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Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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849 FZUS52 KCHS 181028 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 628 AM EDT Thu Jul 18 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 AMZ300-182315- 628 AM EDT Thu Jul 18 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will persist offshore, while a weak trough resides inland. A cold front will approach the region Friday and likely stall nearby, before high pressure returns next week. $$ AMZ330-182315- Charleston Harbor- 628 AM EDT Thu Jul 18 2024 .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt this afternoon. A slight chance of showers and tstms this morning, then a chance of showers and tstms this afternoon. .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. Showers and tstms likely. .FRI...SW winds 5 to 10 kt. Showers and tstms likely. .FRI NIGHT...S winds 10 kt. Showers and tstms likely. .SAT...SW winds 10 to 15 kt. A chance of showers and tstms in the morning, then showers and tstms likely in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Showers and tstms likely, mainly in the evening. .SUN...SW winds 5 to 10 kt. Showers and tstms likely. .SUN NIGHT...S winds 10 kt. A chance of showers and tstms. .MON...S winds 5 to 10 kt. A chance of showers and tstms. .MON NIGHT...S winds 10 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 87 degrees. $$ AMZ350-182315- Waters from South Santee River to Edisto Beach SC out 20 NM- 628 AM EDT Thu Jul 18 2024 .TODAY...SW winds 15 to 20 kt with gusts to 23 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 9 seconds. A slight chance of showers and tstms early this morning, then a chance of showers and tstms late this morning and early afternoon. A slight chance of showers and tstms late. .TONIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 9 seconds. Showers and tstms likely. .FRI...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds. Showers and tstms likely, mainly in the morning. .FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SE 2 ft at 9 seconds. Showers and tstms likely. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds. Showers and tstms likely. .SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 9 seconds. A chance of showers and tstms. .SUN...SW winds 5 to 10 kt. Seas 2 to 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 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ352-182315- Waters from Edisto Beach SC to Savannah GA out 20 NM- 628 AM EDT Thu Jul 18 2024 .TODAY...SW winds 10 to 15 kt, becoming S with gusts to 20 kt late. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers and tstms until late afternoon, then a chance of showers and tstms late. .TONIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 9 seconds. Showers and tstms likely. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A chance of showers and tstms. .FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. Showers and tstms likely. .SAT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers and tstms. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Seas 3 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ354-182315- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 628 AM EDT Thu Jul 18 2024 .TODAY...SW winds 10 to 15 kt, becoming S late. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers and tstms until late afternoon, then a chance of showers and tstms late. .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds. Showers and tstms likely, mainly in the evening. .FRI...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 9 seconds. Showers and tstms likely. .SAT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers and tstms. .SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms likely. .SUN NIGHT...S winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ374-182315- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 628 AM EDT Thu Jul 18 2024 .TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers and tstms. .TONIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and E 2 ft at 8 seconds. A chance of showers and tstms in the evening, then showers and tstms likely after midnight. .FRI...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .FRI NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 9 seconds. A chance of showers and tstms. .SAT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .SAT NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers and tstms. .SUN...S winds 5 to 10 kt. Seas 3 ft. A chance of showers and tstms. .SUN NIGHT...S winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$