Callawassie Island, SC - South, Colleton River Coastal Forecast

FZUS52 KCHS 230455
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1255 AM EDT Wed Apr 23 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

AMZ300-231730-
1255 AM EDT Wed Apr 23 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will slowly approach the region tonight, then become
stationary over or near the area Wednesday into Thursday. A cold
front will move through Saturday night or Sunday, with high
pressure to build from the north early next week.

$$

AMZ330-231730-
Charleston Harbor-
1255 AM EDT Wed Apr 23 2025

.REST OF TONIGHT...SW winds 5 to 10 kt.
.WED...SW winds 5 to 10 kt, becoming S in the afternoon. A chance
of showers and tstms in the afternoon.
.WED NIGHT...E winds 5 kt. A slight chance of tstms. A chance of
showers, mainly in the evening.
.THU...E winds 5 kt, increasing to 10 kt in the afternoon. A
chance of showers and tstms.
.THU NIGHT...E winds 5 to 10 kt. A chance of showers and tstms in
the evening.
.FRI...E winds 5 to 10 kt.
.FRI NIGHT...S winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt. A chance of showers and tstms.
.SAT NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms.
.SUN...NE winds 10 to 15 kt. A slight chance of showers and
tstms.
.SUN NIGHT...NE 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 72 degrees.

$$

AMZ350-231730-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1255 AM EDT Wed Apr 23 2025

.REST OF TONIGHT...SW winds 5 to 10 kt, becoming W late. Seas 2
to 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.WED...SW winds 5 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 9 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds and S 1 foot at 5 seconds. A slight chance of showers
and tstms after midnight.
.THU...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds and S 1 foot at 5 seconds. A slight chance of showers
and tstms.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 9 seconds and S 1 foot at 5 seconds. A slight chance of
showers and tstms in the evening.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and S 1 foot at 5 seconds.
.FRI NIGHT...S winds 5 to 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...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN...NE winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of
showers and tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-231730-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1255 AM EDT Wed Apr 23 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds.
.WED...S winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
8 seconds and SW 1 foot at 4 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 9 seconds.
.THU...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds and SE 1 foot at 5 seconds. A slight chance of showers
and tstms.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 8 seconds and SE 1 foot at 5 seconds. A slight chance of
showers and tstms in the evening.
.FRI...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
9 seconds and SE 1 foot at 5 seconds.
.FRI NIGHT...S winds 5 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...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of
showers and tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-231730-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1255 AM EDT Wed Apr 23 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds.
.WED...S winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at
4 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft
at 9 seconds.
.THU...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds and SE 1 foot at 4 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 8 seconds and SE 1 foot at 5 seconds.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 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.
.SUN...N winds 10 kt. Seas 3 to 4 ft. A slight chance of showers
and tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-231730-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1255 AM EDT Wed Apr 23 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE
3 ft at 8 seconds and S 2 ft at 4 seconds.
.WED...SW winds 5 kt, becoming SE in the afternoon. Seas 2 to
3 ft. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at 5 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.THU...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
8 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft
at 8 seconds.
.FRI...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT...SW winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...SW winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers and tstms.
.SUN...N winds 10 kt. Seas 4 to 6 ft. A slight chance of showers
and tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$