480
FZUS52 KCHS 150438
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1238 AM EDT Sat Mar 15 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

AMZ300-151715-
1238 AM EDT Sat Mar 15 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A strong cold front will approach from the west Saturday and push
offshore Sunday evening. High pressure will prevail for much of
next week before another front impacts the area Thursday.

$$

AMZ330-151715-
Charleston Harbor-
1238 AM EDT Sat Mar 15 2025

.REST OF TONIGHT...SE winds 5 to 10 kt. Patchy fog, then areas of
fog late with vsby 1 NM or less.
.SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. Areas of fog in the morning. Isolated
showers in the afternoon. Vsby 1 NM or less in the morning.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. A slight
chance of showers after midnight.
.SUN...S winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft.
A chance of tstms. A chance of showers in the morning, then
showers in the afternoon.
.SUN NIGHT...SW winds 10 to 15 kt. A chance of tstms. Showers.
.MON...NW winds 10 kt. A chance of showers in the morning.
.MON NIGHT...NW winds 5 to 10 kt.
.TUE...N winds 5 to 10 kt.
.TUE NIGHT...W winds 5 kt.
.WED...W winds 5 to 10 kt.
.WED NIGHT...S 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 59 degrees.

$$

AMZ350-151715-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1238 AM EDT Sat Mar 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
MONDAY AFTERNOON...

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail:
SE 2 ft at 4 seconds and E 1 foot at 9 seconds. Patchy fog. Vsby
1 NM or less.
.SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 5 seconds and
E 1 foot at 9 seconds. Patchy fog in the morning. Isolated
showers in the afternoon. Vsby 1 NM or less in the morning.
.SAT NIGHT...SE winds 15 to 20 kt, becoming S 20 to 25 kt after
midnight. Seas 4 to 6 ft, building to 6 to 8 ft after midnight.
Wave Detail: SE 4 ft at 6 seconds and E 1 foot at 9 seconds,
becoming S 7 ft at 7 seconds and E 1 foot at 9 seconds. A slight
chance of showers after midnight.
.SUN...S winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft.
Wave Detail: S 9 ft at 8 seconds. A chance of showers in the
morning, then showers with a chance of tstms in the afternoon.
.SUN NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
8 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: S 8 ft
at 8 seconds, becoming S 7 ft at 8 seconds. A chance of tstms.
Showers.
.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: S 6 ft at
8 seconds, becoming S 5 ft at 8 seconds. A chance of showers in
the morning.
.MON NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-151715-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1238 AM EDT Sat Mar 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE
SUNDAY NIGHT...

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail:
SE 1 foot at 4 seconds and E 1 foot at 8 seconds. Areas of dense
fog. Vsby 1 NM or less.
.SAT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 5 seconds and E 1 foot at 9 seconds. Areas of fog in the
morning. Isolated showers in the afternoon. Vsby 1 NM or less in
the morning.
.SAT NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
6 ft, building to 6 to 8 ft after midnight. Wave Detail: SE 4 ft
at 6 seconds and E 1 foot at 9 seconds, becoming SE 6 ft at
7 seconds and E 1 foot at 9 seconds. A slight chance of showers
after midnight.
.SUN...S winds 20 to 25 kt. Seas 6 to 8 ft. Wave Detail: S 8 ft
at 8 seconds. A chance of tstms. A chance of showers in the
morning, then showers in the afternoon.
.SUN NIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft, subsiding to
4 to 6 ft after midnight. Wave Detail: SE 7 ft at 8 seconds,
becoming SE 6 ft at 8 seconds. A chance of tstms. Showers.
.MON...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the
afternoon. Wave Detail: SE 5 ft at 8 seconds, becoming SE 4 ft at
8 seconds and NW 2 ft at 3 seconds. A chance of showers in the
morning.
.MON NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE...N winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.WED...W winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-151715-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1238 AM EDT Sat Mar 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
SUNDAY EVENING...

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail:
SE 1 foot at 3 seconds and E 1 foot at 8 seconds. Areas of dense
fog. Vsby 1 NM or less.
.SAT...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 5 seconds and E 1 foot at 9 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.SAT NIGHT...SE winds 15 to 20 kt, becoming S 20 to 25 kt after
midnight. Seas 4 to 5 ft, building to 5 to 7 ft after midnight.
Wave Detail: SE 4 ft at 5 seconds and E 1 foot at 9 seconds,
becoming SE 6 ft at 6 seconds and E 1 foot at 9 seconds.
.SUN...S winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 7 ft, building to 6 to 8 ft in the
afternoon. Wave Detail: SE 7 ft at 7 seconds, becoming SE 7 ft at
8 seconds. A chance of tstms. A chance of showers in the morning,
then showers in the afternoon.
.SUN NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 4 to 6 ft,
subsiding to 4 to 5 ft after midnight. Wave Detail: SE 6 ft at
8 seconds, becoming SE 5 ft at 8 seconds. Showers with a chance
of tstms in the evening, then a chance of showers after midnight.
.MON...NW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds and W 3 ft at 3 seconds. A slight chance of showers
in the morning.
.MON NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft.
.TUE...N winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.WED...W winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...S winds 10 kt. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-151715-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1238 AM EDT Sat Mar 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
MONDAY EVENING...

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail:
SE 2 ft at 4 seconds and E 2 ft at 9 seconds. Patchy fog. Vsby
1 NM or less.
.SAT...SE winds 10 to 15 kt. Seas 2 to 3 ft, building to 3 to
4 ft in the afternoon. Wave Detail: SE 3 ft at 5 seconds and E
2 ft at 9 seconds, becoming SE 4 ft at 5 seconds and E 2 ft at
9 seconds.
.SAT NIGHT...SE winds 15 to 20 kt, becoming S 20 to 25 kt after
midnight. Seas 5 to 7 ft, building to 7 to 9 ft after midnight.
Wave Detail: SE 6 ft at 6 seconds and E 1 foot at 9 seconds,
becoming SE 8 ft at 9 seconds and SE 6 ft at 6 seconds.
.SUN...S winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft,
building to 8 to 10 ft in the afternoon. Wave Detail: SE 9 ft at
7 seconds, becoming SE 9 ft at 8 seconds. A chance of showers in
the morning, then showers with a chance of tstms in the
afternoon.
.SUN NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 7 to
9 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: SE 8 ft
at 8 seconds, becoming SE 7 ft at 8 seconds. A chance of tstms.
Showers.
.MON...NW winds 15 to 20 kt with gusts to 25 kt. Seas 5 ft, then
4 to 6 ft in the afternoon. Wave Detail: SE 5 ft at 8 seconds and
W 4 ft at 4 seconds, then Wave Detail: NW 4 ft at 5 seconds and
SE 4 ft at 8 seconds. A chance of showers in the morning.
.MON NIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Seas 4 to
5 ft, subsiding to 3 to 4 ft after midnight.
.TUE...N winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft.
.WED...NW winds 5 to 10 kt. Seas 3 to 4 ft.
.WED NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$