Station List

National Weather Service Marine Forecast FZUS52 KCHS

FZUS52 KCHS 171124
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
724 AM EDT Fri Apr 17 2026

South Santee River SC to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary

AMZ300-180100
724 AM EDT Fri Apr 17 2026

.Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Atlantic high pressure will prevail through Saturday. A strong cold front will push across the waters Sunday bringing a period of hazardous winds and seas. Improving conditions arrive Sunday night into Monday as high pressure quickly returns.

AMZ340-180100
Charleston Harbor
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 5 to 10 kt.

TONIGHT
SW winds 5 to 10 kt.

SAT
SW winds 5 kt, becoming S in the afternoon.

SAT NIGHT
S winds 10 kt.

SUN
SW winds 10 kt, becoming W with gusts to 20 kt in the afternoon. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 15 kt with gusts to 20 kt. A slight chance of showers in the evening.

MON
NE winds 10 to 15 kt.

MON NIGHT
SE winds 5 to 10 kt.

TUE
NE winds 5 to 10 kt.

TUE NIGHT
S winds 5 to 10 kt.

AMZ360-180100
Coastal waters from South Santee River to Edisto Beach SC out 20 NM
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 9 seconds.

TONIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 9 seconds.

SAT
SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds.

SUN
SW winds 15 kt, becoming W in the afternoon. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 20 to 25 kt with gusts to 30 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: NW 3 ft at 5 seconds and E 2 ft at 8 seconds, becoming N 5 ft at 5 seconds and SW 1 foot at 5 seconds. A slight chance of tstms in the evening. A slight chance of showers.

MON
NE winds 20 to 25 kt. Seas 4 to 6 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 4 to 5 ft.

TUE
NE winds 15 to 20 kt. Seas 3 to 4 ft.

TUE NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.

AMZ362-180100
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 9 seconds.

TONIGHT
S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and S 1 foot at 4 seconds.

SAT
S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds.

SUN
SW winds 10 to 15 kt, becoming W 15 to 20 kt in the afternoon. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 20 to 25 kt with gusts to 30 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: NW 3 ft at 4 seconds and SE 3 ft at 8 seconds, becoming N 5 ft at 5 seconds. A slight chance of showers.

MON
NE winds 20 to 25 kt. Seas 4 to 6 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 4 to 5 ft.

TUE
NE winds 15 to 20 kt. Seas 3 to 4 ft.

TUE NIGHT
SE winds 5 to 10 kt. Seas 3 ft.

AMZ364-180100
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 5 to 10 kt, becoming S late. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at 4 seconds.

TONIGHT
S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds.

SAT
SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds.

SUN
W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at 5 seconds. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 20 to 25 kt with gusts to 30 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: NW 3 ft at 3 seconds and SE 3 ft at 8 seconds, becoming NE 5 ft at 5 seconds. A slight chance of showers.

MON
NE winds 20 to 25 kt. Seas 4 to 6 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 4 to 5 ft.

TUE
NE winds 15 to 20 kt. Seas 3 to 4 ft.

TUE NIGHT
SE winds 10 to 15 kt. Seas 3 to 4 ft.

AMZ380-180100
Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 9 seconds.

TONIGHT
SW winds 10 kt. Seas 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds.

SAT
SW winds 10 kt. Seas 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds.

SUN
SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 ft. Wave Detail: S 4 ft at 5 seconds and E 2 ft at 8 seconds. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 4 to 6 ft, building to 6 to 8 ft after midnight. Wave Detail: NW 5 ft at 5 seconds and SE 2 ft at 8 seconds, becoming N 8 ft at 8 seconds and SW 5 ft at 5 seconds. A slight chance of tstms in the evening. A chance of showers.

MON
NE winds 25 to 30 kt. Seas 6 to 8 ft.

MON NIGHT
NE winds 15 to 20 kt. Seas 4 to 6 ft.

TUE
NE winds 15 to 20 kt. Seas 3 to 4 ft.

TUE NIGHT
SE winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

AMZ382-180100
Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt late. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 3 ft at 9 seconds.

TONIGHT
S winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 4 seconds.

SAT
SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.

SUN
SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Seas 4 to 5 ft, building to 6 to 8 ft after midnight. Wave Detail: NW 5 ft at 4 seconds and SE 2 ft at 8 seconds, becoming NE 8 ft at 8 seconds and N 5 ft at 5 seconds. A slight chance of tstms in the evening. A slight chance of showers.

MON
NE winds 25 to 30 kt. Seas 7 to 9 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 5 to 7 ft.

TUE
NE winds 15 to 20 kt. Seas 4 to 5 ft.

TUE NIGHT
SE winds 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

AMZ384-180100
Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM
724 AM EDT Fri Apr 17 2026

TODAY
SW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt this afternoon. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 9 seconds.

TONIGHT
S winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at 9 seconds.

SAT
S winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at 8 seconds.

SAT NIGHT
S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.

SUN
SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A slight chance of showers in the afternoon.

SUN NIGHT
N winds 20 to 25 kt, becoming NE 25 to 30 kt after midnight. Seas 4 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: NW 4 ft at 4 seconds and SE 2 ft at 8 seconds, becoming NE 7 ft at 8 seconds and N 5 ft at 4 seconds. A slight chance of tstms in the evening. A slight chance of showers.

MON
NE winds 25 to 30 kt. Seas 7 to 9 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 5 to 7 ft.

TUE
NE winds 15 to 20 kt. Seas 4 to 5 ft.

TUE NIGHT
E winds 10 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.