FZUS52 KCHS 210656
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
256 AM EDT Sat Jun 21 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
AMZ300-211915-
256 AM EDT Sat Jun 21 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A weakening cold front will dissipate north of the area through
the weekend. Strong high pressure will set up across the
Southeast and remain in place through next week.
$$
AMZ330-211915-
Charleston Harbor-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 5 kt, increasing to 10 to 15 kt this afternoon.
A slight chance of showers and tstms this afternoon.
.TONIGHT...S winds 5 to 10 kt, diminishing to 5 kt after
midnight.
.SUN...SW winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts to
20 kt in the afternoon. A slight chance of showers and tstms.
.SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to
20 kt in the afternoon.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming SW
5 to 10 kt after midnight.
.TUE...SW winds 10 to 15 kt.
.TUE NIGHT...SW winds 10 to 15 kt.
.WED...SW winds 10 to 15 kt.
.WED NIGHT...SW winds 10 to 15 kt.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 83 degrees.
$$
AMZ350-211915-
Waters from South Santee River to Edisto Beach SC out 20 NM-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 8
seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.SUN...SW winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: SE 2 ft at 8 seconds. A slight chance of showers and
tstms.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...W winds 5 kt, becoming S in the afternoon. Seas 2 ft. Wave
Detail: SE 2 ft at 8 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...SW winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...SW winds 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ352-211915-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 8
seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.SUN...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...S winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: SE 2 ft at 8 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...SW winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ354-211915-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt, becoming SE late. Seas 2 ft. Wave Detail:
SE 2 ft at 8 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.SUN...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...S winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ374-211915-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8
seconds. A slight chance of showers and tstms late this morning.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A chance of showers and tstms after midnight.
.SUN...S winds 5 kt, becoming E in the afternoon. Seas 2 to 3 ft.
Wave Detail: SE 2 ft at 8 seconds. A slight chance of showers and
tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...E winds 5 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms in the morning.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...W winds 5 kt. Seas 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 kt. Seas 2 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
256 AM EDT Sat Jun 21 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
AMZ300-211915-
256 AM EDT Sat Jun 21 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A weakening cold front will dissipate north of the area through
the weekend. Strong high pressure will set up across the
Southeast and remain in place through next week.
$$
AMZ330-211915-
Charleston Harbor-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 5 kt, increasing to 10 to 15 kt this afternoon.
A slight chance of showers and tstms this afternoon.
.TONIGHT...S winds 5 to 10 kt, diminishing to 5 kt after
midnight.
.SUN...SW winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts to
20 kt in the afternoon. A slight chance of showers and tstms.
.SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to
20 kt in the afternoon.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming SW
5 to 10 kt after midnight.
.TUE...SW winds 10 to 15 kt.
.TUE NIGHT...SW winds 10 to 15 kt.
.WED...SW winds 10 to 15 kt.
.WED NIGHT...SW winds 10 to 15 kt.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 83 degrees.
$$
AMZ350-211915-
Waters from South Santee River to Edisto Beach SC out 20 NM-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 8
seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.SUN...SW winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: SE 2 ft at 8 seconds. A slight chance of showers and
tstms.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...W winds 5 kt, becoming S in the afternoon. Seas 2 ft. Wave
Detail: SE 2 ft at 8 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...SW winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...SW winds 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ352-211915-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 8
seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.SUN...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...S winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: SE 2 ft at 8 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...SW winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ354-211915-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt, becoming SE late. Seas 2 ft. Wave Detail:
SE 2 ft at 8 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.SUN...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...S winds 5 to 10 kt. Seas 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 to 10 kt. Seas 2 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ374-211915-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
256 AM EDT Sat Jun 21 2025
.TODAY...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8
seconds. A slight chance of showers and tstms late this morning.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A chance of showers and tstms after midnight.
.SUN...S winds 5 kt, becoming E in the afternoon. Seas 2 to 3 ft.
Wave Detail: SE 2 ft at 8 seconds. A slight chance of showers and
tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.MON...E winds 5 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A slight chance of showers and tstms in the morning.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 8 seconds.
.TUE...W winds 5 kt. Seas 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.WED...SW winds 5 kt. Seas 2 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$