Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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951 FZUS52 KCHS 121119 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 719 AM EDT Sun May 12 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 AMZ300-130030- 719 AM EDT Sun May 12 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will prevail into Monday. A storm system will affect the area by the middle of the week. Another system could arrive later in the week. $$ AMZ330-130030- Charleston Harbor- 719 AM EDT Sun May 12 2024 .TODAY...W winds 10 to 15 kt, becoming SW 10 kt in the afternoon. .TONIGHT...SW winds 5 kt. .MON...SE winds 5 to 10 kt. A slight chance of showers in the afternoon. .MON NIGHT...S winds 10 to 15 kt. A chance of tstms. A chance of showers in the evening, then showers after midnight. .TUE...S winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Showers with a chance of tstms. .TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. Showers with a chance of tstms. .WED...SW winds 15 kt. A chance of showers and tstms. .WED NIGHT...W winds 10 to 15 kt. .THU...W winds 10 kt. .THU NIGHT...S winds 10 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 75 degrees. $$ AMZ350-130030- Waters from South Santee River to Edisto Beach SC out 20 NM- 719 AM EDT Sun May 12 2024 .TODAY...W winds 10 to 15 kt, becoming SW 10 kt in the afternoon. Seas 2 ft. Wave Detail: E 2 ft at 7 seconds and W 1 foot at 3 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .MON...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. A slight chance of showers in the afternoon. .MON NIGHT...S 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: S 2 ft at 4 seconds and E 1 foot at 9 seconds, becoming S 4 ft at 5 seconds and E 1 foot at 9 seconds. A chance of tstms. A chance of showers in the evening, then showers after midnight. .TUE...S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, building to 4 to 6 ft in the afternoon. Wave Detail: S 4 ft at 6 seconds and E 1 foot at 9 seconds, becoming S 5 ft at 6 seconds and E 1 foot at 9 seconds. Showers with a chance of tstms. .TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: S 5 ft at 7 seconds and E 1 foot at 9 seconds, becoming S 6 ft at 7 seconds and E 1 foot at 9 seconds. Showers with a chance of tstms. .WED...SW winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers and tstms. .WED NIGHT...W winds 10 to 15 kt. Seas 4 to 5 ft. .THU...W winds 10 to 15 kt. Seas 2 to 3 ft. .THU NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ352-130030- Waters from Edisto Beach SC to Savannah GA out 20 NM- 719 AM EDT Sun May 12 2024 .TODAY...W winds 5 to 10 kt, becoming S 10 kt in the afternoon. Seas 2 ft. Wave Detail: E 2 ft at 7 seconds and W 1 foot at 2 seconds. .TONIGHT...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .MON...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. A chance of showers with a slight chance of tstms in the afternoon. .MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SE 3 ft at 4 seconds and E 1 foot at 8 seconds, becoming S 4 ft at 5 seconds and E 2 ft at 8 seconds. A chance of tstms. Showers. .TUE...S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 7 seconds. Showers with a chance of tstms. .TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 6 seconds and E 1 foot at 9 seconds. Showers with a chance of tstms. .WED...SW winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers and tstms. .WED NIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. .THU...W winds 10 to 15 kt. Seas 2 to 3 ft. .THU NIGHT...S winds 10 kt. Seas 2 to 3 ft. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ354-130030- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 719 AM EDT Sun May 12 2024 .TODAY...SW winds 5 to 10 kt, becoming S 10 kt in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 6 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 3 seconds. .MON...SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon. Seas 2 ft. Wave Detail: SE 2 ft at 3 seconds and E 2 ft at 8 seconds. A slight chance of showers in the morning, then a chance of showers with a slight chance of tstms in the afternoon. .MON NIGHT...SE winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 5 seconds and E 1 foot at 8 seconds. A chance of tstms. Showers. .TUE...S winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 6 seconds and E 1 foot at 9 seconds. Showers with a chance of tstms. .TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: S 4 ft at 6 seconds and E 1 foot at 9 seconds. Showers with a chance of tstms. .WED...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. .WED NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. .THU...W winds 10 to 15 kt. Seas 2 to 3 ft. .THU NIGHT...SE winds 10 kt. Seas 2 ft. A slight chance of showers. Winds and seas higher in and near tstms. $$ AMZ374-130030- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 719 AM EDT Sun May 12 2024 .TODAY...W winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 ft. Wave Detail: NE 2 ft at 7 seconds and E 1 foot at 12 seconds. .TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft at 8 seconds and SW 1 foot at 2 seconds. .MON...SE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds and E 2 ft at 8 seconds. A slight chance of showers in the morning, then a chance of showers with a slight chance of tstms in the afternoon. .MON NIGHT...SE winds 10 to 15 kt, becoming S 15 to 20 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft at 4 seconds and E 2 ft at 8 seconds, becoming SE 4 ft at 7 seconds. A chance of tstms. Showers. .TUE...S winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft, building to 5 to 6 ft in the afternoon. Wave Detail: S 4 ft at 6 seconds and E 3 ft at 9 seconds, becoming S 5 ft at 6 seconds and E 2 ft at 9 seconds. Showers with a chance of tstms. .TUE NIGHT...SW winds 15 to 20 kt with gusts to 30 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 6 seconds and E 4 ft at 9 seconds. Showers with a chance of tstms. .WED...SW winds 15 to 20 kt. Seas 4 to 5 ft. A chance of showers and tstms. .WED NIGHT...W winds 15 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. .THU...W winds 10 to 15 kt. Seas 2 to 3 ft. .THU NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of showers. Winds and seas higher in and near tstms. $$