500
FZUS52 KCHS 121453
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
953 AM EST Wed Feb 12 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

AMZ300-130315-
953 AM EST Wed Feb 12 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A warm front will lift just north of the area on today ahead of
an approaching cold front that will impact the area Thursday.
This boundary is expected to stall just south of the region on
Friday, lifting back north as a warm front Friday night into
Saturday, with a stronger cold front impacting the area on
Sunday.

$$

AMZ330-130315-
Charleston Harbor-
953 AM EST Wed Feb 12 2025

.REST OF TODAY...S winds 5 kt, increasing to 10 kt late.
.TONIGHT...S winds 10 to 15 kt.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. A slight chance
of tstms. Showers.
.THU NIGHT...W winds 10 kt, becoming N with gusts to 20 kt after
midnight. A slight chance of showers in the evening.
.FRI...NE winds 15 kt with gusts to 20 kt.
.FRI NIGHT...NE winds 10 to 15 kt.
.SAT...SE winds 10 to 15 kt. A chance of showers.
.SAT NIGHT...S winds 15 to 20 kt. Waves 1 to 2 ft. A chance of
showers.
.SUN...SW winds 20 to 25 kt. Waves 2 to 3 ft. Showers with a
slight chance of tstms.
.SUN NIGHT...NW winds 15 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 54 degrees.

$$

AMZ350-130315-
Waters from South Santee River to Edisto Beach SC out 20 NM-
953 AM EST Wed Feb 12 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EST TODAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.REST OF TODAY...W winds 5 kt, becoming S this afternoon. Seas
3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds. Areas of dense fog
late this morning, then patchy fog this afternoon.
.TONIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Wave Detail: E 3 ft at 7 seconds, becoming S 5 ft at 6 seconds
and E 2 ft at 9 seconds.
.THU...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft.
Wave Detail: S 6 ft at 7 seconds. A chance of showers in the
morning, then showers with a slight chance of tstms in the
afternoon.
.THU NIGHT...W winds 10 to 15 kt, becoming N 20 to 25 kt with
gusts to 30 kt after midnight. Seas 4 to 5 ft. Wave Detail: S
5 ft at 7 seconds and N 3 ft at 3 seconds. A chance of showers in
the evening.
.FRI...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 4 to 6 ft, building to 5 to 6 ft in the
afternoon. Wave Detail: NE 5 ft at 5 seconds and S 2 ft at
7 seconds, becoming NE 6 ft at 6 seconds and SE 2 ft at
10 seconds.
.FRI NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: E 6 ft at 8 seconds, becoming E 5 ft at 9 seconds.
.SAT...SE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.SAT NIGHT...S winds 20 to 25 kt. Seas 5 to 7 ft. A chance of
showers.
.SUN...SW winds 25 to 30 kt. Seas 7 to 9 ft. Showers with a
slight chance of tstms.
.SUN NIGHT...W winds 20 to 25 kt. Seas 5 to 7 ft. A slight chance
of showers.

Winds and seas higher in and near tstms.

$$

AMZ352-130315-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
953 AM EST Wed Feb 12 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EST TODAY...

.REST OF TODAY...S winds 10 kt. Seas 2 to 3 ft, building to 3 to
4 ft this afternoon. Wave Detail: SE 2 ft at 8 seconds. Areas of
dense fog late this morning, then patchy fog this afternoon.
.TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft, building to 4 to
5 ft after midnight. Wave Detail: S 3 ft at 6 seconds and SE 3 ft
at 9 seconds, becoming S 4 ft at 6 seconds and E 2 ft at
9 seconds.
.THU...SW winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and E 2 ft at 9 seconds. A chance of showers in the
morning, then showers with a slight chance of tstms in the
afternoon.
.THU NIGHT...W winds 10 kt, becoming N 15 to 20 kt with gusts to
25 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
7 seconds and N 3 ft at 3 seconds. A chance of showers in the
evening.
.FRI...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft.
Wave Detail: SE 6 ft at 8 seconds and NE 5 ft at 5 seconds.
.FRI NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: E 6 ft at 8 seconds, becoming E 5 ft at 8 seconds. A
slight chance of showers after midnight.
.SAT...SE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.SAT NIGHT...S winds 20 to 25 kt. Seas 4 to 6 ft. A chance of
showers.
.SUN...SW winds 20 to 25 kt. Seas 5 to 7 ft. Showers with a
slight chance of tstms.
.SUN NIGHT...NW winds 20 to 25 kt. Seas 4 to 6 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$

AMZ354-130315-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
953 AM EST Wed Feb 12 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EST TODAY...

.REST OF TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt
late. Seas 2 to 3 ft, building to 3 to 4 ft this afternoon. Wave
Detail: E 3 ft at 8 seconds and SE 2 ft at 9 seconds, becoming E
3 ft at 8 seconds and SE 3 ft at 9 seconds. Areas of dense fog
late this morning, then patchy fog this afternoon.
.TONIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 6 seconds and SE 3 ft at 9 seconds.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 4 ft at 6 seconds and E 2 ft at 9 seconds. A
chance of showers in the morning, then showers with a slight
chance of tstms in the afternoon.
.THU NIGHT...NW winds 10 kt, becoming N 15 to 20 kt with gusts to
25 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after
midnight. Wave Detail: SE 3 ft at 9 seconds, becoming SE 3 ft at
9 seconds and N 2 ft at 3 seconds. A chance of showers in the
evening.
.FRI...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: NE 5 ft at
5 seconds and SE 2 ft at 9 seconds, becoming NE 6 ft at 6 seconds
and SE 2 ft at 9 seconds.
.FRI NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: E 6 ft at 7 seconds, becoming E 5 ft at 8 seconds. A
slight chance of showers after midnight.
.SAT...SE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.SAT NIGHT...S winds 15 to 20 kt. Seas 4 to 6 ft. A chance of
showers.
.SUN...SW winds 15 to 20 kt. Seas 4 to 6 ft. Showers with a
slight chance of tstms.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 4 to 5 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$

AMZ374-130315-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
953 AM EST Wed Feb 12 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL NOON EST TODAY...

.REST OF TODAY...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: NE 3 ft at 8 seconds and SE 3 ft at 9 seconds. Areas of
dense fog late this morning.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Wave Detail: S 4 ft at 5 seconds and SE 4 ft at 9 seconds.
.THU...SW winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and E 2 ft at 9 seconds. A chance of showers in the
morning, then showers with a slight chance of tstms in the
afternoon.
.THU NIGHT...NW winds 10 to 15 kt, becoming N 20 to 25 kt after
midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Wave Detail: S 4 ft at 6 seconds and SE 3 ft at 9 seconds,
becoming NW 4 ft at 4 seconds and SE 3 ft at 9 seconds. A chance
of showers in the evening.
.FRI...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft,
building to 6 to 8 ft in the afternoon. Wave Detail: NE 6 ft at
5 seconds and SE 3 ft at 9 seconds, becoming NE 7 ft at 7 seconds
and SE 2 ft at 9 seconds.
.FRI NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 6 to 7 ft, subsiding to 5 to 7 ft after midnight.
Wave Detail: NE 7 ft at 7 seconds, becoming E 6 ft at 8 seconds.
A slight chance of showers after midnight.
.SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft. A chance of showers.
.SAT NIGHT...S winds 20 to 25 kt. Seas 5 to 7 ft. A chance of
showers.
.SUN...SW winds 20 to 25 kt. Seas 7 to 9 ft. Showers with a
slight chance of tstms.
.SUN NIGHT...NW winds 20 to 25 kt. Seas 5 to 7 ft. A slight
chance of showers.

Winds and seas higher in and near tstms.

$$