FZUS52 KCHS 230939
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
539 AM EDT Thu Apr 23 2026
South Santee River SC to Altamaha Sound GA out 60 NM, including
Charleston Harbor and Grays Reef National Marine Sanctuary
AMZ300-232300-
539 AM EDT Thu Apr 23 2026
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will linger over the coastal waters through late
week. A cold front is forecast to sweep across the region
Saturday into Sunday.
$$
AMZ340-232300-
Charleston Harbor-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 kt, becoming S this afternoon. Patchy smoke.
.TONIGHT...SW winds 5 to 10 kt. Patchy smoke in the evening.
.FRI...SW winds 5 kt, increasing to 10 kt in the afternoon.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Showers likely with a slight
chance of tstms.
.SUN...NE winds 5 to 10 kt. A chance of showers.
.SUN NIGHT...E winds 5 to 10 kt. A slight chance of showers and
tstms.
.MON...E winds 10 kt. A slight chance of showers.
.MON NIGHT...SE winds 5 to 10 kt. A slight chance of showers.
Winds and waves higher in and near tstms.
$$
AMZ360-232300-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 3 seconds and E 2 ft at 8 seconds. Patchy smoke.
.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and E 2 ft at 8 seconds. Patchy smoke in the
evening.
.FRI...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 NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 foot at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 1 foot at 9 seconds. A slight chance of
showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 5 seconds and SE 1 foot at 8 seconds. Showers likely with
a slight chance of tstms.
.SUN...NE winds 10 kt. Seas 2 ft. A chance of showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.MON...E winds 15 to 20 kt. Seas 2 to 3 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ362-232300-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft.
Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 3 seconds.
Patchy smoke.
.TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds and SW 1 foot at 3 seconds.
.FRI...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 1 foot at 9 seconds. A chance of showers in
the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and SE 1 foot at 8 seconds. Showers likely with a
slight chance of tstms.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. A chance of showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft. A slight chance of
showers and tstms.
.MON...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ364-232300-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft.
Wave Detail: E 2 ft at 7 seconds. Patchy smoke.
.TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.FRI...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT...SW winds 10 kt, becoming S in the afternoon. Seas 2 ft.
Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. A
chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and SE 1 foot at 8 seconds. A slight chance of tstms
in the evening. Showers likely.
.SUN...N winds 5 to 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.SUN NIGHT...E winds 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.MON...E winds 10 to 15 kt. Seas 2 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 2 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ380-232300-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft at
4 seconds and E 2 ft at 8 seconds. Patchy smoke.
.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft
at 4 seconds and E 2 ft at 8 seconds. Patchy smoke in the
evening.
.FRI...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at
4 seconds and E 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW
3 ft at 4 seconds and E 2 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at
5 seconds and E 1 foot at 9 seconds. A slight chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds.
Showers likely with a chance of tstms.
.SUN...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.
.MON...NE winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ382-232300-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds and SW 1 foot at 3 seconds. Patchy smoke until late
afternoon.
.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 3 seconds and SE 2 ft at 8 seconds.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 4 seconds and SE 2 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at
8 seconds. Showers likely with a chance of tstms.
.SUN...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.MON...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ384-232300-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds. Patchy smoke this morning.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 1 foot at 4 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 4 seconds and SE 3 ft at 8 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 9 seconds. A slight chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds.
Showers likely. A chance of tstms, mainly in the evening.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 ft. A chance of showers
with a slight chance of tstms.
.MON...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.MON NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
539 AM EDT Thu Apr 23 2026
South Santee River SC to Altamaha Sound GA out 60 NM, including
Charleston Harbor and Grays Reef National Marine Sanctuary
AMZ300-232300-
539 AM EDT Thu Apr 23 2026
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will linger over the coastal waters through late
week. A cold front is forecast to sweep across the region
Saturday into Sunday.
$$
AMZ340-232300-
Charleston Harbor-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 kt, becoming S this afternoon. Patchy smoke.
.TONIGHT...SW winds 5 to 10 kt. Patchy smoke in the evening.
.FRI...SW winds 5 kt, increasing to 10 kt in the afternoon.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Showers likely with a slight
chance of tstms.
.SUN...NE winds 5 to 10 kt. A chance of showers.
.SUN NIGHT...E winds 5 to 10 kt. A slight chance of showers and
tstms.
.MON...E winds 10 kt. A slight chance of showers.
.MON NIGHT...SE winds 5 to 10 kt. A slight chance of showers.
Winds and waves higher in and near tstms.
$$
AMZ360-232300-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 3 seconds and E 2 ft at 8 seconds. Patchy smoke.
.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and E 2 ft at 8 seconds. Patchy smoke in the
evening.
.FRI...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 NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 foot at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 1 foot at 9 seconds. A slight chance of
showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 5 seconds and SE 1 foot at 8 seconds. Showers likely with
a slight chance of tstms.
.SUN...NE winds 10 kt. Seas 2 ft. A chance of showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.MON...E winds 15 to 20 kt. Seas 2 to 3 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ362-232300-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft.
Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 3 seconds.
Patchy smoke.
.TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds and SW 1 foot at 3 seconds.
.FRI...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 1 foot at 9 seconds. A chance of showers in
the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and SE 1 foot at 8 seconds. Showers likely with a
slight chance of tstms.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. A chance of showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft. A slight chance of
showers and tstms.
.MON...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ364-232300-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft.
Wave Detail: E 2 ft at 7 seconds. Patchy smoke.
.TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.FRI...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 8 seconds.
.SAT...SW winds 10 kt, becoming S in the afternoon. Seas 2 ft.
Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. A
chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 4 seconds and SE 1 foot at 8 seconds. A slight chance of tstms
in the evening. Showers likely.
.SUN...N winds 5 to 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.SUN NIGHT...E winds 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.MON...E winds 10 to 15 kt. Seas 2 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 2 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ380-232300-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft at
4 seconds and E 2 ft at 8 seconds. Patchy smoke.
.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft
at 4 seconds and E 2 ft at 8 seconds. Patchy smoke in the
evening.
.FRI...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at
4 seconds and E 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW
3 ft at 4 seconds and E 2 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 3 ft at
5 seconds and E 1 foot at 9 seconds. A slight chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds.
Showers likely with a chance of tstms.
.SUN...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers with a slight chance of tstms.
.MON...NE winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ382-232300-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds and SW 1 foot at 3 seconds. Patchy smoke until late
afternoon.
.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 3 seconds and SE 2 ft at 8 seconds.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 4 seconds and SE 2 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at
8 seconds. Showers likely with a chance of tstms.
.SUN...N winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.MON...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers.
.MON NIGHT...SE winds 10 kt. Seas 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$
AMZ384-232300-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
539 AM EDT Thu Apr 23 2026
.TODAY...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds. Patchy smoke this morning.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 1 foot at 4 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 4 seconds and SE 3 ft at 8 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 9 seconds. A slight chance of showers
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds.
Showers likely. A chance of tstms, mainly in the evening.
.SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 ft. A chance of showers
with a slight chance of tstms.
.MON...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.MON NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
Winds and seas higher in and near tstms.
$$