899
FZUS52 KCHS 060859
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
459 AM EDT Sun Jul 6 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

AMZ300-062115-
459 AM EDT Sun Jul 6 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Tropical Storm Chantal will weaken over northeast South Carolina
today as the system moves away from the area. Weak high pressure
will then rebuild across the area and prevail through the
upcoming week. Refer to the latest advisory on Chantal issued by
the National Hurricane Center.

$$

AMZ330-062115-
Charleston Harbor-
459 AM EDT Sun Jul 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...W winds 15 to 20 kt with gusts to 25 kt, diminishing to 10
to 15 kt. Waves 1 to 2 ft early. A chance of showers. A slight
chance of tstms this morning, then a chance of tstms this
afternoon.
.SUN...SW winds 10 to 15 kt. 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. A chance of showers and tstms
early in the evening, then a slight chance of showers and tstms
in the late evening and early morning.
.MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. A slight 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 slight chance of showers and tstms early in the
evening.
.TUE...SW winds 5 to 10 kt. A chance of showers and tstms in the
afternoon.
.TUE NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms
early in the evening.
.WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. A chance of showers and tstms in the afternoon.
.WED NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms.
.THU...SW winds 10 to 15 kt. A chance of showers and tstms in the
morning, then showers and tstms likely in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt. Showers and tstms likely early
in the evening, then a chance of showers and tstms in the late
evening and overnight.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 84 degrees.

$$

AMZ350-062115-
Waters from South Santee River to Edisto Beach SC out 20 NM-
459 AM EDT Sun Jul 6 2025

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

.TODAY...Tropical storm conditions possible. SW winds 20 to 25 kt
with gusts to 30 kt, except 25 to 35 kt with gusts to 40 kt far N
portions. Winds diminishing to 10 to 15 kt with gusts to 20 kt
throughout. Seas 6 to 8 ft, subsiding to 4 to 6 ft this afternoon.
Wave Detail: SE 7 ft at 8 seconds and W 2 ft at 3 seconds. A
slight chance of tstms. A chance of showers until late afternoon,
then a slight chance of showers late.
.SUN...Tropical storm conditions expected. SW winds 15 to 20 kt
with gusts to 25 kt, except 25 to 35 kt N portions. Winds
diminishing to 15 to 20 kt with gusts to 25 kt throughout. Seas 6
to 8 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: SE
7 ft at 8 seconds and W 2 ft at 3 seconds. A slight chance of
tstms. A chance of showers until late afternoon, then a slight
chance of showers late.
.SUN NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 4 to 5 ft. Wave Detail: S 4 ft at 7 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 slight chance of tstms. A slight chance of
showers.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
SE 4 ft at 7 seconds. A slight chance of showers and tstms early
in the evening. A slight chance of showers and tstms after
midnight.
.TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. 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.
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms early in the morning, then a chance of showers
and tstms in the late morning and afternoon.
.WED NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
A chance of showers and tstms.
.THU...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Showers likely with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-062115-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
459 AM EDT Sun Jul 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...W winds 15 to 20 kt with gusts to 25 kt, diminishing to 10
to 15 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft this afternoon.
Wave Detail: E 5 ft at 8 seconds and W 1 foot at 3 seconds. A
slight chance of showers. A slight chance of tstms late.
.SUN...W winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: E 5 ft at 8 seconds and W
1 foot at 3 seconds. A slight chance of showers. A slight chance
of tstms 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 7 seconds and SW 2 ft at 3 seconds.
A chance of showers and tstms early in the evening, then a slight
chance of showers and tstms in the late evening and early
morning.
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 7 seconds.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE
3 ft at 7 seconds.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 7 seconds. A slight chance of showers and tstms.
.TUE NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. 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 with gusts to 20 kt. Seas 3 ft.
A chance of showers and tstms.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. A chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-062115-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
459 AM EDT Sun Jul 6 2025

.TODAY...W winds 10 to 15 kt, becoming SW 5 to 10 kt this
afternoon. Seas 4 to 5 ft, subsiding to 3 to 4 ft this afternoon.
Wave Detail: E 4 ft at 8 seconds. A slight chance of showers and
tstms late.
.SUN...W winds 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in
the afternoon. Wave Detail: E 4 ft at 8 seconds. A slight chance
of showers and tstms late.
.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 slight chance of
showers and tstms early in the evening.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds. A slight chance of showers and tstms late.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 8 seconds. A slight chance of
showers and tstms early in the evening.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 8 seconds. 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. A chance of tstms until early morning, then a slight
chance of tstms late.
.THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
A slight chance of tstms in the morning, then a chance of tstms
in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt. Seas 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.

$$

AMZ374-062115-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
459 AM EDT Sun Jul 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.TODAY...W winds 10 to 15 kt. Seas 5 to 6 ft, subsiding to 4 to
5 ft. Wave Detail: NE 5 ft at 7 seconds and SW 1 foot at 2
seconds.
.SUN...SW winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 7 seconds and SW 1 foot at 2 seconds.
.SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 7 seconds and S 2 ft at 3 seconds.
A slight chance of showers and tstms in the evening. A slight
chance of showers and tstms late.
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 7 seconds and SW 2 ft at 4 seconds. A slight chance of showers
and tstms early 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 after midnight.
.TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and E 1 foot at 14 seconds. A slight chance of
showers and tstms.
.TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of
tstms. A slight chance of showers until early morning, then a
chance of showers late.
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
tstms. A chance of showers until late afternoon, then a slight
chance of showers late.
.WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
A chance of showers and tstms.
.THU...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. A chance of showers and tstms.

Winds and seas higher in and near tstms.

$$