Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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878 FZUS52 KCHS 171944 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 344 PM EDT Tue Sep 17 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 AMZ300-180815- 344 PM EDT Tue Sep 17 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Low pressure across the Carolinas will weaken through mid week. High pressure will then develop inland late this week, and persist into the weekend. $$ AMZ330-180815- Charleston Harbor- 344 PM EDT Tue Sep 17 2024 .TONIGHT...S winds 5 to 10 kt. .WED...S winds 5 to 10 kt. A slight chance of showers and tstms in the afternoon. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. A slight chance of tstms in the evening. A slight chance of showers. .THU...NW winds 5 kt, becoming E in the afternoon. A slight chance of showers. .THU NIGHT...E winds 5 kt, becoming N after midnight. A slight chance of tstms in the evening. A slight chance of showers. .FRI...NE winds 10 to 15 kt with gusts to 20 kt. .FRI NIGHT...NE winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. .SAT...NE winds 10 to 15 kt. .SAT NIGHT...NE winds 10 to 15 kt. .SUN...NE winds 10 to 15 kt. .SUN NIGHT...NE winds 10 to 15 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 77 degrees. $$ AMZ350-180815- Waters from South Santee River to Edisto Beach SC out 20 NM- 344 PM EDT Tue Sep 17 2024 .TONIGHT...SW 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 and SW 2 ft at 3 seconds, becoming E 3 ft at 9 seconds and SW 2 ft at 3 seconds. .WED...SW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 3 seconds. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 1 foot at 3 seconds. A slight chance of showers and tstms. .THU...NW winds 5 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and SW 1 foot at 3 seconds. A slight chance of showers. A slight chance of tstms in the afternoon. .THU NIGHT...E winds 5 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 11 seconds. A slight chance of tstms in the evening. A slight chance of showers. .FRI...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 10 seconds and SW 1 foot at 4 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. .SAT...NE winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .SUN...NE winds 15 kt. Seas 3 to 4 ft. .SUN NIGHT...NE winds 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$ AMZ352-180815- Waters from Edisto Beach SC to Savannah GA out 20 NM- 344 PM EDT Tue Sep 17 2024 .TONIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 1 foot at 3 seconds. A slight chance of showers and tstms in the afternoon. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of showers and tstms. .THU...NW winds 5 to 10 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of showers. A slight chance of tstms in the afternoon. .THU NIGHT...E winds 5 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 11 seconds and S 1 foot at 4 seconds. A slight chance of showers. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and S 1 foot at 4 seconds. .FRI NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .SUN...NE winds 15 kt. Seas 3 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ354-180815- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 344 PM EDT Tue Sep 17 2024 .TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds. .WED...SW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of showers and tstms. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of showers and tstms. .THU...W winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. .THU NIGHT...SE winds 5 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and S 1 foot at 4 seconds. A slight chance of showers. .FRI...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds and S 1 foot at 3 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. .SAT...NE winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .SUN...NE winds 10 to 15 kt. Seas 3 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ374-180815- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 344 PM EDT Tue Sep 17 2024 .TONIGHT...S winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 10 seconds. .WED...SW winds 5 to 10 kt, becoming S in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. A slight chance of showers and tstms. .WED NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. A slight chance of tstms. A slight chance of showers in the evening, then a chance of showers after midnight. .THU...W winds 5 to 10 kt, becoming N in the afternoon. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of showers in the morning. .THU NIGHT...E winds 5 kt, becoming N after midnight. Seas 3 ft. Wave Detail: E 3 ft at 11 seconds and S 1 foot at 4 seconds. A slight chance of showers. .FRI...NE winds 10 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 8 seconds. A slight chance of showers. .FRI NIGHT...NE winds 10 kt. Seas 3 to 4 ft. A slight chance of showers. .SAT...NE winds 15 kt. Seas 3 to 4 ft. A slight chance of showers. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of showers. .SUN...NE winds 15 kt. Seas 4 to 5 ft. A slight chance of showers. .SUN NIGHT...NE winds 15 kt. Seas 4 to 5 ft. A slight chance of showers. Winds and seas higher in and near tstms. $$