Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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464 FZUS52 KCHS 201908 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 308 PM EDT Fri Sep 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 AMZ300-210815- 308 PM EDT Fri Sep 20 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure is expected to gradually strengthen across the region through early next week. A weak cold front may approach from the west around the middle of next week. $$ AMZ330-210815- Charleston Harbor- 308 PM EDT Fri Sep 20 2024 .TONIGHT...E winds 5 to 10 kt, becoming NE late. .SAT...NE winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. .SAT NIGHT...E winds 5 to 10 kt, diminishing to 5 kt after midnight. .SUN...N winds 5 kt, becoming SE in the afternoon. .SUN NIGHT...S winds 5 to 10 kt. .MON...W winds 5 to 10 kt, becoming E 10 to 15 kt in the afternoon. .MON NIGHT...SE winds 5 to 10 kt. .TUE...E winds 5 to 10 kt. .TUE NIGHT...SE winds 5 to 10 kt. .WED...E winds 5 to 10 kt. .WED NIGHT...S winds 5 to 10 kt. A slight chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 78 degrees. $$ AMZ350-210815- Waters from South Santee River to Edisto Beach SC out 20 NM- 308 PM EDT Fri Sep 20 2024 .TONIGHT...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 10 seconds. .SAT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 2 ft at 9 seconds. .SUN...N winds 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and E 2 ft at 5 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .MON...NW winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ352-210815- Waters from Edisto Beach SC to Savannah GA out 20 NM- 308 PM EDT Fri Sep 20 2024 .TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 10 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 10 seconds, becoming E 3 ft at 5 seconds and E 2 ft at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 2 ft at 9 seconds. .SUN...NE winds 5 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 3 ft at 10 seconds. .SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .MON...W winds 5 to 10 kt, becoming E in the afternoon. Seas 2 ft. Wave Detail: E 2 ft at 10 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. .TUE NIGHT...SE winds 10 kt. Seas 2 to 3 ft. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ354-210815- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 308 PM EDT Fri Sep 20 2024 .TONIGHT...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and E 2 ft at 3 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 10 seconds. .SAT NIGHT...E winds 10 to 15 kt, becoming NE 5 to 10 kt after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: E 3 ft at 6 seconds and E 2 ft at 9 seconds. .SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 3 ft at 10 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .MON...NW winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .MON NIGHT...SE winds 5 to 10 kt. Seas 2 ft. .TUE...E winds 5 to 10 kt. Seas 2 ft. .TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. .WED NIGHT...SE winds 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ374-210815- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 308 PM EDT Fri Sep 20 2024 .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and E 3 ft at 10 seconds. .SAT...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: NE 4 ft at 5 seconds and E 3 ft at 10 seconds, becoming NE 4 ft at 6 seconds and E 2 ft at 9 seconds. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: NE 4 ft at 7 seconds and E 2 ft at 9 seconds, becoming E 4 ft at 8 seconds. .SUN...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds and E 3 ft at 7 seconds. .SUN NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds. .MON...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds. .MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .TUE...E winds 5 to 10 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 kt. Seas 3 to 4 ft. .WED...E winds 10 kt. Seas 3 to 4 ft. .WED NIGHT...SE winds 10 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. Winds and seas higher in and near tstms. $$