Coastal Waters Forecast
Issued by NWS Charleston, SC

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085 FZUS52 KCHS 212317 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 717 PM EDT Fri Jun 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 AMZ300-221230- 717 PM EDT Fri Jun 21 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Tropical low pressure will move onshore along the Northeast Florida and Southeast Georgia coast tonight. High pressure will then become the primary feature this weekend and into next week. $$ AMZ330-221230- Charleston Harbor- 717 PM EDT Fri Jun 21 2024 .REST OF TONIGHT...SE winds 10 kt. A chance of showers this evening, then a slight chance of showers. A slight chance of tstms late. .SAT...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. A chance of showers and tstms. .SAT NIGHT...S winds 10 to 15 kt. A chance of showers and tstms. .SUN...S winds 10 to 15 kt. A chance of showers and tstms. .SUN NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon. .MON NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. A chance of showers and tstms. .TUE NIGHT...S winds 5 to 10 kt. A slight chance of showers and tstms. .WED...SW winds 5 to 10 kt. A chance of showers and tstms. .WED NIGHT...SW winds 10 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 83 degrees. $$ AMZ350-221230- Waters from South Santee River to Edisto Beach SC out 20 NM- 717 PM EDT Fri Jun 21 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF TONIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds. A chance of showers until early morning, then a slight chance of showers and tstms late. .SAT...SE winds 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and S 1 foot at 5 seconds. A chance of showers and tstms. .SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 5 seconds. A chance of showers and tstms. .SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 3 ft at 8 seconds. A chance of showers and tstms, mainly in the morning. .SUN NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SE 3 ft at 7 seconds, becoming SE 4 ft at 7 seconds. A chance of showers and tstms. .MON...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds. A chance of showers and tstms, mainly in the morning. .MON NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. A chance of showers and tstms. .TUE...SW winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .TUE NIGHT...S winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ352-221230- Waters from Edisto Beach SC to Savannah GA out 20 NM- 717 PM EDT Fri Jun 21 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... .REST OF TONIGHT...SE winds 10 to 15 kt with gusts to 25 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 9 seconds. A chance of showers until early morning, then a chance of showers and tstms late. .SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. Showers and tstms likely. .SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SE 4 ft at 8 seconds, becoming SE 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at 5 seconds. Showers and tstms likely. .SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A chance of showers and tstms. .MON...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds. A chance of showers and tstms, mainly in the morning. .MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. .TUE...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 5 to 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ354-221230- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 717 PM EDT Fri Jun 21 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... .REST OF TONIGHT...E winds 15 to 20 kt with gust to 25 kt, becoming SE late. Seas 4 to 6 ft, subsiding to 4 to 5 ft. Wave Detail: E 6 ft at 9 seconds, becoming E 5 ft at 9 seconds. A chance of showers this evening, then showers likely. Tstms likely late. .SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. Showers and tstms likely. .SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. A chance of showers and tstms in the evening, then showers and tstms likely after midnight. .SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. Showers and tstms likely. .SUN NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SE 3 ft at 6 seconds. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: SE 3 ft at 6 seconds. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon. .MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .TUE...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 10 kt. Seas 2 ft. A chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ374-221230- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 717 PM EDT Fri Jun 21 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SATURDAY... .REST OF TONIGHT...SE winds 15 to 20 kt with gust to 25 kt, becoming 15 kt late. Seas 6 to 7 ft, subsiding to 5 to 6 ft. Wave Detail: E 7 ft at 9 seconds, becoming E 6 ft at 8 seconds. A chance of showers this evening, then showers likely. Tstms likely late. .SAT...SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds. Showers and tstms likely. .SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. Showers and tstms likely. .SUN...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. Showers and tstms likely. .SUN NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds, becoming S 4 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers and tstms. .MON...SW winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. Wave Detail: SE 4 ft at 7 seconds, becoming S 3 ft at 6 seconds. A chance of showers and tstms, mainly in the morning. .MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .TUE NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$