618
FZUS52 KCHS 191700
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1200 PM EST Sun Jan 19 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

AMZ300-200515-
1200 PM EST Sun Jan 19 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will move offshore this morning, followed by arctic
High pressure into Monday night. A storm system originating in
the Gulf of Mexico will move up the Southeast coast Tuesday
through Tuesday night, bringing impactful weather. Another weaker
storm system could move up the coast Thursday night into Friday.

$$

AMZ330-200515-
Charleston Harbor-
1200 PM EST Sun Jan 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt,
becoming W. Waves 1 to 2 ft. A chance of rain early.
.TONIGHT...W winds 15 to 20 kt with gusts to 25 kt, becoming NW 20
kt with gusts to 30 kt. Waves 1 to 2 ft, building to 2 ft.
.MON...N winds 10 to 15 kt.
.MON NIGHT...NE winds 10 to 15 kt.
.TUE...NE winds 15 kt with gusts to 20 kt. A slight chance of
snow in the morning, then a chance of rain in the afternoon.
.TUE NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 to
2 ft. Sleet in the evening, then snow after midnight.
.WED...N winds 15 to 20 kt. Waves 1 to 2 ft. A slight chance of
snow.
.WED NIGHT...NE winds 15 kt. A slight chance of freezing rain.
.THU...N winds 10 to 15 kt. A chance of showers.
.THU NIGHT...N winds 10 to 15 kt. A chance of showers.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 50 degrees.

$$

AMZ350-200515-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1200 PM EST Sun Jan 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 30 kt,
becoming W 20 kt with gusts to 30 kt. Seas 3 to 5 ft. Wave
Detail: S 5 ft at 8 seconds. A slight chance of rain late.
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
6 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: S 5 ft
at 7 seconds and W 4 ft at 4 seconds, becoming NW 4 ft at
5 seconds and S 4 ft at 8 seconds.
.MON...N winds 15 to 20 kt with gusts to 25 kt, diminishing to
10 to 15 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: NW 4 ft at 4 seconds and SE
2 ft at 8 seconds, becoming N 2 ft at 4 seconds and SE 1 foot at
8 seconds.
.MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight.
Wave Detail: NE 2 ft at 4 seconds and W 1 foot at 4 seconds,
becoming NE 3 ft at 4 seconds and SE 1 foot at 8 seconds. A
slight chance of showers after midnight.
.TUE...NE winds 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave
Detail: E 5 ft at 7 seconds. A slight chance of snow in the
morning. A chance of rain.
.TUE NIGHT...N winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. Seas 4 to 5 ft, building to 4 to 6 ft after midnight.
Wave Detail: E 5 ft at 7 seconds, becoming NE 5 ft at 6 seconds.
Rain in the evening, then snow and sleet after midnight.
.WED...N winds 25 to 30 kt. Seas 5 to 7 ft. A chance of rain with
a slight chance of snow.
.WED NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight
chance of rain.
.THU...N winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers.
.THU NIGHT...N winds 15 kt. Seas 4 to 5 ft. A chance of showers.

$$

AMZ352-200515-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1200 PM EST Sun Jan 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt,
becoming W. Seas 2 to 3 ft, building to 4 to 5 ft. Wave Detail: S
3 ft at 7 seconds, becoming S 4 ft at 7 seconds.
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
5 ft. Wave Detail: W 4 ft at 4 seconds and S 3 ft at 7 seconds.
.MON...N winds 15 to 20 kt with gusts to 25 kt, diminishing to
10 to 15 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: NW 4 ft at 4 seconds and SE
1 foot at 8 seconds, becoming N 2 ft at 4 seconds and SE 1 foot
at 8 seconds.
.MON NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts to 25 kt after midnight. Seas 2 to 3 ft. Wave Detail: N
3 ft at 4 seconds and SE 1 foot at 8 seconds. A slight chance of
showers after midnight.
.TUE...NE winds 20 to 25 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft
at 7 seconds. A slight chance of rain in the morning, then a
chance of rain in the afternoon.
.TUE NIGHT...N winds 20 to 25 kt with gusts to 35 kt. Seas 4 to
5 ft, building to 4 to 6 ft after midnight. Wave Detail: NE 5 ft
at 6 seconds, becoming NE 5 ft at 7 seconds. Sleet. Rain in the
evening, then snow after midnight.
.WED...N winds 20 to 25 kt. Seas 5 to 7 ft. A slight chance of
rain and snow.
.WED NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight
chance of rain.
.THU...N winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers.
.THU NIGHT...N winds 15 kt. Seas 4 to 5 ft. A chance of showers.

