Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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874 FZUS52 KCHS 181048 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 648 AM EDT Tue Jun 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- 648 AM EDT Tue Jun 18 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will extend across the region early this week. A trough of low pressure could approach the Southeast U.S coast by late week. $$ AMZ330-182315- Charleston Harbor- 648 AM EDT Tue Jun 18 2024 .TODAY...E winds 10 to 15 kt, increasing to 15 to 20 kt this afternoon. Waves 1 to 2 ft this afternoon. .TONIGHT...E winds 15 kt. .WED...E winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A slight chance of tstms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt. A slight chance of showers and tstms. .THU...E winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms in the afternoon. .THU NIGHT...E winds 15 kt with gusts to 20 kt, becoming NE after midnight. A slight chance of showers and tstms. .FRI...NE winds 10 to 15 kt. A chance of showers and tstms. .FRI NIGHT...E winds 5 to 10 kt. A slight chance of showers and tstms. .SAT...E winds 5 to 10 kt. A chance of showers and tstms. .SAT NIGHT...S winds 5 to 10 kt. A slight chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 83 degrees. $$ AMZ350-182315- Waters from South Santee River to Edisto Beach SC out 20 NM- 648 AM EDT Tue Jun 18 2024 .TODAY...E winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft this afternoon. Wave Detail: E 4 ft at 7 seconds and SE 1 foot at 12 seconds. A slight chance of showers and tstms this afternoon. .TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 7 seconds and SE 1 foot at 12 seconds. A slight chance of showers and tstms. .WED...E winds 15 to 20 kt. Seas 4 to 6 ft, building to 5 to 6 ft in the afternoon. Wave Detail: E 5 ft at 8 seconds, becoming E 6 ft at 8 seconds. A slight chance of tstms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .WED NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of showers with a slight chance of tstms. .THU...E winds 15 to 20 kt. Seas 5 to 6 ft, building to 5 to 7 ft in the afternoon. Wave Detail: E 6 ft at 9 seconds, becoming E 7 ft at 9 seconds. A slight chance of showers and tstms. .THU NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. A slight chance of tstms. A slight chance of showers in the evening, then a chance of showers after midnight. .FRI...NE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers and tstms. .FRI NIGHT...E winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers and tstms. .SAT...E winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers and tstms. .SAT NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ352-182315- Waters from Edisto Beach SC to Savannah GA out 20 NM- 648 AM EDT Tue Jun 18 2024 .TODAY...E winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft this afternoon. Wave Detail: E 4 ft at 6 seconds and SE 1 foot at 12 seconds. A slight chance of showers late this morning. A chance of showers with a slight chance of tstms this afternoon. .TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 7 seconds and SE 1 foot at 12 seconds. A slight chance of showers and tstms. .WED...E winds 15 to 20 kt. Seas 4 to 6 ft, building to 5 to 6 ft in the afternoon. Wave Detail: E 5 ft at 8 seconds. A chance of showers with a slight chance of tstms. .WED NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of showers with a slight chance of tstms. .THU...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. A chance of showers with a slight chance of tstms. .THU NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 6 ft at 9 seconds. A chance of showers with a slight chance of tstms. .FRI...NE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers and tstms. .FRI NIGHT...E winds 5 to 10 kt. Seas 4 ft. A chance of showers and tstms. .SAT...E winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .SAT NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ354-182315- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 648 AM EDT Tue Jun 18 2024 .TODAY...E winds 15 to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft this afternoon. Wave Detail: E 4 ft at 6 seconds and E 1 foot at 12 seconds. A slight chance of showers late this morning. A chance of showers with a slight chance of tstms this afternoon. .TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 7 seconds and E 1 foot at 12 seconds. A slight chance of tstms. A chance of showers, mainly in the evening. .WED...E winds 15 to 20 kt. Seas 4 to 6 ft, building to 5 to 6 ft in the afternoon. Wave Detail: E 5 ft at 8 seconds, becoming E 6 ft at 8 seconds. A chance of showers with a slight chance of tstms. .WED NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 8 seconds. A chance of showers with a slight chance of tstms. .THU...E winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. A chance of showers with a slight chance of tstms. .THU NIGHT...E winds 20 kt, becoming NE after midnight. Seas 5 to 6 ft. Wave Detail: E 6 ft at 9 seconds. A chance of showers with a slight chance of tstms. .FRI...NE winds 15 kt. Seas 4 to 5 ft. A chance of showers and tstms. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 ft. A chance of showers and tstms. .SAT...E winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .SAT NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ374-182315- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 648 AM EDT Tue Jun 18 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM EDT THIS EVENING THROUGH LATE FRIDAY NIGHT... .TODAY...E winds 15 to 20 kt. Seas 4 to 5 ft, building to 5 to 6 ft this afternoon. Wave Detail: E 4 ft at 7 seconds and E 1 foot at 12 seconds. A slight chance of showers early this morning, then a chance of showers late this morning. A slight chance of tstms this afternoon. .TONIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft. Wave Detail: E 6 ft at 7 seconds and E 1 foot at 12 seconds. A chance of showers with a slight chance of tstms. .WED...E winds 15 to 20 kt. Seas 6 to 7 ft. Wave Detail: E 6 ft at 8 seconds. A chance of showers with a slight chance of tstms. .WED NIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft, building to 6 to 8 ft after midnight. Wave Detail: E 7 ft at 8 seconds. A chance of showers with a slight chance of tstms. .THU...E winds 15 to 20 kt. Seas 7 to 8 ft. Wave Detail: E 8 ft at 8 seconds. A chance of showers with a slight chance of tstms. .THU NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: E 8 ft at 9 seconds, becoming E 7 ft at 9 seconds. A chance of showers with a slight chance of tstms. .FRI...NE winds 10 to 15 kt. Seas 5 to 6 ft. A chance of showers and tstms. .FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers and tstms. .SAT...E winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers and tstms. .SAT NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$