Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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195 FZUS52 KCHS 232322 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 722 PM EDT Mon Sep 23 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 AMZ300-241215- 722 PM EDT Mon Sep 23 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will linger across the region until mid week. A tropical cyclone is forecast to move generally northward across the Gulf of Mexico, then track inland across portions of Florida, Georgia, and possibly South Carolina. Refer to the latest advisory on PTC9 issued by the National Hurricane Center. $$ AMZ330-241215- Charleston Harbor- 722 PM EDT Mon Sep 23 2024 .TONIGHT...S winds 5 to 10 kt. .TUE...S winds 5 to 10 kt. .TUE NIGHT...SE winds 5 to 10 kt. .WED...SE winds 5 to 10 kt. .WED NIGHT...E winds 10 kt. .THU...E winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Waves 1 to 2 ft. A slight chance of showers in the morning. A chance of showers in the afternoon. A slight chance of tstms late. .THU NIGHT...SE winds 20 to 25 kt, increasing to 25 to 30 kt after midnight. Waves 2 to 4 ft. A slight chance of tstms. Showers. .FRI...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A slight chance of tstms. Showers likely until late afternoon, then a chance of showers late. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. A chance of showers early in the evening. A slight chance of tstms until early morning. A slight chance of showers in the late evening and overnight. .SAT...SW winds 5 to 10 kt. A slight chance of showers. .SAT NIGHT...S winds 5 to 10 kt, becoming W after midnight. A slight chance of tstms until early morning. A slight chance of showers. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 80 degrees. $$ AMZ350-241215- Waters from South Santee River to Edisto Beach SC out 20 NM- 722 PM EDT Mon Sep 23 2024 .TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and S 2 ft at 4 seconds. .WED...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 ft. Wave Detail: E 3 ft at 11 seconds and S 2 ft at 4 seconds. .WED NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and E 2 ft at 10 seconds. .THU...E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 4 to 5 ft, building to 5 to 7 ft in the afternoon. Wave Detail: SE 7 ft at 6 seconds and E 2 ft at 10 seconds. A slight chance of showers in the morning, then a chance of showers with a slight chance of tstms in the afternoon. .THU NIGHT...Tropical storm conditions possible. .FRI...S winds 20 to 25 kt with gusts to 35 kt, diminishing to 15 to 20 kt with gusts to 25 kt in the afternoon. Seas 9 to 11 ft, subsiding to 7 to 9 ft in the afternoon. A slight chance of tstms. Showers likely until late afternoon, then a chance of showers late. .FRI NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight. A chance of showers with a slight chance of tstms until early morning, then a chance of showers late. .SAT...SW winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. A chance of showers until late afternoon. A slight chance of tstms in the afternoon. A slight chance of showers late. .SAT NIGHT...S winds 10 kt, becoming W after midnight. Seas 3 to 4 ft. A slight chance of tstms until early morning. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ352-241215- Waters from Edisto Beach SC to Savannah GA out 20 NM- 722 PM EDT Mon Sep 23 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 9 seconds. .TUE...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 10 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and S 2 ft at 4 seconds. .WED...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 10 seconds. .WED NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft at 5 seconds and E 2 ft at 10 seconds. A slight chance of showers after midnight. .THU...Tropical storm conditions possible. A chance of showers until late afternoon. A slight chance of tstms in the afternoon. Showers likely late. .THU NIGHT...Tropical storm conditions possible. .FRI...S winds 25 to 30 kt, diminishing to 15 to 20 kt with gusts to 25 kt in the afternoon. Seas 9 to 11 ft, subsiding to 7 to 9 ft in the afternoon. A slight chance of tstms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .FRI NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Seas 5 to 7 ft, subsiding to 4 to 5 ft after midnight. A chance of showers with a slight chance of tstms until early morning, then a chance of showers late. .SAT...W winds 10 kt, becoming S in the afternoon. Seas 3 to 4 ft. A chance of showers until late afternoon. A slight chance of tstms in the afternoon. A slight chance of showers late. .SAT NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. A slight chance of tstms until early morning. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ354-241215- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 722 PM EDT Mon Sep 23 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. .TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and SE 2 ft at 3 seconds. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 10 seconds. .WED NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 5 ft at 6 seconds and E 2 ft at 10 seconds. A slight chance of showers after midnight. .THU...Tropical storm conditions possible. A chance of showers in the morning. A slight chance of tstms in the late morning and afternoon. Showers in the afternoon. .THU NIGHT...Tropical storm conditions possible. .FRI...S winds 25 to 30 kt, diminishing to 15 to 20 kt with gusts to 25 kt in the afternoon. Seas 8 to 10 ft, subsiding to 6 to 8 ft in the afternoon. A slight chance of tstms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .FRI NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. A chance of showers with a slight chance of tstms. .SAT...W winds 10 kt, becoming S in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. A chance of showers until late afternoon. A slight chance of tstms in the afternoon. A slight chance of showers late. .SAT NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. A slight chance of tstms until early morning. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ374-241215- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 722 PM EDT Mon Sep 23 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. .TUE...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 10 seconds. .TUE NIGHT...SE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and SE 2 ft at 3 seconds. .WED...SE winds 10 to 15 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: E 4 ft at 11 seconds and SE 3 ft at 5 seconds. .WED NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft, building to 5 to 7 ft after midnight. Wave Detail: SE 5 ft at 6 seconds and E 3 ft at 10 seconds. A slight chance of showers after midnight. .THU...Tropical storm conditions possible. .THU NIGHT...Tropical storm conditions possible. .FRI...S winds 20 to 25 kt with gusts to 35 kt, diminishing to 15 to 20 kt with gusts to 25 kt in the afternoon. Seas 10 to 14 ft, subsiding to 7 to 9 ft in the afternoon. A slight chance of tstms. Showers likely until late afternoon, then a chance of showers late. .FRI NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight. A chance of showers with a slight chance of tstms until early morning, then a chance of showers late. .SAT...W winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. A chance of showers until late afternoon. A slight chance of tstms in the afternoon. A slight chance of showers late. .SAT NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 3 to 4 ft. A slight chance of tstms until early morning. A slight chance of showers. Winds and seas higher in and near tstms. $$