Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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918 FZUS52 KCHS 201245 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 845 AM EDT Sun Apr 20 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 AMZ300-210115- 845 AM EDT Sun Apr 20 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will linger across the region into Tuesday. A front will approach the region by midweek then become stationary over or near the area through late week. $$ AMZ330-210115- Charleston Harbor- 845 AM EDT Sun Apr 20 2025 .TODAY...S winds 5 to 10 kt, increasing to 15 kt with gusts to 20 kt this afternoon. .TONIGHT...S winds 5 to 10 kt. .MON...S winds 5 to 10 kt. .MON NIGHT...S winds 5 to 10 kt. .TUE...SW winds 5 kt, becoming S in the afternoon. .TUE NIGHT...S winds 5 to 10 kt. .WED...S winds 5 to 10 kt. A slight chance of showers and tstms. .WED NIGHT...S winds 5 to 10 kt. A slight chance of showers and tstms. .THU...SE winds 5 to 10 kt. A slight chance of showers and tstms. .THU NIGHT...SE winds 5 to 10 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 69 degrees. $$ AMZ350-210115- Waters from South Santee River to Edisto Beach SC out 20 NM- 845 AM EDT Sun Apr 20 2025 .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt near the immediate coast this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .TUE...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .WED...S winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms. .THU...SE winds 5 to 10 kt. Seas 2 ft. A slight chance of showers and tstms. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Winds and seas higher in and near tstms. $$ AMZ352-210115- Waters from Edisto Beach SC to Savannah GA out 20 NM- 845 AM EDT Sun Apr 20 2025 .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt near the immediate coast this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .WED...S winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. .THU...SE winds 5 to 10 kt. Seas 2 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 ft. $$ AMZ354-210115- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 845 AM EDT Sun Apr 20 2025 .TODAY...S winds 5 to 10 kt, increasing to 10 to 15 kt near the immediate coast this afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .MON NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. .WED...S winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. $$ AMZ374-210115- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 845 AM EDT Sun Apr 20 2025 .TODAY...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds. .TONIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and E 1 foot at 7 seconds. .MON...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and E 1 foot at 7 seconds. .MON NIGHT...S winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at 8 seconds and E 1 foot at 7 seconds. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and E 1 foot at 8 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at 8 seconds and E 1 foot at 8 seconds. .WED...S winds 5 kt. Seas 3 ft. .WED NIGHT...SE winds 5 to 10 kt. Seas 3 ft. .THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. $$