FZUS52 KCHS 161124 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 724 AM 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 AMZ300-170100- 724 AM EDT Fri Oct 16 2026 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will extend across the region this week. A strong cold front will push offshore Friday night 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. $$ AMZ340-170100- Charleston Harbor- 724 AM EDT Fri Oct 16 2026 .TODAY...SW winds 5 to 10 kt, becoming S 10 to 15 kt late. Patchy fog early this morning. .TONIGHT...SW winds 10 kt, becoming W after midnight. .SAT...N winds 15 to 20 kt with gusts to 30 kt. Waves 1 to 2 ft. A slight chance of showers. .SAT NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft. .SUN...NE winds 20 to 25 kt with gusts to 30 kt. Waves 2 to 3 ft. .SUN NIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt after midnight. Waves 2 to 3 ft. .MON...N winds 15 to 20 kt. Waves 1 to 2 ft. .MON NIGHT...N winds 15 to 20 kt. Waves 1 to 2 ft. .TUE...N winds 10 to 15 kt. .TUE NIGHT...N winds 10 kt. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 77 degrees. $$ AMZ360-170100- Coastal waters from South Santee River to Edisto Beach SC out 20 NM- 724 AM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... ...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt this afternoon. Seas 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 8 seconds. .TONIGHT...SW winds 15 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 9 seconds. .SAT...N winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 4 to 5 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 NE 6 ft at 9 seconds and NW 5 ft at 5 seconds. A slight 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. A slight chance of showers in the evening. .SUN...NE winds 30 kt with gusts to 40 kt. Seas 7 to 9 ft, building to 8 to 10 ft in the afternoon. Wave Detail: NE 9 ft at 7 seconds, becoming NE 10 ft at 8 seconds. A slight chance of showers. .SUN NIGHT...NE winds 25 to 30 kt with gusts to 40 kt. Seas 9 to 11 ft. Wave Detail: NE 10 ft at 8 seconds. A slight chance of showers in the evening. .MON...N winds 25 to 30 kt. Seas 8 to 10 ft. .MON NIGHT...N winds 25 to 30 kt. Seas 7 to 9 ft. .TUE...N winds 20 to 25 kt. Seas 6 to 8 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft. $$ AMZ362-170100- Coastal waters from Edisto Beach SC to Savannah GA out 20 NM- 724 AM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... ...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt late. Seas 2 ft. Wave Detail: SE 2 ft at 9 seconds and S 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds. .SAT...N winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 3 to 4 ft, building to 4 to 6 ft in the afternoon. Wave Detail: NW 4 ft at 4 seconds and E 1 foot at 9 seconds,becoming NE 6 ft at 9 seconds and N 5 ft at 4 seconds. A slight chance of showers. .SAT NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 5 to 7 ft, building to 7 to 9 ft after midnight. Wave Detail: NE 7 ft at 6 seconds, becoming NE 8 ft at 7 seconds. .SUN...NE winds 25 to 30 kt with gusts to 40 kt. Seas 7 to 9 ft, building to 8 to 10 ft in the afternoon. Wave Detail: NE 9 ft at 7 seconds, becoming NE 9 ft at 8 seconds. .SUN NIGHT...NE winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft, building to 9 to 11 ft after midnight. Wave Detail: NE 10 ft at 8 seconds, becoming NE 11 ft at 9 seconds. A slight chance of showers in the evening. .MON...N winds 25 to 30 kt. Seas 8 to 10 ft. .MON NIGHT...N winds 25 to 30 kt. Seas 8 to 10 ft. .TUE...N winds 20 to 25 kt. Seas 6 to 8 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft. $$ AMZ364-170100- Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm, including Grays Reef National Marine Sanctuary- 724 AM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... ...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE MONDAY NIGHT... .TODAY...