544
FZUS52 KCHS 241904
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
304 PM EDT Tue Sep 24 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

AMZ300-250815-
304 PM EDT Tue Sep 24 2024

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will linger across the region through Wednesday. A
tropical cyclone is forecast to track northward across the Gulf
of Mexico, then move inland late week across portions of Florida,
Georgia, and possibly South Carolina. Drier weather then arrives
for the weekend. Refer to the latest
advisory on PTC9 issued by the National Hurricane Center.

$$

AMZ330-250815-
Charleston Harbor-
304 PM EDT Tue Sep 24 2024

.TONIGHT...S winds 5 to 10 kt.
.WED...SE winds 5 to 10 kt.
.WED NIGHT...SE winds 10 kt. A slight chance of showers and tstms
in the late evening and early morning. A chance of showers with a
slight chance of tstms late.
.THU...SE winds 10 to 15 kt, increasing to 20 to 25 kt with gusts
to 30 kt in the afternoon. Waves 2 to 3 ft. A slight chance of
tstms. A chance of showers in the morning, then showers likely in
the afternoon.
.THU NIGHT...SE winds 25 to 30 kt. Waves 2 to 4 ft. Showers with
a slight chance of tstms. Some tstms may produce heavy rainfall.
.FRI...S winds 20 to 25 kt with gusts to 35 kt. Waves 2 to 3 ft.
Showers with a slight chance of tstms early in the morning, then
a chance of showers with a slight chance of tstms in the late
morning and early afternoon. A slight chance of showers late.
Some tstms may produce heavy rainfall early in the morning.
.FRI NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Waves 1 to 2 ft. A slight chance of showers early in
the evening.
.SAT...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon.
.SAT NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. A slight chance of showers and tstms after midnight.
.SUN...N winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts to
20 kt in the afternoon. A slight chance of showers and tstms.
.SUN NIGHT...S winds 10 to 15 kt with gusts to 20 kt, becoming NE
after midnight. A slight chance of tstms until early morning. A
slight chance of showers.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 80 degrees.

$$

AMZ350-250815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
304 PM EDT Tue Sep 24 2024

.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 11 seconds and S 2 ft at 3 seconds.
.WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 11 seconds and S 2 ft at 4 seconds.
.WED NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft
at 6 seconds and E 2 ft at 10 seconds. A slight chance of showers
and tstms in the late evening and early morning. A chance of
showers with a slight chance of tstms late.
.THU...SE winds 15 to 20 kt, increasing to 25 to 30 kt in the
afternoon. Seas 4 to 6 ft, building to 6 to 8 ft in the
afternoon. Wave Detail: SE 8 ft at 7 seconds and E 2 ft at
10 seconds. A chance of showers with a slight chance of tstms.
.THU NIGHT...SE winds 25 to 30 kt. Seas 8 to 10 ft, building to
10 to 14 ft after midnight. Wave Detail: SE 12 ft at 9 seconds.
Showers with a slight chance of tstms. Some tstms may produce
heavy rainfall.
.FRI...S winds 25 to 30 kt. Seas 9 to 13 ft, subsiding to 7 to
9 ft in the afternoon. Wave Detail: S 12 ft at 9 seconds. Showers
with a slight chance of tstms, mainly in the morning. Some tstms
may produce heavy rainfall early in the morning.
.FRI NIGHT...SW winds 15 to 20 kt with gusts to 30 kt,
diminishing to 10 to 15 kt with gusts to 20 kt after midnight.
Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight. A slight
chance of tstms. A slight chance of showers.
.SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of
showers and tstms early in the morning.
.SAT NIGHT...SW winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. A slight chance of showers and tstms.
.SUN...N winds 10 kt, becoming SE in the afternoon. Seas 2 ft. A
slight chance of showers and tstms.
.SUN NIGHT...S winds 10 to 15 kt, becoming E after midnight. Seas
2 to 3 ft. A slight chance of showers early in the evening. A
slight chance of tstms until early morning. A chance of showers
in the late evening and overnight.

Winds and seas higher in and near tstms.

$$

AMZ352-250815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
304 PM EDT Tue Sep 24 2024

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 10 seconds and S 2 ft at 3 seconds.
.WED...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and E 2 ft at 10 seconds.
.WED NIGHT...SE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft
at 6 seconds and E 2 ft at 10 seconds. A slight chance of tstms.
A slight chance of showers early in the evening, then a chance of
showers in the late evening and overnight.
.THU...SE winds 15 to 20 kt, increasing to 25 to 30 kt in the
afternoon. Seas 4 to 6 ft, building to 6 to 8 ft in the
afternoon. Wave Detail: SE 8 ft at 7 seconds and E 1 foot at
10 seconds. Showers likely. A slight chance of tstms. Some tstms
may produce heavy rainfall in the afternoon.
.THU NIGHT...SE winds 30 kt with gusts to 40 kt. Seas 9 to 13 ft.
Wave Detail: SE 12 ft at 9 seconds. Showers with a slight chance
of tstms. Some tstms may produce heavy rainfall.
.FRI...S winds 25 to 30 kt. Seas 9 to 11 ft, subsiding to 6 to
8 ft in the afternoon. Wave Detail: S 11 ft at 9 seconds. Showers
with a slight chance of tstms early in the morning, then a chance
of showers with a slight chance of tstms in the late morning and
early afternoon. Some tstms may produce heavy rainfall early in
the morning.
.FRI NIGHT...SW winds 15 to 20 kt with gusts to 30 kt,
diminishing to 10 to 15 kt with gusts to 20 kt after midnight.
Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. A slight
chance of showers and tstms in the late evening and early
morning.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms late.
.SAT NIGHT...S winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. A slight chance of showers and tstms.
.SUN...NW winds 10 kt, becoming S in the afternoon. Seas 2 ft. A
slight chance of showers and tstms.
.SUN NIGHT...S winds 10 kt, becoming NE after midnight. Seas
2 ft. A slight chance of showers in the evening. A slight chance
of tstms until early morning. A chance of showers after midnight.


