FZUS52 KCHS 211649
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
1249 PM EDT Wed May 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
AMZ300-220515-
1249 PM EDT Wed May 21 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will arrive today and push offshore early evening,
followed by high pressure through the weekend.
$$
AMZ330-220515-
Charleston Harbor-
1249 PM EDT Wed May 21 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
.THIS AFTERNOON...W winds 15 kt with gusts to 25 kt. A slight
chance of showers and tstms.
.TONIGHT...NW winds 10 to 15 kt with gusts to 30 kt.
.THU...NW winds 10 kt, becoming W in the afternoon.
.THU NIGHT...W winds 10 to 15 kt.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight.
.SAT...NE winds 5 to 10 kt.
.SAT NIGHT...SE winds 5 kt.
.SUN...S winds 5 to 10 kt.
.SUN NIGHT...S winds 10 kt. A slight chance of showers.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 78 degrees.
$$
AMZ350-220515-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1249 PM EDT Wed May 21 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt. Seas
4 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 2 ft at
9 seconds. A slight chance of showers.
.TONIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Gusts to 30 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft
after midnight. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at
9 seconds, becoming W 3 ft at 6 seconds and SE 1 foot at
9 seconds.
.THU...NW winds 10 to 15 kt, becoming SW in the afternoon. Gusts
to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE
1 foot at 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A slight chance
of showers and tstms after midnight.
.FRI...NW winds 10 kt, becoming W in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...W winds 10 to 15 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 10 to 15 kt. Seas 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.
Winds and seas higher in and near tstms.
$$
AMZ352-220515-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1249 PM EDT Wed May 21 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at
9 seconds. A slight chance of showers and tstms.
.TONIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts
to 25 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight.
Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds,
becoming W 3 ft at 5 seconds and SE 1 foot at 9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 25 kt, becoming SW in
the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds
and SE 1 foot at 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI...NW winds 10 kt, becoming SW in the afternoon. Seas 2 to
3 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...W winds 10 kt, becoming N after midnight. Seas 2 ft.
Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 10 to 15 kt. Seas 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.
Winds and seas higher in and near tstms.
$$
AMZ354-220515-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1249 PM EDT Wed May 21 2025
.THIS AFTERNOON...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A slight
chance of showers and tstms.
.TONIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE
1 foot at 9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 25 kt, becoming SW 5 to
10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at
3 seconds and SE 1 foot at 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI...W winds 10 kt, becoming SW in the afternoon. Seas 2 ft.
Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...SW winds 10 kt, becoming NW after midnight. Seas
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 10 to 15 kt. Seas 2 ft.
.SUN NIGHT...S winds 15 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ374-220515-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1249 PM EDT Wed May 21 2025
.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
9 seconds. A slight chance of showers and tstms.
.TONIGHT...W winds 15 to 20 kt, becoming NW after midnight. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 25 kt, becoming SW 5 to
10 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in
the afternoon. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at
9 seconds, becoming NW 2 ft at 4 seconds and SE 2 ft at
9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 4 seconds and SE 2 ft at 9 seconds.
.FRI...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and
SE 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
9 seconds.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...S winds 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.
Winds and seas higher in and near tstms.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
1249 PM EDT Wed May 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
AMZ300-220515-
1249 PM EDT Wed May 21 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will arrive today and push offshore early evening,
followed by high pressure through the weekend.
$$
AMZ330-220515-
Charleston Harbor-
1249 PM EDT Wed May 21 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
.THIS AFTERNOON...W winds 15 kt with gusts to 25 kt. A slight
chance of showers and tstms.
.TONIGHT...NW winds 10 to 15 kt with gusts to 30 kt.
.THU...NW winds 10 kt, becoming W in the afternoon.
.THU NIGHT...W winds 10 to 15 kt.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon.
.FRI NIGHT...W winds 5 to 10 kt, becoming N after midnight.
.SAT...NE winds 5 to 10 kt.
.SAT NIGHT...SE winds 5 kt.
.SUN...S winds 5 to 10 kt.
.SUN NIGHT...S winds 10 kt. A slight chance of showers.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 78 degrees.
$$
AMZ350-220515-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1249 PM EDT Wed May 21 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt. Seas
4 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 2 ft at
9 seconds. A slight chance of showers.
.TONIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Gusts to 30 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft
after midnight. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at
9 seconds, becoming W 3 ft at 6 seconds and SE 1 foot at
9 seconds.
.THU...NW winds 10 to 15 kt, becoming SW in the afternoon. Gusts
to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE
1 foot at 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A slight chance
of showers and tstms after midnight.
.FRI...NW winds 10 kt, becoming W in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...W winds 10 to 15 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 10 to 15 kt. Seas 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.
Winds and seas higher in and near tstms.
$$
AMZ352-220515-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1249 PM EDT Wed May 21 2025
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...
.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at
9 seconds. A slight chance of showers and tstms.
.TONIGHT...W winds 10 to 15 kt, becoming NW after midnight. Gusts
to 25 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight.
Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds,
becoming W 3 ft at 5 seconds and SE 1 foot at 9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 25 kt, becoming SW in
the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds
and SE 1 foot at 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI...NW winds 10 kt, becoming SW in the afternoon. Seas 2 to
3 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...W winds 10 kt, becoming N after midnight. Seas 2 ft.
Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 10 to 15 kt. Seas 2 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.
Winds and seas higher in and near tstms.
$$
AMZ354-220515-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1249 PM EDT Wed May 21 2025
.THIS AFTERNOON...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A slight
chance of showers and tstms.
.TONIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and SE
1 foot at 9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 25 kt, becoming SW 5 to
10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at
3 seconds and SE 1 foot at 9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI...W winds 10 kt, becoming SW in the afternoon. Seas 2 ft.
Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...SW winds 10 kt, becoming NW after midnight. Seas
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 10 to 15 kt. Seas 2 ft.
.SUN NIGHT...S winds 15 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ374-220515-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1249 PM EDT Wed May 21 2025
.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
9 seconds. A slight chance of showers and tstms.
.TONIGHT...W winds 15 to 20 kt, becoming NW after midnight. Seas
3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at
9 seconds.
.THU...NW winds 10 to 15 kt with gusts to 25 kt, becoming SW 5 to
10 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in
the afternoon. Wave Detail: NW 3 ft at 4 seconds and SE 2 ft at
9 seconds, becoming NW 2 ft at 4 seconds and SE 2 ft at
9 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 4 seconds and SE 2 ft at 9 seconds.
.FRI...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and
SE 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at
9 seconds.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...S winds 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers.
Winds and seas higher in and near tstms.
$$