$$

AMZ354-200515-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1200 PM EST Sun Jan 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt,
becoming W. Seas 1 to 2 ft, building to 3 to 4 ft. Wave Detail: S
2 ft at 6 seconds and E 1 foot at 7 seconds, becoming SE 3 ft at
7 seconds and W 2 ft at 3 seconds.
.TONIGHT...NW winds 20 to 25 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 4 seconds and SE 2 ft at 7 seconds.
.MON...NW winds 15 to 20 kt with gusts to 25 kt, becoming N 10 to
15 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in
the afternoon. Wave Detail: NW 4 ft at 4 seconds and SE 1 foot at
8 seconds, becoming N 2 ft at 4 seconds and SE 1 foot at
8 seconds.
.MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and
SE 1 foot at 8 seconds. A slight chance of showers after
midnight.
.TUE...NE winds 20 to 25 kt with gusts to 30 kt. Seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. Wave Detail: NE 4 ft at
5 seconds and SE 1 foot at 8 seconds, becoming E 5 ft at
7 seconds. A slight chance of rain in the morning, then a chance
of rain in the afternoon.
.TUE NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
6 ft. Wave Detail: NE 6 ft at 7 seconds. Rain. Sleet after
midnight.
.WED...N winds 20 to 25 kt. Seas 5 to 6 ft. A slight chance of
rain.
.WED NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight
chance of rain.
.THU...N winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers.
.THU NIGHT...N winds 15 kt. Seas 4 to 5 ft. A chance of showers.

$$

AMZ374-200515-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1200 PM EST Sun Jan 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.THIS AFTERNOON...SW winds 15 to 20 kt with gusts to 25 kt,
becoming W 20 to 25 kt late. Seas 3 to 4 ft, building to 4 to
5 ft. Wave Detail:
S 4 ft at 7 seconds and NE 1 foot at 7 seconds, becoming W 4 ft
at 4 seconds and S 4 ft at 7 seconds. A slight chance of rain
early.
.TONIGHT...NW winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 5 seconds and E 3 ft at 7 seconds.
.MON...NW winds 15 to 20 kt with gusts to 25 kt, becoming N 15 to
20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon.
Wave Detail: NW 5 ft at 5 seconds and SE 1 foot at 8 seconds,
becoming NW 4 ft at 5 seconds and SE 1 foot at 8 seconds.
.MON NIGHT...NE winds 15 to 20 kt. Seas 2 to 3 ft, building to 3
to 4 ft after midnight. Wave Detail: N 3 ft at 4 seconds and SE 1
foot at 8 seconds, becoming NE 4 ft at 4 seconds and SE 1 foot at
8 seconds. A chance of showers after midnight.
.TUE...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 5 ft,
building to 5 to 7 ft in the afternoon. Wave Detail: E 5 ft at
6 seconds, becoming E 6 ft at 7 seconds. A chance of rain in the
morning, then rain likely in the afternoon.
.TUE NIGHT...N winds 25 to 30 kt. Seas 6 to 8 ft, building to
7 to 9 ft after midnight. Wave Detail: NE 8 ft at 7 seconds.
Rain.
.WED...N winds 25 to 30 kt. Seas 7 to 9 ft. A chance of rain.
.WED NIGHT...NE winds 15 to 20 kt. Seas 7 to 9 ft. A chance of
rain.
.THU...N winds 15 to 20 kt. Seas 6 to 8 ft. A chance of showers.
.THU NIGHT...N winds 15 to 20 kt. Seas 5 to 6 ft. A chance of
showers.

$$