National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Coastal Waters Forecast
Issued by NWS Charleston, SC

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FZUS52 KCHS 210434
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1234 AM EDT Tue May 21 2024

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

AMZ300-211715-
1234 AM EDT Tue May 21 2024

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will persist for most of this week. A series of
upper level disturbances should impact our area this weekend.

$$

AMZ330-211715-
Charleston Harbor-
1234 AM EDT Tue May 21 2024

.REST OF TONIGHT...NE winds 5 to 10 kt.
.TUE...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the
afternoon.
.TUE NIGHT...E winds 5 to 10 kt in the evening, becoming light
and variable.
.WED...NE winds 5 kt, becoming E in the afternoon.
.WED NIGHT...SE winds 5 to 10 kt, becoming S after midnight.
.THU...SW winds 5 to 10 kt.
.THU NIGHT...S winds 5 to 10 kt.
.FRI...SW winds 10 to 15 kt.
.FRI NIGHT...S winds 10 to 15 kt. A slight chance of showers and
tstms.
.SAT...SW winds 10 to 15 kt. A slight chance of showers and
tstms.
.SAT NIGHT...SW winds 10 to 15 kt. A slight 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 75 degrees.

$$

AMZ350-211715-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1234 AM EDT Tue May 21 2024

.REST OF TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 8 seconds.
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds and SE 1 foot at 10 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds and SE 1 foot at 10 seconds.
.WED...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
7 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...S winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
9 seconds.
.THU NIGHT...S winds 10 kt. Seas 2 ft.
.FRI...SW winds 10 kt. Seas 2 ft.
.FRI NIGHT...S winds 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SAT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of showers
and tstms.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers and
tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-211715-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1234 AM EDT Tue May 21 2024

.REST OF TONIGHT...NE winds 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds.
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds and SE 1 foot at 10 seconds.
.WED...NE winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at 7 seconds
and SE 1 foot at 10 seconds.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...S winds 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SAT...SW winds 10 kt. Seas 2 ft. A slight chance of showers and
tstms.
.SAT NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-211715-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1234 AM EDT Tue May 21 2024

.REST OF TONIGHT...NE winds 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds.
.TUE...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: E 4 ft at 7 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds.
.WED...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
7 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds.
.THU NIGHT...S winds 10 kt. Seas 2 to 3 ft.
.FRI...S winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...S winds 10 kt. Seas 2 ft.
.SAT...SW winds 10 kt. Seas 2 ft. A slight chance of showers and
tstms.
.SAT NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-211715-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1234 AM EDT Tue May 21 2024

.REST OF TONIGHT...NE winds 15 kt with gusts to 20 kt. Seas 4 to
5 ft. Wave Detail: NE 5 ft at 7 seconds.
.TUE...NE winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Wave Detail: NE 5 ft at 8 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 7 seconds. A slight chance of showers after midnight.
.WED...NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
7 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
8 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...S winds 10 kt. Seas 2 to 3 ft.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...S winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$