Cowen Creek, SC - Rt. 21 Bridge Coastal Forecast

FZUS52 KCHS 240455
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1255 AM EDT Thu Apr 24 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

AMZ300-241730-
1255 AM EDT Thu Apr 24 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will become stationary over or near the area tonight
into Thursday, then lift north by Friday. A cold front will move
through Saturday night or Sunday, with high pressure to build
from the north early next week.

$$

AMZ330-241730-
Charleston Harbor-
1255 AM EDT Thu Apr 24 2025

.REST OF TONIGHT...E winds 5 kt.
.THU...E winds 5 kt, becoming SE 10 to 15 kt in the afternoon. A
slight chance of showers and tstms in the afternoon.
.THU NIGHT...E winds 5 to 10 kt.
.FRI...SE winds 5 to 10 kt. A slight chance of showers in the
afternoon.
.FRI NIGHT...S winds 5 kt. A slight chance of showers in the
evening.
.SAT...SW winds 5 to 10 kt. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt, becoming W after midnight. A
chance of showers with a slight chance of tstms.
.SUN...NE winds 5 to 10 kt.
.SUN NIGHT...E winds 10 kt.
.MON...E winds 10 kt.
.MON NIGHT...E 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 72 degrees.

$$

AMZ350-241730-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1255 AM EDT Thu Apr 24 2025

.REST OF TONIGHT...SE winds 5 to 10 kt, becoming E. Seas 2 ft.
Wave Detail: SE 2 ft at 8 seconds.
.THU...E winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft
at 8 seconds. A slight chance of showers and tstms in the
afternoon.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 4 seconds.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 10 kt, becoming W after midnight. Seas 2 to
3 ft. A chance of showers with a slight chance of tstms.
.SUN...NE winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of
showers.
.SUN NIGHT...NE winds 15 kt. Seas 4 to 5 ft.
.MON...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-241730-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1255 AM EDT Thu Apr 24 2025

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail:
SE 2 ft at 8 seconds.
.THU...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds and SE 1 foot at 5 seconds.
.FRI...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
9 seconds and SE 1 foot at 5 seconds.
.FRI NIGHT...S winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and SE 1 foot at 5 seconds.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds. A slight chance of showers in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of
showers.
.SUN NIGHT...E winds 15 kt. Seas 3 to 4 ft.
.MON...E winds 10 to 15 kt. Seas 4 to 5 ft.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-241730-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1255 AM EDT Thu Apr 24 2025

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E
2 ft at 9 seconds.
.THU...E winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft. Wave Detail: SE 2 ft at 5 seconds and E
2 ft at 8 seconds.
.THU NIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt after
midnight. Seas 2 ft. Wave Detail: SE 2 ft at 5 seconds and E 2 ft
at 8 seconds.
.FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 8 seconds and SE 1 foot at 5 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 1 foot at 5 seconds.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds. A slight chance of showers in the afternoon.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of
showers.
.SUN NIGHT...NE winds 15 kt. Seas 3 to 4 ft.
.MON...E winds 15 kt. Seas 3 to 4 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-241730-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1255 AM EDT Thu Apr 24 2025

.REST OF TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 9 seconds.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft
at 8 seconds.
.FRI...SE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft
at 9 seconds.
.SAT...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
9 seconds.
.SAT NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers with
a slight chance of tstms.
.SUN...N winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of
showers.
.SUN NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A slight
chance of showers and tstms.
.MON...NE winds 15 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$