212
FZUS52 KCHS 111400
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1000 AM EDT Tue Mar 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

AMZ300-120215-
1000 AM EDT Tue Mar 11 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will build in through Friday. A cold front could
move through late in the weekend.

$$

AMZ330-120215-
Charleston Harbor-
1000 AM EDT Tue Mar 11 2025

.REST OF TODAY...NW winds 10 to 15 kt with gusts to 20 kt,
diminishing to 5 kt late.
.TONIGHT...W winds 5 kt.
.WED...SW winds 5 to 10 kt.
.WED NIGHT...SW winds 10 kt.
.THU...SW winds 5 kt, increasing to 10 kt in the afternoon.
.THU NIGHT...S winds 10 kt, becoming SW after midnight.
.FRI...E winds 5 to 10 kt.
.FRI NIGHT...SE winds 5 to 10 kt.
.SAT...S winds 10 to 15 kt.
.SAT NIGHT...S winds 15 to 20 kt. Waves 1 to 2 ft. A slight
chance of showers.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 56 degrees.

$$

AMZ350-120215-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1000 AM EDT Tue Mar 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...NW winds 15 to 20 kt with gusts to 30 kt,
diminishing to 10 to 15 kt with gusts to 20 kt early this
afternoon, then becoming W 5 to 10 kt late. Seas 4 to 5 ft,
subsiding to 3 to 4 ft this afternoon. Wave Detail: NW 4 ft at
4 seconds and NE 4 ft at 7 seconds, becoming NE 4 ft at 7 seconds
and NW 3 ft at 4 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 9 seconds and W 1 foot at 4 seconds.
.WED...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and
SW 1 foot at 3 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 3 seconds and E 2 ft at 9 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and E 2 ft at 8 seconds.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft
at 5 seconds and E 1 foot at 8 seconds.
.FRI...NE winds 5 kt. Seas 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SAT...S winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds 20 to 25 kt. Seas 5 to 7 ft. A slight chance
of showers.

$$

AMZ352-120215-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1000 AM EDT Tue Mar 11 2025

.REST OF TODAY...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
with gusts to 20 kt early this afternoon, then becoming W 5 to 10
kt late. Seas 3 to 4 ft, subsiding to 2 to 3 ft this afternoon.
Wave Detail: NW 4 ft at 4 seconds and E 2 ft at 7 seconds,
becoming NW 3 ft at 4 seconds and E 2 ft at 7 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE
2 ft at 8 seconds and W 1 foot at 3 seconds.
.WED...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at
2 seconds.
.WED NIGHT...SW winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
3 seconds and E 2 ft at 9 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and E 2 ft at 8 seconds.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and E 1 foot at 8 seconds.
.FRI...NE winds 5 kt. Seas 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SAT...S winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 20 to 25 kt. Seas 4 to 6 ft. A slight chance
of showers.

$$

AMZ354-120215-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1000 AM EDT Tue Mar 11 2025

.REST OF TODAY...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
early this afternoon, then becoming W 5 kt late. Seas 3 to 4 ft,
subsiding to 2 to 3 ft this afternoon. Wave Detail: NW 3 ft at 4
seconds and E 2 ft at 7 seconds, becoming NW 2 ft at 4 seconds and
E 2 ft at 7 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft
at 7 seconds.
.WED...W winds 5 to 10 kt, becoming S in the afternoon. Seas
2 ft. Wave Detail: NE 2 ft at 9 seconds and S 1 foot at
2 seconds.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 3 seconds and E 2 ft at 9 seconds.
.THU...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 9 seconds.
.THU NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 4 seconds.
.FRI...NE winds 5 kt. Seas 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SAT...S winds 15 to 20 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 20 to 25 kt. Seas 4 to 6 ft. A slight chance
of showers.

$$

AMZ374-120215-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1000 AM EDT Tue Mar 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.REST OF TODAY...NW winds 20 to 25 kt with gusts to 30 kt,
becoming W 5 to 10 kt. Seas 5 to 7 ft, subsiding to 4 to 5 ft
this afternoon. Wave Detail: NW 7 ft at 6 seconds and E 2 ft at
7 seconds, becoming N 5 ft at 7 seconds and SE 1 foot at
8 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
3 ft at 8 seconds and NW 2 ft at 4 seconds.
.WED...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
3 to 4 ft. Wave Detail: NE 4 ft at 8 seconds.
.WED NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft, building to
3 to 4 ft after midnight. Wave Detail: E 3 ft at 10 seconds and S
2 ft at 3 seconds, becoming E 3 ft at 9 seconds and S 2 ft at
4 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds and S 2 ft at 4 seconds.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 8 seconds and S 1 foot at 4 seconds. A slight chance of
showers in the evening.
.FRI...N winds 5 kt. Seas 2 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT...S winds 15 to 20 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds 20 to 25 kt. Seas 5 to 7 ft.

$$