FZUS52 KCHS 162139 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 539 PM EDT Fri Oct 16 2026 South Santee River SC to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary AMZ300-171100- 539 PM EDT Fri Oct 16 2026 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... A strong cold front will push offshore tonight into Saturday morning. Significant wind and sea conditions expected across the nearshore and outer Georgia and South Carolina waters this weekend into early next week. $$ AMZ340-171100- Charleston Harbor- 539 PM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH MONDAY AFTERNOON... .TONIGHT...SW winds 10 to 15 kt, becoming W late. .SAT...NW winds 15 to 20 kt, becoming N 20 to 25 kt in the afternoon. Waves 2 to 3 ft. A chance of showers, mainly in the morning. .SAT NIGHT...N winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Waves 2 to 3 ft. .SUN...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft. .SUN NIGHT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. .MON...N winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. .MON NIGHT...N winds 10 to 15 kt. .TUE...N winds 10 kt. .TUE NIGHT...N winds 10 kt. .WED...N winds 10 kt. .WED NIGHT...N winds 10 to 15 kt. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 78 degrees. $$ AMZ360-171100- Coastal waters from South Santee River to Edisto Beach SC out 20 NM- 539 PM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT SATURDAY MORNING... ...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TONIGHT...SW winds 15 kt with gusts to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 9 seconds, becoming SW 3 ft at 5 seconds and E 1 foot at 9 seconds. .SAT...NW winds 20 to 25 kt, becoming N 25 to 30 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 9 seconds, becoming E 6 ft at 9 seconds and NW 5 ft at 5 seconds. A chance of showers. .SAT NIGHT...N winds 30 kt with gusts to 40 kt. Seas 6 to 8 ft, building to 7 to 9 ft after midnight. Wave Detail: NE 7 ft at 6 seconds, becoming NE 8 ft at 7 seconds. .SUN...N winds 30 kt with gusts to 40 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 7 seconds. A slight chance of showers in the afternoon. .SUN NIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 8 to 10 ft. Wave Detail: NE 10 ft at 8 seconds and E 4 ft at 14 seconds. A slight chance of showers in the evening. .MON...N winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Seas 8 to 10 ft, subsiding to 7 to 9 ft in the afternoon. Wave Detail: NE 9 ft at 9 seconds and E 6 ft at 14 seconds, becoming NE 7 ft at 7 seconds and E 6 ft at 14 seconds. .MON NIGHT...N winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 6 to 8 ft, subsiding to 5 to 7 ft after midnight. .TUE...N winds 15 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. .WED...N winds 15 to 20 kt. Seas 4 to 5 ft. .WED NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft. $$ AMZ362-171100- Coastal waters from Edisto Beach SC to Savannah GA out 20 NM- 539 PM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT SATURDAY MORNING... ...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W with gusts to 20 kt late. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds. .SAT...NW winds 20 to 25 kt, becoming N 25 to 30 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in theafternoon. Wave Detail: NW 4 ft at 4 seconds and E 1 foot at 9 seconds, becoming E 6 ft at 9 seconds and N 5 ft at 4 seconds. A chance of showers in the morning. .SAT NIGHT...N winds 30 kt with gusts to 40 kt. Seas 5 to 7 ft, building to 6 to 8 ft after midnight. Wave Detail: NE 7 ft at 6 seconds, becoming NE 8 ft at 7 seconds. .SUN...N winds 25 to 30 kt. Seas 6 to 8 ft, building to 7 to 9 ft in the afternoon. Wave