Coastal Waters Forecast
Issued by NWS Charleston, SC

Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
934 FZUS52 KCHS 170512 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 112 AM EDT Fri May 17 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 AMZ300-171815- 112 AM EDT Fri May 17 2024 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will persist into Friday. A storm system will affect the area this weekend, followed by high pressure from the north next week. $$ AMZ330-171815- Charleston Harbor- 112 AM EDT Fri May 17 2024 .REST OF TONIGHT...SE winds 5 to 10 kt. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. .FRI NIGHT...S winds 10 to 15 kt. A chance of showers. A slight chance of tstms after midnight. .SAT...SW winds 10 to 15 kt. A chance of tstms. A chance of showers in the morning, then showers likely in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...NW winds 10 to 15 kt, becoming N with gusts to 20 kt after midnight. A chance of tstms. Showers likely, mainly in the evening. .MON...N winds 15 kt. A slight chance of showers. .MON NIGHT...N winds 10 to 15 kt. A slight chance of showers. .TUE...NE winds 10 to 15 kt. .TUE NIGHT...NE winds 10 to 15 kt. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 77 degrees. $$ AMZ350-171815- Waters from South Santee River to Edisto Beach SC out 20 NM- 112 AM EDT Fri May 17 2024 .REST OF TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 6 seconds. .FRI...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 6 seconds and SW 1 foot at 3 seconds. .FRI NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers. A slight chance of tstms after midnight. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 7 seconds. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...W winds 10 to 15 kt, becoming N with gusts to 20 kt after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. A chance of tstms. Showers likely, mainly in the evening. .MON...N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers. .MON NIGHT...N winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of showers. .TUE...NE winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of showers. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ352-171815- Waters from Edisto Beach SC to Savannah GA out 20 NM- 112 AM EDT Fri May 17 2024 .REST OF TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds. .FRI...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 6 seconds. .FRI NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds. A chance of showers. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 9 seconds. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .SUN NIGHT...W winds 10 kt, becoming N after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. A chance of tstms. Showers likely, mainly in the evening. .MON...N winds 15 to 20 kt. Seas 2 to 3 ft. A slight chance of showers. .MON NIGHT...N winds 15 kt. Seas 3 to 4 ft. A slight chance of showers. .TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Winds and seas higher in and near tstms. $$ AMZ354-171815- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 112 AM EDT Fri May 17 2024 .REST OF TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds. .FRI...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 5 seconds. .FRI NIGHT...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. A slight chance of showers in the evening, then a chance of showers after midnight. .SAT...SW winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 9 seconds. A chance of showers with a slight chance of tstms in the morning, then showers likely with a chance of tstms in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 9 seconds. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and E 1 foot at 8 seconds. A chance of tstms. A chance of showers in the morning, then showers likely in the afternoon. .SUN NIGHT...W winds 10 kt, becoming N after midnight. Seas 2 to 3 ft. A chance of tstms. Showers likely, mainly in the evening. .MON...N winds 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .MON NIGHT...N winds 15 kt. Seas 2 to 3 ft. A slight chance of showers. .TUE...NE winds 10 to 15 kt. Seas 2 to 3 ft. .TUE NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. $$ AMZ374-171815- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 112 AM EDT Fri May 17 2024 .REST OF TONIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .FRI...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 3 seconds. .FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds. A slight chance of showers. .SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 9 seconds. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 8 seconds. Showers likely with a chance of tstms. .SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 8 seconds. Showers likely with a chance of tstms. .SUN NIGHT...W winds 10 kt, becoming NW after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. A chance of tstms. Showers likely, mainly in the evening. .MON...N winds 15 kt. Seas 3 to 4 ft. A slight chance of showers. .MON NIGHT...N winds 15 kt. Seas 3 to 4 ft. A chance of showers. .TUE...N winds 15 kt. Seas 4 to 5 ft. A slight chance of showers. .TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. Winds and seas higher in and near tstms. $$