


Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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489 FZUS52 KCHS 071114 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 714 AM EDT Sat Jun 7 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 AMZ300-080015- 714 AM EDT Sat Jun 7 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Active weather pattern continues as multiple frontal boundaries impact the region. A few storms may become strong to severe severe this weekend, with damaging winds expected to be the primary hazard. A brief reprieve in heat then returns early next week in the wake of a strong cold front. $$ AMZ330-080015- Charleston Harbor- 714 AM EDT Sat Jun 7 2025 .TODAY...SW winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms late. .TONIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. .SUN...SW winds 10 to 15 kt. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...SW winds 10 to 15 kt. Showers likely with a chance of tstms. .MON...SW winds 10 to 15 kt. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .MON NIGHT...SW winds 10 to 15 kt. Showers likely with a chance of tstms. .TUE...SW winds 10 to 15 kt. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 5 to 10 kt. Showers likely with a chance of tstms. .WED...SW winds 5 to 10 kt. Showers likely with a chance of tstms. .WED NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 79 degrees. $$ AMZ350-080015- Waters from South Santee River to Edisto Beach SC out 20 NM- 714 AM EDT Sat Jun 7 2025 .TODAY...SW winds 10 to 15 kt with gusts to 20 kt, increasing to 15 to 20 kt late. Seas 2 to 3 ft, building to 3 to 4 ft this afternoon. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers and tstms. .SUN...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 9 seconds. Showers with a chance of tstms. .MON...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. Showers likely with a chance of tstms. .MON NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. Showers with a chance of tstms. .TUE...SW winds 15 kt. Seas 3 to 4 ft. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers with a chance of tstms. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ352-080015- Waters from Edisto Beach SC to Savannah GA out 20 NM- 714 AM EDT Sat Jun 7 2025 .TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms. .SUN...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 9 seconds. Showers with a chance of tstms. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of tstms. Showers. .MON NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of tstms. Showers. .TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers with a chance of tstms. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ354-080015- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 714 AM EDT Sat Jun 7 2025 .TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms in the evening. .SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 9 seconds. Showers likely with a chance of tstms. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 1 foot at 9 seconds. Showers likely with a slight chance of tstms in the morning, then showers with tstms likely in the afternoon. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 8 seconds. Showers with a chance of tstms in the evening, then a chance of showers with a slight chance of tstms after midnight. .TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers with a chance of tstms. .TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$ AMZ374-080015- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 714 AM EDT Sat Jun 7 2025 .TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. .TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 8 seconds. A slight chance of showers and tstms in the evening. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 9 seconds. Showers likely. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .SUN NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds. Showers with a chance of tstms. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 9 seconds. Showers with a chance of tstms. .MON NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds, becoming SE 4 ft at 7 seconds. Showers with a chance of tstms. .TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with a chance of tstms. .TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers with a chance of tstms. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. Winds and seas higher in and near tstms. $$