####018005483#### FZUS52 KCHS 150641 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 241 AM EDT Thu May 15 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 AMZ300-151915- 241 AM EDT Thu May 15 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Broad high pressure will remain across the area into the weekend. A weak cold front could approach the region Sunday, with high pressure returning thereafter. $$ AMZ330-151915- Charleston Harbor- 241 AM EDT Thu May 15 2025 .TODAY...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt this afternoon. .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. .FRI...SW winds 5 to 10 kt. .FRI NIGHT...SW winds 5 to 10 kt. .SAT...SW winds 10 to 15 kt. .SAT NIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W 5 to 10 kt after midnight. .SUN...W winds 5 to 10 kt. .SUN NIGHT...W winds 5 kt. .MON...NE winds 5 kt. .MON NIGHT...S winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 76 degrees. $$ AMZ350-151915- Waters from South Santee River to Edisto Beach SC out 20 NM- 241 AM EDT Thu May 15 2025 .TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 7 seconds. .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds. .FRI...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds. .FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. .SAT...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. A slight chance of tstms in the evening. A slight chance of showers. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. .MON...NE winds 5 to 10 kt. Seas 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. Winds and seas higher in and near tstms. $$ AMZ352-151915- Waters from Edisto Beach SC to Savannah GA out 20 NM- 241 AM EDT Thu May 15 2025 .TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 7 seconds. .FRI...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 8 seconds. .FRI NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. .MON...N winds 5 kt. Seas 2 ft. .MON NIGHT...S winds 5 kt. Seas 2 ft. $$ AMZ354-151915- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 241 AM EDT Thu May 15 2025 .TODAY...SW winds 10 kt, becoming S late. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds. A slight chance of showers this morning. .TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 2 ft at 8 seconds. .FRI...W winds 10 to 15 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .FRI NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. .MON...NW winds 5 to 10 kt. Seas 2 ft. .MON NIGHT...S winds 5 to 10 kt. Seas 2 ft. $$ AMZ374-151915- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 241 AM EDT Thu May 15 2025 .TODAY...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft at 7 seconds and SW 2 ft at 4 seconds. .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 8 seconds. .FRI...SW winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds. .FRI NIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 3 seconds. .SAT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SAT NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. .SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 ft. .MON...W winds 5 to 10 kt. Seas 2 ft. .MON NIGHT...S winds 5 kt. Seas 2 ft. $$