Detail: NE 8 ft at 7 seconds. .SUN NIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 7 to 9 ft, building to 8 to 10 ft after midnight. Wave Detail: NE 9 ft at 8 seconds, becoming NE 9 ft at 9 seconds. .MON...N winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 9 seconds and E 6 ft at 14 seconds. .MON NIGHT...N winds 20 to 25 kt, diminishing to 15 to 20 kt after midnight. Seas 6 to 8 ft, subsiding to 5 to 7 ft after midnight. .TUE...N winds 15 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 3 to 4 ft. .WED...N winds 15 to 20 kt. Seas 3 to 4 ft. .WED NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. $$ AMZ364-171100- Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary- 539 PM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT SATURDAY MORNING... ...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W with gusts to 20 kt late. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 2 ft at 8 seconds. .SAT...NW winds 20 to 25 kt, becoming N 25 to 30 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: NW 4 ft at 4 seconds and E 1 foot at 9 seconds, becoming E 6 ft at 9 seconds and N 5 ft at 4 seconds. A slight chance of showers in the morning. .SAT NIGHT...N winds 30 to 35 kt. Seas 6 to 8 ft, building to 7 to 9 ft after midnight. Wave Detail: NE 8 ft at 6 seconds, becoming NE 9 ft at 7 seconds. .SUN...N winds 25 to 30 kt with gusts to 40 kt. Seas 7 to 9 ft. Wave Detail: NE 9 ft at 7 seconds. .SUN NIGHT...N winds 25 to 30 kt with gusts to 40 kt. Seas 8 to 10 ft. Wave Detail: NE 10 ft at 8 seconds. .MON...N winds 25 to 30 kt, diminishing to 20 to 25 kt in the afternoon. Seas 8 to 10 ft, subsiding to 7 to 9 ft in the afternoon. Wave Detail: NE 9 ft at 10 seconds and E 3 ft at 13 seconds, becoming NE 9 ft at 10 seconds and E 4 ft at 14 seconds. .MON NIGHT...N winds 20 to 25 kt. Seas 7 to 9 ft, subsiding to 6 to 8 ft after midnight. .TUE...N winds 15 to 20 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. .WED...N winds 15 to 20 kt. Seas 4 to 5 ft. .WED NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. $$ AMZ380-171100- Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM- 539 PM EDT Fri Oct 16 2026 ...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds, becoming SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .SAT...NW winds 20 to 25 kt, becoming N 25 to 30 kt in the afternoon. Seas 4 to 5 ft, building to 6 to 8 ft in the afternoon. Wave Detail: W 4 ft at 5 seconds and E 2 ft at 9 seconds, becoming N 8 ft at 6 seconds and E 2 ft at 9 seconds. A chance of showers in the morning, then showers likely in the afternoon. .SAT NIGHT...N winds 30 to 35 kt. Seas 8 to 10 ft, building to 9 to 12 ft after midnight. Wave Detail: N 10 ft at 7 seconds and W 8 ft at 6 seconds, becoming N 12 ft at 8 seconds. A slight chance of showers. .SUN...N winds 30 to 35 kt with gusts to 45 kt. Seas 10 to 14 ft, building to 11 to 15 ft in the afternoon. Wave Detail: NE 13 ft at 8 seconds, becoming NE 14 ft at 9 seconds. A chance of showers. .SUN NIGHT...N winds 30 to 35 kt with gusts to 45 kt. Seas 12 to 16 ft. Wave Detail: NE 14 ft at 9 seconds and NE 14 ft at 14 seconds. A chance of showers, mainly in the evening. .MON...N winds 25 to 30 kt with gusts to 40 kt. Seas 11 to 15 ft, subsiding to 10 to 14 ft in the afternoon. Wave Detail: NE 14 ft at 14 seconds, becoming NE 12 ft at 14 seconds and NE 9 ft at 7 seconds. A slight chance of showers. .MON NIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 9 to 12 ft, subsiding to 8 to 10 ft after midnight. A slight chance of showers in the evening. .TUE...N winds 15 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...N winds 20 kt. Seas 5 to 7 ft. .WED...N winds 20 kt. Seas 6 to 8 ft. .WED NIGHT...N winds 20 to 25 kt. Seas 7 to 9 ft. A slight chance of showers. $$ AMZ382-171100- Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM- 539 PM EDT Fri Oct 16 2026 ...