463
FZUS52 KCHS 050853
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
453 AM EDT Sat Jul 5 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

AMZ300-052115-
453 AM EDT Sat Jul 5 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Tropical Depression Three is forecast to strengthen to a tropical
storm today before moving onshore late tonight into Sunday
morning along the South Carolina coast. High pressure will
rebuild next week. Refer to the latest advisory on Tropical
Depression Three issued by the National Hurricane Center.

$$

AMZ330-052115-
Charleston Harbor-
453 AM EDT Sat Jul 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...TROPICAL STORM WATCH IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to
2 ft. A chance of tstms this morning. Showers likely. Tstms
likely this afternoon.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Waves 1 to 2 ft. A chance of tstms. Showers likely
until early morning, then a chance of showers late.
.SUN...W winds 10 to 15 kt. Showers likely.
.SUN NIGHT...SW winds 10 to 15 kt. Showers and tstms likely in
the evening, then a chance of showers with a slight chance of
tstms after midnight.
.MON...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. A slight chance of showers and tstms in the morning,
then a chance of showers and tstms in the afternoon.
.MON NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. A chance of showers and tstms early in the
evening.
.TUE...SW winds 5 to 10 kt. A slight chance of showers and tstms
in the afternoon.
.TUE NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms.
.WED...SW winds 5 to 10 kt. A slight chance of showers and tstms
in the morning, then a chance of showers and tstms in the
afternoon.
.WED NIGHT...SW winds 10 kt. A chance of showers and tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 85 degrees.

$$

AMZ350-052115-
Waters from South Santee River to Edisto Beach SC out 20 NM-
453 AM EDT Sat Jul 5 2025

...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...Tropical storm conditions possible. NE winds 20 to
25 kt, increasing to 25 to 30 kt with gusts to 35 kt this
afternoon. Seas 6 to 8 ft. Wave Detail: E 8 ft at 8 seconds.
Showers likely with a chance of tstms this morning, then showers
and tstms likely this afternoon.
.TONIGHT...Tropical storm conditions expected. NE winds 20 to
25 kt with gusts to 35 kt. Seas 6 to 8 ft, subsiding to 5 to 7 ft
after midnight. Wave Detail: E 8 ft at 8 seconds. A chance of
tstms. Showers likely until early morning, then a chance of
showers late.
.SUN...Tropical storm conditions possible. SW winds 25 to 30 kt.
Seas 6 to 8 ft. Wave Detail: E 7 ft at 7 seconds and SW 6 ft at
5 seconds. A chance of tstms. Showers likely until late
afternoon, then a chance of showers late.
.SUN NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 5 to 7 ft, subsiding to 3 to 4 ft after
midnight. Wave Detail: S 6 ft at 6 seconds. A chance of showers
and tstms.
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft
at 7 seconds. A chance of showers and tstms until late afternoon,
then a slight chance of showers and tstms late.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 7 seconds. A slight chance of showers and tstms.
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-052115-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
453 AM EDT Sat Jul 5 2025

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

.TODAY...NE winds 20 to 25 kt, increasing to 25 to 30 kt this
afternoon. Seas 5 to 7 ft. Wave Detail: E 7 ft at 7 seconds. A
chance of tstms.
.TONIGHT...Tropical storm conditions possible. N winds 20 to
25 kt with gusts to 30 kt, diminishing to 10 to 15 kt with gusts
to 20 kt after midnight. Seas 5 to 7 ft, subsiding to 4 to 6 ft
after midnight. Wave Detail: E 6 ft at 8 seconds. Showers likely
in the evening. A chance of tstms. A chance of showers after
midnight.
.SUN...W winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: SE 4 ft at 8 seconds. A
chance of showers. A slight chance of tstms in the morning, then
a chance of tstms in the afternoon.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 3 ft at 8 seconds and E 2 ft at 7 seconds.
A chance of tstms in the evening. A chance of showers. A slight
chance of tstms after midnight.
.MON...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at
7 seconds. A slight chance of showers and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 7 seconds. A slight chance of showers and tstms early in
the evening.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms in the late morning and afternoon.
.TUE NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms in the morning, then a chance of showers and
tstms in the afternoon.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers. A chance of tstms until early morning, then a slight
chance of tstms late.

Winds and seas higher in and near tstms.

$$

AMZ354-052115-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
453 AM EDT Sat Jul 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
6 ft, building to 5 to 6 ft this afternoon. Wave Detail: NE 6 ft
at 6 seconds. A chance of showers. A slight chance of tstms early
this morning, then a chance of tstms late this morning.
.TONIGHT...N winds 20 to 25 kt, becoming NW 10 to 15 kt after
midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: E 6 ft at 7 seconds. Showers likely with a chance of
tstms in the evening, then a slight chance of showers and tstms
after midnight.
.SUN...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 8 seconds and SW 2 ft at 3 seconds. A slight chance of showers
and tstms in the morning, then a chance of showers and tstms in
the afternoon.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 7 seconds and S 2 ft at 4 seconds. A chance of showers
and tstms early in the evening. A slight chance of tstms late in
the evening. A slight chance of showers in the late evening and
early morning.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 7 seconds. A slight chance of showers and tstms in the
afternoon.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SE 3 ft at 8 seconds and S 2 ft at 4 seconds. A slight chance of
showers and tstms early in the evening.
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms in the afternoon.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms in the morning, then a chance of showers and
tstms in the afternoon.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms until early morning, then a slight chance of
showers and tstms late.

Winds and seas higher in and near tstms.

$$

AMZ374-052115-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
453 AM EDT Sat Jul 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to
6 ft, building to 6 to 7 ft this afternoon. Wave Detail: E 6 ft
at 7 seconds. A chance of tstms.
.TONIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Seas 5 to 7 ft, subsiding to 5 to 6 ft after midnight.
Wave Detail: NE 6 ft at 8 seconds. Showers likely in the evening.
A chance of tstms. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft
at 7 seconds and SE 3 ft at 8 seconds. A slight chance of tstms.
A chance of showers until late afternoon, then a slight chance of
showers late.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 7 seconds.
A slight chance of tstms. A slight chance of showers early in the
evening, then a chance of showers in the late evening and
overnight.
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds and SW 2 ft at 5 seconds. A chance of showers with a
slight chance of tstms early in the morning, then a slight chance
of showers and tstms late in the morning.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 8 seconds and SW 2 ft at 4 seconds. A slight chance of
showers and tstms in the late evening and overnight.
.TUE...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of showers
and tstms until late afternoon.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms in the evening, then a chance of
showers and tstms after midnight.
.WED...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms until late afternoon, then a slight chance of showers and
tstms late.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$