


Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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949 FZUS52 KCHS 110145 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 945 PM EDT Fri Oct 10 2025 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 AMZ300-111400- 945 PM EDT Fri Oct 10 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will prevail inland through early next week. Meanwhile, a coastal low will linger through Saturday before lifting north and eastward along the Atlantic coast. $$ AMZ330-111400- Charleston Harbor- 945 PM EDT Fri Oct 10 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SATURDAY NIGHT... .TONIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Waves 2 to 3 ft. Showers with a chance of tstms until early morning, then showers likely late. .SAT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. Showers. .SAT NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. Showers likely, mainly in the evening. .SUN...N winds 15 kt with gusts to 20 kt. A chance of showers. .SUN NIGHT...N winds 10 to 15 kt. A chance of showers, mainly in the evening. .MON...NW winds 10 to 15 kt. .MON NIGHT...N winds 5 to 10 kt. .TUE...N winds 10 to 15 kt. .TUE NIGHT...N winds 5 to 10 kt. .WED...N winds 10 kt. .WED NIGHT...N winds 5 to 10 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 74 degrees. $$ AMZ350-111400- Waters from South Santee River to Edisto Beach SC out 20 NM- 945 PM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...NE winds 25 to 30 kt. Seas 8 to 10 ft. Wave Detail: E 10 ft at 9 seconds. Showers. A chance of tstms until early morning, then a slight chance of tstms late. .SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 10 seconds. Showers with a slight chance of tstms in the morning, then showers likely in the afternoon with vsby 1 to 3 NM. .SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 9 seconds. A slight chance of tstms. A chance of showers. .SUN...N winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft, subsiding to 6 to 8 ft in the afternoon. Wave Detail: NE 8 ft at 10 seconds, becoming NE 7 ft at 10 seconds. A slight chance of tstms in the morning. A chance of showers. .SUN NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: NE 6 ft at 10 seconds. A chance of showers, mainly in the evening. .MON...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 5 to 6 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: NE 6 ft at 10 seconds, becoming NE 5 ft at 9 seconds. A slight chance of showers in the morning. .MON NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. .TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .WED...N winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$ AMZ352-111400- Waters from Edisto Beach SC to Savannah GA out 20 NM- 945 PM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...NE winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 8 seconds. Showers. A chance of tstms until early morning, then a slight chance of tstms late. .SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 10 seconds. Showers likely, mainly in the morning. .SAT NIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: NE 9 ft at 9 seconds, becoming NE 8 ft at 10 seconds. A chance of showers with a slight chance of tstms. .SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: E 7 ft at 10 seconds. A chance of showers. .SUN NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 5 to 6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 6 ft at 10 seconds, becoming E 5 ft at 12 seconds. A chance of showers, mainly in the evening. .MON...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 12 seconds. .MON NIGHT...NW winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight. .TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 3 ft. .WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ354-111400- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 945 PM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH SATURDAY EVENING... .TONIGHT...NE winds 25 to 30 kt. Seas 7 to 8 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: E 8 ft at 8 seconds. Showers with a chance of tstms until early morning, then showers likely with a slight chance of tstms late. .SAT...N winds 25 to 30 kt. Seas 7 to 9 ft. Wave Detail: E 9 ft at 10 seconds. Showers likely with a slight chance of tstms in the morning, then a chance of showers in the afternoon. .SAT NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: NE 9 ft at 10 seconds, becoming NE 8 ft at 10 seconds. A chance of showers. A slight chance of tstms after midnight. .SUN...N winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: NE 7 ft at 10 seconds. A slight chance of tstms. A chance of showers, mainly in the morning. .SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 6 ft. Wave Detail: NE 6 ft at 10 seconds. A slight chance of showers. .MON...N winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E 5 ft at 12 seconds. .MON NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. .TUE...N winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ374-111400- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 945 PM EDT Fri Oct 10 2025 ...GALE WARNING IN EFFECT THROUGH LATE SATURDAY NIGHT... .TONIGHT...NE winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 8 to 9 ft. Wave Detail: NE 9 ft at 8 seconds. Showers with a chance of tstms until early morning, then showers with a slight chance of tstms late. Vsby 1 to 3 NM early this evening. .SAT...N winds 25 to 30 kt. Seas 9 to 11 ft. Wave Detail: NE 11 ft at 10 seconds. A slight chance of tstms. Showers, mainly in the morning. .SAT NIGHT...N winds 25 to 30 kt. Seas 9 to 12 ft, subsiding to 9 to 11 ft after midnight. Wave Detail: N 11 ft at 9 seconds, becoming NE 11 ft at 10 seconds. A chance of showers with a slight chance of tstms. .SUN...N winds 20 to 25 kt with gusts to 30 kt. Seas 8 to 10 ft, subsiding to 7 to 9 ft in the afternoon. Wave Detail: NE 9 ft at 10 seconds. A chance of showers with a slight chance of tstms. .SUN NIGHT...N winds 15 to 20 kt with gusts to 25 kt. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. Wave Detail: NE 8 ft at 10 seconds, becoming NE 8 ft at 11 seconds. A chance of showers, mainly in the evening. .MON...N winds 10 to 15 kt with gusts to 20 kt. Seas 6 to 7 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: NE 7 ft at 11 seconds, becoming NE 7 ft at 10 seconds. .MON NIGHT...N winds 10 to 15 kt. Seas 5 to 6 ft. .TUE...N winds 10 to 15 kt. Seas 4 to 5 ft. .TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft. .WED...N winds 10 to 15 kt. Seas 4 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$