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds, becoming SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .SAT...NW winds 20 to 25 kt with gusts to 30 kt, becoming N 25 to 30 kt with gusts to 40 kt in the afternoon. Seas 4 to 5 ft, building to 6 to 8 ft in the afternoon. Wave Detail: NW 5 ft at 5 seconds and E 2 ft at 9 seconds, becoming NW 8 ft at 6 seconds and E 2 ft at 9 seconds. A chance of showers, mainly in the morning. .SAT NIGHT...N winds 30 to 35 kt with gusts to 45 kt. Seas 8 to 10 ft, building to 9 to 12 ft after midnight. Wave Detail: N 10 ft at 7 seconds, becoming NE 11 ft at 8 seconds. .SUN...N winds 30 to 35 kt with gusts to 45 kt. Seas 9 to 12 ft, building to 10 to 14 ft in the afternoon. Wave Detail: NE 12 ft at 8 seconds, becoming NE 13 ft at 9 seconds. A slight chance of showers in the afternoon. .SUN NIGHT...N winds 30 to 35 kt with gusts to 45 kt. Seas 10 to 14 ft, building to 11 to 14 ft after midnight. Wave Detail: NE 14 ft at 9 seconds. A slight chance of showers. .MON...N winds 25 to 30 kt with gusts to 40 kt. Seas 10 to 14 ft, subsiding to 9 to 13 ft in the afternoon. Wave Detail: NE 12 ft at 9 seconds and E 11 ft at 14 seconds, becoming NE 11 ft at 14 seconds. A slight chance of showers. .MON NIGHT...N winds 20 to 25 kt with gusts to 35 kt. Seas 9 to 11 ft, subsiding to 8 to 10 ft after midnight. A slight chance of showers in the evening. .TUE...N winds 15 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 5 to 6 ft. .WED...N winds 15 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...N winds 15 to 20 kt. Seas 6 to 8 ft. $$ AMZ384-171100- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM- 539 PM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT SATURDAY MORNING... ...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TONIGHT...S winds 10 kt, becoming SW with gusts to 20 kt late this evening, then becoming W with gusts to 20 kt late. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds, becoming SW 3 ft at 4 seconds and E 2 ft at 9 seconds. .SAT...NW winds 20 to 25 kt, becoming N 25 to 30 kt in the afternoon. Seas 4 to 5 ft, building to 6 to 8 ft in the afternoon. Wave Detail: NW 5 ft at 5 seconds and E 2 ft at 9 seconds, becoming NW 7 ft at 6 seconds and E 1 foot at 9 seconds. A chance of showers, mainly in the morning. .SAT NIGHT...N winds 30 to 35 kt with gusts to 45 kt. Seas 8 to 10 ft, building to 9 to 12 ft after midnight. Wave Detail: N 10 ft at 9 seconds and N 8 ft at 6 seconds, becoming NE 12 ft at 8 seconds. .SUN...N winds 30 kt with gusts to 40 kt. Seas 10 to 12 ft. Wave Detail: NE 12 ft at 8 seconds. A slight chance of showers in the afternoon. .SUN NIGHT...NE winds 30 to 35 kt with gusts to 45 kt. Seas 10 to 14 ft, building to 11 to 14 ft after midnight. Wave Detail: NE 14 ft at 9 seconds, becoming NE 14 ft at 9 seconds and E 4 ft at 13 seconds. A slight chance of showers. .MON...N winds 25 to 30 kt. Seas 10 to 14 ft, subsiding to 10 to 13 ft in the afternoon. Wave Detail: NE 12 ft at 10 seconds and E 5 ft at 14 seconds, becoming NE 11 ft at 9 seconds and E 8 ft at 14 seconds. A slight chance of showers. .MON NIGHT...N winds 25 to 30 kt, diminishing to 20 to 25 kt after midnight. Seas 9 to 12 ft, subsiding to 9 to 11 ft after midnight. A slight chance of showers in the evening. .TUE...N winds 15 to 20 kt. Seas 7 to 9 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft. .WED...N winds 15 to 20 kt. Seas 5 to 6 ft. .WED NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft. $$