330
FZUS52 KCHS 212011
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
411 PM EDT Tue May 21 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

AMZ300-220915-
411 PM EDT Tue May 21 2024

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will persist into late week. Diurnal convection is
expected during the weekend. A cold front might approach early
next week.

$$

AMZ330-220915-
Charleston Harbor-
411 PM EDT Tue May 21 2024

.TONIGHT...E winds 10 to 15 kt early, diminishing to 5 to 10 kt.
.WED...NE winds 5 kt, becoming E 10 kt in the afternoon.
.WED NIGHT...S winds 5 to 10 kt.
.THU...S winds 5 kt, increasing to 10 to 15 kt with gusts to
20 kt in the afternoon.
.THU NIGHT...S winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight.
.FRI...SW winds 10 to 15 kt.
.FRI NIGHT...SW winds 10 to 15 kt.
.SAT...SW winds 10 to 15 kt. A slight chance of showers and
tstms.
.SAT NIGHT...SW winds 10 to 15 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 76 degrees.

$$

AMZ350-220915-
Waters from South Santee River to Edisto Beach SC out 20 NM-
411 PM EDT Tue May 21 2024

.TONIGHT...E winds 10 to 15 kt early, diminishing to 5 to 10 kt.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 foot at
10 seconds.
.WED...NE winds 5 kt, becoming E in the afternoon. Seas 2 ft.
Wave Detail: E 2 ft at 7 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 9 seconds.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: E 2 ft at 9 seconds and SW
1 foot at 3 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 3 seconds and E 2 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt. Seas 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight
chance of showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-220915-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
411 PM EDT Tue May 21 2024

.TONIGHT...E winds 10 to 15 kt early, diminishing to 5 to 10 kt.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 foot at
10 seconds.
.WED...E winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at 7 seconds
and SE 1 foot at 10 seconds.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: E 2 ft at 9 seconds and S
1 foot at 2 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 3 seconds and E 2 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt. Seas 2 ft.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT...SW winds 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-220915-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
411 PM EDT Tue May 21 2024

.TONIGHT...E winds 10 to 15 kt early, diminishing to 5 to 10 kt.
Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave
Detail: E 4 ft at 7 seconds, becoming E 3 ft at 7 seconds.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
7 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: E 2 ft at 9 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft
at 3 seconds and E 2 ft at 9 seconds.
.FRI...S winds 10 to 15 kt. Seas 2 ft.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT...SW winds 10 kt. Seas 2 ft.
.SAT NIGHT...SW winds 10 kt. Seas 2 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-220915-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
411 PM EDT Tue May 21 2024

.TONIGHT...NE winds 10 to 15 kt early, diminishing to 5 to 10 kt.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and SE 1 foot at
10 seconds.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 7 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: E 2 ft
at 8 seconds and SE 1 foot at 9 seconds.
.FRI...S winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.

Winds and seas higher in and near tstms.

$$