063
FZUS52 KCHS 261935
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
335 PM 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

AMZ300-270815-
335 PM 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 this evening into Friday. Multiple
impacts are expected across our area through 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.

$$

AMZ330-270815-
Charleston Harbor-
335 PM EDT Thu Sep 26 2024

...TORNADO WATCH 684 IN EFFECT UNTIL 9 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TONIGHT...Tropical storm conditions expected. SE winds 20 to
25 kt with gusts to 30 kt, increasing to 25 to 35 kt with gusts
to 45 kt after midnight. Waves around 4 ft. Showers with a slight
chance of tstms. Some tstms may be severe with tornadoes early
this evening.
.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. Waves around 4 ft. Showers likely 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. Gusts to 25 kt in the evening.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...SW winds 5 to 10 kt.
.SUN...SW winds 5 to 10 kt.
.SUN NIGHT...SW winds 5 to 10 kt.
.MON...W winds 5 to 10 kt.
.MON NIGHT...W winds 5 to 10 kt. A slight chance of showers and
tstms in the late evening and early morning.
.TUE...NW winds 5 kt, becoming W in the afternoon.
.TUE NIGHT...W winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 81 degrees.

$$

AMZ350-270815-
Waters from South Santee River to Edisto Beach SC out 20 NM-
335 PM EDT Thu Sep 26 2024

...TORNADO WATCH 684 IN EFFECT UNTIL 9 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TONIGHT...Tropical storm conditions expected. SE winds 25 to
30 kt, increasing to 30 to 40 kt with gusts to 50 kt after
midnight. Seas 6 to 8 ft, building to 9 to 13 ft after midnight.
Wave Detail: SE 13 ft at 9 seconds. Showers with a slight chance
of tstms. Some tstms may be severe with tornadoes early this
evening.
.FRI...Tropical storm conditions expected. S winds 30 to 40 kt
with gusts to 50 kt, becoming SW 25 to 30 kt in the afternoon.
Seas 10 to 14 ft, subsiding to 9 to 11 ft in the afternoon. Wave
Detail: S 14 ft at 10 seconds. Showers likely with a chance of
tstms early in the morning, then a 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 5 to 7 ft after midnight.
Wave Detail: S 8 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft
at 8 seconds and E 2 ft at 11 seconds.
.SAT NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight.
Wave Detail: S 3 ft at 7 seconds and E 2 ft at 10 seconds. A
slight chance of showers and tstms.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 6 seconds and E 1 foot at 10 seconds. A slight chance of
showers and tstms early in the morning.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 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 early in the morning. A slight chance of showers and
tstms in the afternoon.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
2 ft. A slight chance of showers and tstms early in the morning.
A slight chance of showers and tstms in the afternoon.
.TUE NIGHT...W winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-270815-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
335 PM EDT Thu Sep 26 2024

...TORNADO WATCH 684 IN EFFECT UNTIL 9 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TONIGHT...Tropical storm conditions expected. SE winds 25 to
30 kt with gusts to 40 kt, increasing to 35 to 40 kt with gusts
to 55 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. Some tstms may be severe with tornadoes
early this evening.
.FRI...Tropical storm conditions expected. S winds 30 to 40 kt
with gusts to 50 kt, becoming SW 20 to 25 kt with gusts to 35 kt
in the afternoon. Seas 9 to 13 ft, subsiding to 7 to 9 ft in the
afternoon. Wave Detail: S 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...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Seas 5 to 7 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: SE 7 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 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds and E 1 foot at 11 seconds. A slight chance of
showers and tstms in the late evening and early morning.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 6 seconds and E 1 foot at 10 seconds.
.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 early in the morning. A slight chance of showers and
tstms in the afternoon.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.TUE...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
1 to 2 ft. A slight chance of showers and tstms early in the
morning. A slight chance of showers and tstms in the afternoon.
.TUE NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. A slight chance of showers and tstms early in the evening.

Winds and seas higher in and near tstms.

$$

AMZ354-270815-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
335 PM EDT Thu Sep 26 2024

...TORNADO WATCH 684 IN EFFECT UNTIL 9 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TONIGHT...Tropical storm conditions expected. SE winds 35 to
45 kt. Gusts to 60 kt after midnight. Seas 8 to 10 ft, building
to 10 to 14 ft after midnight. Wave Detail: SE 14 ft at
10 seconds. Showers likely with a slight chance of tstms early
this evening, then showers with a slight chance of tstms late
this evening. Some tstms may be severe with tornadoes early this
evening.
.FRI...Tropical storm conditions expected. S winds 30 to 40 kt
with gusts to 50 kt, becoming SW 20 to 25 kt with gusts to 30 kt
in the afternoon. Seas 9 to 11 ft, subsiding to 5 to 7 ft in the
afternoon. Wave Detail: SE 11 ft at 10 seconds. A chance of
showers with a slight chance of tstms early in the morning.
.FRI NIGHT...SW winds 10 to 15 kt with gusts to 20 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, subsiding to 2 to
3 ft in the afternoon. Wave Detail: SE 4 ft at 7 seconds and E
2 ft at 11 seconds.
.SAT NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds and E 2 ft at 11 seconds.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 6 seconds and E 1 foot at 11 seconds.
.SUN NIGHT...SW winds 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.MON...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. A slight chance of showers and tstms early in the morning.
A slight chance of showers and tstms in the afternoon.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft in the evening, then
1 foot or less. A slight chance of showers and tstms.
.TUE...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
1 foot or less. A slight chance of showers and tstms early in the
morning. A slight chance of showers and tstms in the afternoon.
.TUE NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
1 foot or less. A slight chance of showers and tstms early in the
evening.

Winds and seas higher in and near tstms.

$$

AMZ374-270815-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
335 PM EDT Thu Sep 26 2024

...TORNADO WATCH 684 IN EFFECT UNTIL 9 PM EDT THIS EVENING...
...TROPICAL STORM WARNING IN EFFECT...
...SMALL CRAFT SHOULD REMAIN IN PORT...

.TONIGHT...Tropical storm conditions expected. SE winds 25 to
35 kt with gusts to 45 kt, increasing to 35 to 45 kt with gusts
to 60 kt after midnight. Seas 9 to 13 ft, building to 13 to 17 ft
after midnight. Wave Detail: SE 16 ft at 9 seconds. Showers with
a slight chance of tstms. Some tstms may be severe with tornadoes
early this evening.
.FRI...Tropical storm conditions expected. S winds 30 to 40 kt
with gusts to 50 kt, becoming SW 20 to 25 kt with gusts to 35 kt
in the afternoon. Seas 11 to 15 ft, subsiding to 8 to 10 ft in
the afternoon. Wave Detail: S 15 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 15 to 20 kt with gusts to 25 kt. Seas 6 to
8 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: S 7 ft
at 8 seconds and E 6 ft at 12 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
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 chance of showers with a
slight chance of tstms.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 6 seconds and E 2 ft at 10 seconds. A slight chance of showers
and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.MON...W winds 5 to 10 kt. Seas 2 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.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers
with a slight chance of tstms.
.TUE...NW winds 5 to 10 kt. Seas 2 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.
.TUE NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 ft. A slight chance of showers and tstms.

Winds and seas higher in and near tstms.

$$