Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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071 FZUS52 KCHS 181914 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 314 PM EDT Wed Sep 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 AMZ300-190815- 314 PM EDT Wed Sep 18 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Weak high pressure will develop over the region on Thursday. The area of high pressure is expected to gradually strengthen through early next week. $$ AMZ330-190815- Charleston Harbor- 314 PM EDT Wed Sep 18 2024 .TONIGHT...SE winds 10 kt, becoming NW 5 kt late. A chance of showers and thunderstorms this evening, then a slight chance of showers after midnight. .THU...N winds 5 kt, becoming E in the afternoon. A chance of showers with a slight chance of tstms in the afternoon. .THU NIGHT...E winds 5 kt, becoming N after midnight. A slight chance of showers and tstms in the evening. .FRI...NE winds 5 to 10 kt. A slight chance of showers and tstms in the afternoon. .FRI NIGHT...NE winds 5 to 10 kt. .SAT...NE winds 5 to 10 kt. .SAT NIGHT...E winds 5 to 10 kt. .SUN...NE winds 5 to 10 kt. .SUN NIGHT...SE winds 5 to 10 kt. .MON...NE winds 10 kt. .MON NIGHT...NE winds 10 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 77 degrees. $$ AMZ350-190815- Waters from South Santee River to Edisto Beach SC out 20 NM- 314 PM EDT Wed Sep 18 2024 .TONIGHT...S winds 5 to 10 kt, becoming W late. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of tstms early this evening. A slight chance of showers. .THU...NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds. A slight chance of showers in the morning, then a chance of showers with a slight chance of tstms in the afternoon. .THU NIGHT...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 11 seconds. A slight chance of showers and tstms in the evening. .FRI...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 10 seconds. .FRI NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 10 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 2 ft at 10 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. .MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...NE winds 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$ AMZ352-190815- Waters from Edisto Beach SC to Savannah GA out 20 NM- 314 PM EDT Wed Sep 18 2024 .TONIGHT...S winds 5 kt, becoming W after midnight. Seas 2 ft. Wave Detail: E 2 ft at 9 seconds. A chance of showers and tstms early this evening, then a slight chance of showers late this evening. .THU...Variable winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A slight chance of showers and tstms in the afternoon. .THU NIGHT...E winds 5 kt, becoming NW after midnight. Seas 2 ft. Wave Detail: E 2 ft at 11 seconds. A slight chance of showers and tstms in the evening. .FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 4 seconds. .FRI NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and E 2 ft at 10 seconds. .SAT...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 10 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NE winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ354-190815- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 314 PM EDT Wed Sep 18 2024 .TONIGHT...S winds 5 to 10 kt, becoming SW after midnight, then W late. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. A chance of showers and tstms early this evening, then a slight chance of showers late this evening. .THU...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds. .THU NIGHT...SE winds 5 kt, becoming NW after midnight. Seas 2 ft. Wave Detail: E 2 ft at 11 seconds. .FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 10 seconds and NE 2 ft at 4 seconds. .FRI NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 10 seconds. .SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and E 2 ft at 10 seconds. .SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. .SUN...NE winds 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .MON...NE winds 10 to 15 kt. Seas 2 to 3 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ374-190815- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 314 PM EDT Wed Sep 18 2024 .TONIGHT...S winds 5 to 10 kt, becoming W late. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds. A slight chance of showers and tstms early this evening. A slight chance of showers after midnight, then a chance of showers late. .THU...NW winds 5 to 10 kt, becoming N in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 10 seconds. .THU NIGHT...NE winds 5 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 11 seconds. .FRI...N winds 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 10 seconds and N 2 ft at 3 seconds. .FRI NIGHT...NE winds 10 kt. Seas 3 ft. Wave Detail: NE 3 ft at 4 seconds and E 3 ft at 10 seconds. .SAT...NE winds 10 to 15 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Wave Detail: NE 3 ft at 5 seconds and E 3 ft at 10 seconds, becoming NE 4 ft at 5 seconds and E 2 ft at 9 seconds. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 kt. Seas 3 to 4 ft. .MON...NE winds 10 to 15 kt. Seas 4 to 5 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Winds and seas higher in and near tstms. $$