Winds and seas higher in and near tstms.

$$

AMZ354-250815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
304 PM EDT Tue Sep 24 2024

.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 10 seconds and SE 2 ft at 3 seconds.
.WED...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. Wave Detail: SE 3 ft at 4 seconds and E 3 ft at
11 seconds.
.WED NIGHT...SE winds 15 to 20 kt. Seas 3 to 4 ft, building to
4 to 5 ft after midnight. Wave Detail: SE 5 ft at 6 seconds and E
2 ft at 10 seconds. A slight chance of tstms.
.THU...SE winds 15 to 20 kt with gusts to 25 kt, increasing to
25 to 30 kt in the afternoon. Seas 5 to 7 ft, building to 7 to
9 ft in the afternoon. Wave Detail: SE 9 ft at 7 seconds and E
1 foot at 10 seconds. Showers likely with a slight chance of
tstms in the morning, then showers with a slight chance of tstms
in the afternoon. Some tstms may produce heavy rainfall in the
afternoon.
.THU NIGHT...Tropical storm conditions possible. SE winds 30 to
35 kt with gusts to 45 kt. Seas 9 to 13 ft, subsiding to 9 to
11 ft after midnight. Wave Detail: SE 12 ft at 8 seconds. A
slight chance of tstms. Showers. Some tstms may produce heavy
rainfall.
.FRI...S winds 25 to 30 kt. Seas 7 to 9 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: SE 9 ft at 9 seconds. Showers
likely with a slight chance of tstms early in the morning, then a
slight chance of showers and tstms in the late morning and early
afternoon. Some tstms may produce heavy rainfall early in the
morning.
.FRI NIGHT...SW winds 15 to 20 kt with gusts to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft,
subsiding to 2 to 3 ft after midnight.
.SAT...W winds 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. A slight chance of showers and tstms in the afternoon.
.SAT NIGHT...S winds 10 kt, becoming W after midnight. Seas 2 ft.
A slight chance of showers and tstms.
.SUN...NW winds 10 kt, becoming S in the afternoon. Seas 2 ft. A
slight chance of showers and tstms.
.SUN NIGHT...SE winds 10 kt. Seas 2 ft. A slight chance of
showers in the evening. A slight chance of tstms until early
morning. A chance of showers after midnight.

Winds and seas higher in and near tstms.

$$

AMZ374-250815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
304 PM EDT Tue Sep 24 2024

.TONIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 10 seconds and SE 2 ft at 4 seconds.
.WED...SE winds 10 to 15 kt. Seas 3 to 4 ft, building to 4 to
5 ft in the afternoon. Wave Detail: E 4 ft at 11 seconds and SE
3 ft at 5 seconds.
.WED NIGHT...SE winds 15 to 20 kt. Seas 4 to 6 ft, building to
5 to 7 ft after midnight. Wave Detail: SE 6 ft at 6 seconds and E
3 ft at 10 seconds. A slight chance of tstms.
.THU...SE winds 15 to 20 kt with gusts to 25 kt, increasing to
25 to 30 kt in the afternoon. Seas 7 to 9 ft, building to 9 to
13 ft in the afternoon. Wave Detail: SE 11 ft at 7 seconds and E
2 ft at 10 seconds. Showers likely with a slight chance of tstms
in the morning, then showers with a slight chance of tstms in the
afternoon. Some tstms may produce heavy rainfall in the
afternoon.
.THU NIGHT...Tropical storm conditions possible. SE winds 30 to
35 kt with gusts to 45 kt. Seas 12 to 16 ft. Wave Detail: SE
13 ft at 9 seconds. Showers with a slight chance of tstms. Some
tstms may produce heavy rainfall.
.FRI...S winds 25 to 30 kt. Seas 10 to 14 ft, subsiding to 6 to
8 ft in the afternoon. Wave Detail: SE 13 ft at 9 seconds and S
11 ft at 8 seconds. Showers with a slight chance of tstms early
in the morning, then a chance of showers with a slight chance of
tstms in the late morning and early afternoon. A slight chance of
showers late. Some tstms may produce heavy rainfall early in the
morning.
.FRI NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after
midnight. A slight chance of tstms. A slight chance of showers.
.SAT...W winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of
showers and tstms.
.SAT NIGHT...S winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. A slight chance of tstms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.SUN...NW winds 10 kt. Seas 2 to 3 ft. 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.
.SUN NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of
tstms until early morning. A chance of showers.

Winds and seas higher in and near tstms.

$$