Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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827 FZUS52 KCHS 151654 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 1254 PM EDT Sun Sep 15 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 AMZ300-160515- 1254 PM EDT Sun Sep 15 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will remain over the region this week. Developing low pressure offshore of the Southeast U.S. coast is expected to move into coastal North Carolina Monday night into Tuesday before moving into the Mid-Atlantic Wednesday. $$ AMZ330-160515- Charleston Harbor- 1254 PM EDT Sun Sep 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...NE winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. A chance of showers. A slight chance of tstms late. .TONIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. A slight chance of tstms in the evening. A chance of showers. .MON...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers, mainly in the morning. .MON NIGHT...N winds 10 to 15 kt. A slight chance of showers in the evening. .TUE...NW winds 10 kt, becoming SW in the afternoon. .TUE NIGHT...S winds 5 to 10 kt. .WED...SW winds 5 kt. A slight chance of showers and tstms. .WED NIGHT...SW winds 5 kt. .THU...W winds 5 to 10 kt. A slight chance of showers and tstms. .THU NIGHT...SE winds 5 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 77 degrees. $$ AMZ350-160515- Waters from South Santee River to Edisto Beach SC out 20 NM- 1254 PM EDT Sun Sep 15 2024 ...GALE WARNING IN EFFECT THROUGH MONDAY MORNING... .THIS AFTERNOON...NE winds 25 to 30 kt. Seas 8 to 10 ft. Wave Detail: E 10 ft at 9 seconds. A slight chance of tstms. Showers likely early, then a chance of showers late. .TONIGHT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: E 9 ft at 10 seconds, becoming E 8 ft at 10 seconds. A chance of showers with a slight chance of tstms. .MON...N winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: E 8 ft at 10 seconds, becoming E 7 ft at 10 seconds. A chance of showers. .MON NIGHT...N winds 15 to 20 kt, becoming NW 10 to 15 kt after midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: E 6 ft at 10 seconds, becoming E 5 ft at 10 seconds. A slight chance of showers. .TUE...NW winds 10 to 15 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. A slight chance of showers. .TUE NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds and SW 1 foot at 3 seconds. A slight chance of showers. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU...W winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. $$ AMZ352-160515- Waters from Edisto Beach SC to Savannah GA out 20 NM- 1254 PM EDT Sun Sep 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .THIS AFTERNOON...NE winds 25 kt with gusts to 30 kt. Seas 6 to 8 ft. Wave Detail: E 8 ft at 9 seconds. A slight chance of tstms. Showers likely early, then a chance of showers late. .TONIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 6 to 8 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 8 ft at 10 seconds, becoming E 6 ft at 10 seconds. A chance of showers with a slight chance of tstms in the evening, then a slight chance of showers after midnight. .MON...N winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: E 7 ft at 10 seconds, becoming E 6 ft at 10 seconds. A slight chance of showers in the morning. .MON NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds. .TUE...NW winds 10 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds. .TUE NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: E 4 ft at 9 seconds, becoming E 3 ft at 9 seconds. A slight chance of showers after midnight. .WED...W winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU...W winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 5 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. $$ AMZ354-160515- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 1254 PM EDT Sun Sep 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .THIS AFTERNOON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft. Wave Detail: NE 7 ft at 8 seconds. A chance of showers with a slight chance of tstms. .TONIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 7 ft at 10 seconds, becoming E 6 ft at 10 seconds. A slight chance of showers. .MON...N 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 10 seconds. .MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds. .TUE...N winds 10 kt, becoming E in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds. .TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. .WED...N winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU...W winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. $$ AMZ374-160515- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 1254 PM EDT Sun Sep 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 9 seconds. A chance of showers with a slight chance of tstms. .TONIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 8 to 10 ft, subsiding to 7 to 9 ft after midnight. Wave Detail: NE 9 ft at 10 seconds, becoming E 9 ft at 10 seconds. A slight chance of tstms in the evening. A chance of showers. .MON...N winds 15 to 20 kt with gusts to 25 kt. Seas 6 to 8 ft, subsiding to 6 to 7 ft in the afternoon. Wave Detail: NE 8 ft at 10 seconds, becoming NE 7 ft at 10 seconds. A slight chance of showers. .MON NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: NE 7 ft at 10 seconds, becoming E 6 ft at 10 seconds. A slight chance of showers. .TUE...N winds 5 to 10 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Wave Detail: E 6 ft at 10 seconds, becoming E 5 ft at 10 seconds. A slight chance of showers. .TUE NIGHT...SE winds 10 kt, becoming S after midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 9 seconds. A slight chance of showers. A slight chance of tstms after midnight. .WED...N winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .WED NIGHT...S winds 5 kt. Seas 3 to 4 ft. A chance of showers and tstms. .THU...W winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. Winds and seas higher in and near tstms. $$