming NE 6 ft at 12 seconds. A chance of
showers, mainly in the evening.
.MON...N winds 15 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.
.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.

Winds and seas higher in and near tstms.

$$

AMZ352-110700-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
220 PM EDT Fri Oct 10 2025

...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING...

.THIS AFTERNOON...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave
Detail: E 9 ft at 8 seconds. Showers.
.TONIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E
8 ft at 8 seconds. Showers with a chance of tstms.
.SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft
at 10 seconds. Showers likely, mainly in the morning.
.SAT NIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 7 to 9 ft, subsiding to 6 to 8 ft after
midnight. Wave Detail: E 8 ft at 9 seconds, becoming NE 8 ft at
10 seconds. A chance of showers with a slight chance of tstms.
.SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the
afternoon. Wave Detail: E 7 ft at 10 seconds, becoming E 6 ft at
10 seconds. A chance of showers.
.SUN NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 6 ft
at 10 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.
.MON NIGHT...NW winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 3 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-110700-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
220 PM EDT Fri Oct 10 2025

...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING...

.THIS AFTERNOON...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave
Detail: NE 8 ft at 8 seconds. Showers.
.TONIGHT...NE winds 25 to 30 kt. Seas 7 to 8 ft, subsiding to
6 to 8 ft after midnight. Wave Detail: NE 8 ft at 8 seconds.
Showers with a chance of tstms.
.SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft
at 10 seconds. Showers likely with a slight chance of tstms in
the morning, then a chance of showers in the afternoon.
.SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft, subsiding to
6 to 8 ft after midnight. Wave Detail: NE 9 ft at 10 seconds,
becoming NE 8 ft at 10 seconds. A chance of showers. A slight
chance of tstms after midnight.
.SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the
afternoon. Wave Detail: NE 7 ft at 10 seconds, becoming E 7 ft at
10 seconds. A slight chance of tstms. A chance of showers, mainly
in the morning.
.SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E
6 ft at 10 seconds. A slight chance of showers.
.MON...N winds 10 to 15 kt. Seas 4 to 5 ft.
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.
.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.

Winds and seas higher in and near tstms.

$$

AMZ374-110700-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
220 PM EDT Fri Oct 10 2025

...GALE WARNING IN EFFECT THROUGH LATE SATURDAY NIGHT...

.THIS AFTERNOON...NE winds 25 to 30 kt. Seas 8 to 9 ft. Wave
Detail: NE 9 ft at 8 seconds. Showers.
.TONIGHT...NE winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Seas 8 to 9 ft. Wave Detail: NE 9 ft at 10 seconds.
Showers with a chance of tstms. Vsby 1 to 3 NM in the evening.
.SAT...N winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail: NE
11 ft at 10 seconds. A slight chance of tstms. Showers, mainly in
the morning.
.SAT NIGHT...N winds 25 to 30 kt. Seas 9 to 12 ft, subsiding to
9 to 11 ft after midnight. Wave Detail: NE 11 ft at 9 seconds,
becoming NE 11 ft at 10 seconds. A chance of showers with a
slight chance of tstms.
.SUN...N winds 20 to 25 kt with gusts to 30 kt. Seas 8 to 10 ft,
subsiding to 7 to 9 ft in the afternoon. Wave Detail: NE 10 ft at
10 seconds, becoming NE 9 ft at 10 seconds. A chance of showers
with a slight chance of tstms.
.SUN NIGHT...N 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 10 seconds, becoming NE 7 ft at 11 seconds. A chance of
showers, mainly in the evening.
.MON...N winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...N winds 10 to 15 kt. Seas 5 to 6 ft.
.TUE...N winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$