636
FZUS52 KCHS 260921
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
521 AM EDT Thu Sep 26 2024

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

AMZ300-262230-
521 AM EDT Thu Sep 26 2024

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Hurricane Helene is forecast to move inland across portions of
Florida and Georgia later today into Friday. Multiple impacts are
expected across our area today and tonight. Drier weather then
arrives later Friday and persists into next week. Refer to the
latest advisory on Helene issued by the National Hurricane
Center.

$$

AMZ330-262230-
Charleston Harbor-
521 AM EDT Thu Sep 26 2024

...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...SE winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts to 25 kt this afternoon. Waves 1 to 2 ft. A slight chance
of tstms. A chance of showers early this morning, then showers
late this morning.
.TONIGHT...Tropical storm conditions possible. SE winds 20 to
25 kt with gusts to 35 kt, increasing to 25 to 30 kt with gusts
to 45 kt after midnight. Waves 2 to 4 ft. Showers with a slight
chance of tstms.
.FRI...Tropical storm conditions possible. S winds 25 to 30 kt
with gusts to 45 kt, diminishing to 15 to 20 kt with gusts to
30 kt in the afternoon. Waves 2 to 4 ft. A slight chance of
tstms.
.FRI NIGHT...SW winds 10 to 15 kt.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...SW winds 5 to 10 kt.
.SUN...SW winds 5 to 10 kt. A slight chance of showers and tstms
in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms.
.MON...W winds 5 to 10 kt. A slight chance of showers and tstms.
.MON NIGHT...W winds 5 to 10 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 81 degrees.

$$

AMZ350-262230-
Waters from South Santee River to Edisto Beach SC out 20 NM-
521 AM EDT Thu Sep 26 2024

...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...Tropical storm conditions possible. SE winds 15 to
20 kt, increasing to 20 to 25 kt with gusts to 30 kt this
afternoon. Seas 4 to 5 ft, building to 5 to 7 ft this afternoon.
Wave Detail: SE 6 ft at 7 seconds and E 2 ft at 10 seconds. A
slight chance of tstms. A chance of showers this morning, then
showers likely this afternoon.
.TONIGHT...Tropical storm conditions expected. SE winds 25 to
30 kt, increasing to 30 to 35 kt with gusts to 45 kt after
midnight. Seas 7 to 9 ft, building to 10 to 14 ft after midnight.
Wave Detail: SE 14 ft at 9 seconds. Showers with a slight chance
of tstms.
.FRI...Tropical storm conditions expected. S winds 30 to 35 kt
with gusts to 45 kt, diminishing to 25 to 30 kt in the afternoon.
Seas 11 to 13 ft, subsiding to 9 to 11 ft in the afternoon. Wave
Detail: S 13 ft at 9 seconds. A slight chance of tstms.
.FRI NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Seas 7 to 9 ft, subsiding to 5 to 6 ft after midnight.
Wave Detail: SE 9 ft at 9 seconds. A slight chance of showers and
tstms early in the evening.
.SAT...SW winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: S 5 ft at 7 seconds and E
2 ft at 11 seconds.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 7 seconds and E 2 ft at 11 seconds. A slight chance of
showers and tstms until early morning, then a chance of showers
and tstms late.
.SUN...SW winds 5 to 10 kt. Seas 3 ft. A slight chance of showers
and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.MON...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.MON NIGHT...W winds 10 kt. Seas 2 ft. A slight chance of showers
and tstms in the evening, then a chance of showers and tstms
after midnight.

Winds and seas higher in and near tstms.

$$

AMZ352-262230-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
521 AM EDT Thu Sep 26 2024

