Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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972 FZUS52 KCHS 200707 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 307 AM EDT Thu Jun 20 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 AMZ300-202015- 307 AM EDT Thu Jun 20 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will extend across the region today. A tropical wave will impact the Southeast U.S coast tonight into Friday. High pressure will return over the weekend. $$ AMZ330-202015- Charleston Harbor- 307 AM EDT Thu Jun 20 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...E winds 10 to 15 kt early, increasing to 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A slight chance of showers early this morning. .TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers with a slight chance of tstms after midnight. .FRI...E winds 10 to 15 kt. A chance of showers and tstms. .FRI NIGHT...E winds 10 kt, becoming SE after midnight. A chance of showers and tstms. .SAT...SE winds 5 kt, increasing to 10 kt in the afternoon. A chance of showers and tstms. .SAT NIGHT...S winds 10 kt. A chance of showers and tstms. .SUN...S winds 10 to 15 kt. A chance of showers and tstms. .SUN NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. Showers and tstms likely. .MON NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 82 degrees. $$ AMZ350-202015- Waters from South Santee River to Edisto Beach SC out 20 NM- 307 AM EDT Thu Jun 20 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TODAY...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A slight chance of showers this morning. .TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft. Wave Detail: E 6 ft at 9 seconds. A slight chance of tstms. A slight chance of showers in the evening, then a chance of showers after midnight. .FRI...E winds 10 to 15 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: E 6 ft at 9 seconds. A chance of tstms. Showers likely, mainly in the morning. .FRI NIGHT...SE winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: E 5 ft at 9 seconds, becoming E 4 ft at 9 seconds. A chance of showers and tstms. .SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. A chance of showers and tstms. .SAT NIGHT...S winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers and tstms likely. Winds and seas higher in and near tstms. $$ AMZ352-202015- Waters from Edisto Beach SC to Savannah GA out 20 NM- 307 AM EDT Thu Jun 20 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TODAY...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A slight chance of showers until late afternoon. .TONIGHT...NE winds 20 kt with gusts to 25 kt. Seas 5 to 6 ft, building to 5 to 7 ft after midnight. Wave Detail: E 6 ft at 9 seconds. A slight chance of tstms. A slight chance of showers in the evening, then a chance of showers after midnight. .FRI...E winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 5 to 6 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: E 6 ft at 9 seconds. A chance of tstms. Showers likely, mainly in the morning. .FRI NIGHT...SE winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: E 5 ft at 9 seconds, becoming E 4 ft at 9 seconds. A chance of showers and tstms. .SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. A chance of showers and tstms. .SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and tstms likely. Winds and seas higher in and near tstms. $$ AMZ354-202015- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 307 AM EDT Thu Jun 20 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TODAY...E winds 20 kt with gusts to 25 kt early, becoming NE. Seas 4 to 6 ft, building to 5 to 6 ft this afternoon. Wave Detail: E 6 ft at 8 seconds. A slight chance of showers until late afternoon. .TONIGHT...NE winds 20 to 25 kt. Seas 5 to 6 ft, building to 5 to 7 ft after midnight. Wave Detail: E 6 ft at 8 seconds, becoming E 6 ft at 9 seconds. A chance of showers with a slight chance of tstms. .FRI...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: E 6 ft at 9 seconds. Showers likely with a chance of tstms. .FRI NIGHT...E winds 10 to 15 kt, becoming SE 5 to 10 kt after midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: E 5 ft at 9 seconds, becoming E 4 ft at 9 seconds. Showers likely with a chance of tstms. .SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. Showers likely with a chance of tstms. .SAT NIGHT...S winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a chance of tstms. .SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and tstms likely. .MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and tstms likely. Winds and seas higher in and near tstms. $$ AMZ374-202015- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 307 AM EDT Thu Jun 20 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .TODAY...E winds 20 kt with gusts to 25 kt early, becoming NE. Seas 6 to 7 ft, building to 6 to 8 ft this afternoon. Wave Detail: E 7 ft at 8 seconds. A slight chance of showers. .TONIGHT...NE winds 20 kt with gusts to 25 kt. Seas 6 to 8 ft, building to 7 to 9 ft after midnight. Wave Detail: E 7 ft at 9 seconds. A slight chance of tstms. A chance of showers in the evening, then showers likely after midnight. .FRI...E winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 6 to 8 ft, subsiding to 6 to 7 ft in the afternoon. Wave Detail: E 7 ft at 9 seconds. A chance of tstms. Showers. .FRI NIGHT...SE winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 5 to 6 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: E 6 ft at 9 seconds, becoming E 5 ft at 9 seconds. Showers likely with a chance of tstms. .SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds. Showers likely with a chance of tstms. .SAT NIGHT...S winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 10 kt. Seas 3 ft. A chance of showers and tstms. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms. .MON NIGHT...SW winds 15 kt. Seas 3 ft. Showers and tstms likely. Winds and seas higher in and near tstms. $$