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at 8 seconds and S 1 foot at 3 seconds. .TONIGHT...S winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E 1 foot at 8 seconds. .SAT...N winds 20 to 25 kt, increasing to 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 NE 6 ft at 9 seconds and N 5 ft at 4 seconds. A slight chance of showers. .SAT NIGHT...NE 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...NE winds 30 to 35 kt. Seas 7 to 9 ft, building to 8 to 10 ft in the afternoon. Wave Detail: NE 9 ft at 8 seconds, becoming NE 10 ft at 8 seconds. .SUN NIGHT...NE winds 30 to 35 kt with gusts to 45 kt. Seas 9 to 11 ft, building to 9 to 12 ft after midnight. Wave Detail: NE 11 ft at 8 seconds, becoming NE 12 ft at 9 seconds. A slight chance of showers. .MON...N winds 25 to 30 kt. Seas 9 to 11 ft. .MON NIGHT...N winds 25 to 35 kt. Seas 9 to 11 ft. .TUE...N winds 20 to 25 kt. Seas 7 to 9 ft. .TUE NIGHT...N winds 15 to 20 kt. Seas 6 to 8 ft. $$ AMZ380-170100- Waters from South Santee River SC to Edisto Beach SC extending from 20 to 60 NM- 724 AM EDT Fri Oct 16 2026 ...GALE WATCH IN EFFECT FROM SATURDAY MORNING THROUGH TUESDAY MORNING... .TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 9 seconds. A slight chance of showers late this morning. .TONIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .SAT...N winds 25 to 30 kt. Seas 4 to 6 ft, building to 6 to 8 ft in the afternoon. Wave Detail: NW 5 ft at 5 seconds and E 2 ft at 9 seconds, becoming NE 8 ft at 9 seconds and N 7 ft at 6 seconds. A chance of showers, mainly in the morning. .SAT NIGHT...N winds 30 kt with gusts to 40 kt. Seas 8 to 10 ft, building to 9 to 12 ft after midnight. Wave Detail: N 10 ft at 7 seconds, becoming NE 12 ft at 8 seconds. A slight chance of showers. .SUN...NE winds 30 to 35 kt with gusts to 45 kt. Seas 10 to 13 ft, building to 11 to 14 ft in the afternoon. Wave Detail: NE 13 ft at 8 seconds, becoming NE 14 ft at 9 seconds. A slight chance of showers in the morning, then a chance of showers in the afternoon. .SUN NIGHT...NE winds 30 to 35 kt with gusts to 45 kt. Seas 12 to 15 ft. Wave Detail: NE 14 ft at 10 seconds. A chance of showers. .MON...N winds 30 kt. Seas 12 to 14 ft. A slight chance of showers. .MON NIGHT...N winds 25 to 30 kt. Seas 10 to 14 ft. A slight chance of showers. .TUE...N winds 20 to 25 kt. Seas 8 to 10 ft. .TUE NIGHT...N winds 20 to 25 kt. Seas 7 to 9 ft. $$ AMZ382-170100- Waters from Edisto Beach SC to Savannah GA extending from 20 to 60 NM- 724 AM EDT Fri Oct 16 2026 ...GALE WATCH IN EFFECT FROM SATURDAY MORNING THROUGH TUESDAY MORNING... .TODAY...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 9 seconds. A slight chance of showers this morning. .TONIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 9 seconds, becoming SW 3 ft at 4 seconds and E 2 ft at 9 seconds. .SAT...N winds 25 to 30 kt. Seas 4 to 6 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 N 8 ft at 6 seconds and E 8 ft at 9 seconds. A chance of showers, mainly in the morning. .SAT NIGHT...NE 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. A slight chance of showers. .SUN...NE winds 30 to 35 kt with gusts to 45 kt. Seas 10 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. .SUN NIGHT...NE winds 30 to 35 kt with gusts to 45 kt. Seas 11 to 15 ft, building to 12 to 15 ft after midnight. Wave Detail: NE 15 ft at 9 seconds. A slight chance of showers. .MON...N winds 30 kt. Seas 11 to 14 ft. A slight chance of showers. .MON NIGHT...N winds 25 to 30 kt. Seas 10 to 14 ft. .TUE...N winds 20 to 25 kt. Seas 8 to 10 ft. .TUE NIGHT...N winds 20 to 25 kt. Seas 7 to 9 ft. $$ AMZ384-170100- Waters from Savannah GA to Altamaha Sound GA extending from 20 to 60 NM- 724 AM EDT Fri Oct 16 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... ...GALE WATCH IN EFFECT FROM SATURDAY MORNING THROUGH TUESDAY MORNING... .TODAY...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at 3 seconds. .TONIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 9 seconds, becoming SW 3 ft at 4 seconds and E 2 ft at 9 seconds. .SAT...N winds 20 to 25 kt, increasing to 25 to 30 kt in the afternoon. Seas 4 to 6 ft, building to 6 to 8 ft in the afternoon. Wave Detail: NW 5 ft at 5 seconds and E 2 ft at 9 seconds, becoming N 8 ft at 6 seconds and E 7 ft at 9 seconds. A chance of showers, mainly in the morning. .SAT NIGHT...NE winds 30 to 35 kt with gusts to 45 kt. Seas 8 to 10 ft, building to 9 to 12 ft after midnight. Wave Detail: N 10 ft at 7 seconds, becoming NE 12 ft at 8 seconds. A slight chance of showers. .SUN...NE winds 30 to 35 kt. Seas 10 to 12 ft, building to 10 to 13 ft in the afternoon. Wave Detail: NE 11 ft at 8 seconds, becoming NE 13 ft at 9 seconds. A slight chance of showers. .SUN NIGHT...NE winds 30 to 35 kt with gusts to 45 kt. Seas 11 to 15 ft, building to 13 to 15 ft after midnight. Wave Detail: NE 14 ft at 9 seconds, becoming NE 15 ft at 10 seconds and E 5 ft at 12 seconds. A slight chance of showers. .MON...NE winds 30 kt. Seas 12 to 15 ft. A slight chance of showers. .MON NIGHT...N winds 25 to 35 kt. Seas 11 to 14 ft. A slight chance of showers. .TUE...N winds 20 to 25 kt. Seas 9 to 11 ft. .TUE NIGHT...NE winds 20 to 25 kt. Seas 8 to 10 ft. $$