...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...Tropical storm conditions possible. SE winds 15 to
20 kt, increasing to 20 to 25 kt with gusts to 30 kt this
afternoon. Seas 4 to 6 ft, building to 6 to 8 ft this afternoon.
Wave Detail: SE 7 ft at 7 seconds and E 2 ft at 10 seconds. A
slight chance of tstms. Showers.
.TONIGHT...Tropical storm conditions expected. SE winds 25 to
35 kt, increasing to 35 to 40 kt with gust to 50 kt after
midnight. Seas 9 to 11 ft, building to 11 to 15 ft after midnight.
Wave Detail: SE 15 ft at 9 seconds. Showers with a slight chance
of tstms.
.FRI...Tropical storm conditions expected. S winds 25 to 35 kt.
Gusts to 50 kt in the morning. Seas 10 to 14 ft, subsiding to
8 to 10 ft in the afternoon. Wave Detail: S 14 ft at 9 seconds. A
chance of showers with a slight chance of tstms early in the
morning, then a slight chance of showers and tstms late in the
morning.
.FRI NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Seas 6 to 8 ft, subsiding to 4 to 6 ft after midnight.
Wave Detail: SE 8 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: S 4 ft at 7 seconds and E
1 foot at 11 seconds.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: S 3 ft at
7 seconds and E 2 ft at 11 seconds. A slight chance of showers
and tstms.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.MON...W winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.

Winds and seas higher in and near tstms.

$$

AMZ354-262230-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
521 AM EDT Thu Sep 26 2024

...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...Tropical storm conditions possible. SE winds 15 to 20 kt
with gusts to 25 kt, increasing to 25 to 30 kt this afternoon.
Seas 4 to 6 ft, building to 6 to 8 ft this afternoon. Wave
Detail: SE 8 ft at 7 seconds and E 2 ft at 10 seconds. Showers
with a slight chance of tstms.
.TONIGHT...Tropical storm conditions expected. SE winds 30 to
40 kt with gusts to 50 kt. Seas 9 to 13 ft, building to 11 to
15 ft after midnight. Wave Detail: SE 15 ft at 10 seconds.
Showers with a slight chance of tstms.
.FRI...Tropical storm conditions expected. S winds 25 to 35 kt
with gusts to 50 kt, diminishing to 20 to 25 kt with gusts to
30 kt in the afternoon. Seas 9 to 13 ft, subsiding to 7 to 9 ft
in the afternoon. Wave Detail: SE 13 ft at 10 seconds. A chance
of showers with a slight chance of tstms early in the morning,
then a slight chance of showers and tstms late in the morning.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to
4 to 5 ft after midnight. Wave Detail: SE 6 ft at 10 seconds and
S 4 ft at 7 seconds.
.SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 7 seconds and E 2 ft at 11 seconds.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: S 3 ft at
7 seconds and E 2 ft at 11 seconds. A slight chance of showers
and tstms.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.MON...W winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.

Winds and seas higher in and near tstms.

$$

AMZ374-262230-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
521 AM EDT Thu Sep 26 2024

...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TODAY...Tropical storm conditions possible. SE winds 20 to
25 kt, increasing to 25 to 30 kt this afternoon. Seas 5 to 7 ft,
building to 7 to 9 ft this afternoon. Wave Detail: SE 9 ft at
7 seconds and E 3 ft at 10 seconds. A slight chance of tstms.
Showers.
.TONIGHT...Tropical storm conditions expected. SE winds 30 to
40 kt with gusts to 50 kt. Seas 10 to 14 ft, building to 14 to
17 ft after midnight. Wave Detail: SE 16 ft at 9 seconds. Showers
with a slight chance of tstms.
.FRI...Tropical storm conditions expected. S winds 25 to 35 kt
with gusts to 45 kt, diminishing to 20 to 25 kt with gusts to
30 kt in the afternoon. Seas 11 to 15 ft, subsiding to 9 to 11 ft
in the afternoon. Wave Detail: S 14 ft at 9 seconds. A slight
chance of tstms. A chance of showers early in the morning, then a
slight chance of showers in the late morning and afternoon.
.FRI NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
8 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: S 6 ft
at 8 seconds and E 3 ft at 12 seconds. A slight chance of tstms
early in the evening. A slight chance of showers.
.SAT...SW winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: S 4 ft at 7 seconds and E
2 ft at 11 seconds. A slight chance of showers. A slight chance
of tstms in the late morning and afternoon.
.SAT NIGHT...SW winds 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 6 seconds and E 2 ft at 11 seconds. A chance of showers and
tstms.
.SUN...SW winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. A chance of showers and tstms early in the
morning, then a slight chance of showers and tstms in the late
morning and early afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.MON...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms early in the morning, then a slight chance of showers
and tstms in the late morning and afternoon.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$