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
377 FZUS52 KCHS 142033 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 333 PM EST Tue Jan 14 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 AMZ300-150915- 333 PM EST Tue Jan 14 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will prevail through the week. Another low pressure system and associated cold front will impact the region this weekend. $$ AMZ330-150915- Charleston Harbor- 333 PM EST Tue Jan 14 2025 .TONIGHT...NW winds 5 to 10 kt. .WED...N winds 10 kt. .WED NIGHT...N winds 5 kt. .THU...W winds 5 to 10 kt, increasing to 15 kt with gusts to 20 kt in the afternoon. .THU NIGHT...W winds 10 to 15 kt. .FRI...N winds 5 to 10 kt, becoming E in the afternoon. .FRI NIGHT...S winds 5 kt. .SAT...SW winds 5 to 10 kt. Showers. .SAT NIGHT...SW winds 10 kt. Showers. .SUN...W winds 10 kt. A chance of showers. .SUN NIGHT...NW winds 10 kt. A chance of showers. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 50 degrees. $$ AMZ350-150915- Waters from South Santee River to Edisto Beach SC out 20 NM- 333 PM EST Tue Jan 14 2025 .TONIGHT...NW winds 5 to 10 kt, increasing to 15 to 20 kt late. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and NE 2 ft at 7 seconds. .WED...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and E 2 ft at 9 seconds. .WED NIGHT...NW winds 5 to 10 kt. Seas 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 6 seconds, becoming W 1 foot at 2 seconds and NE 1 foot at 7 seconds. .THU...W winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon. Wave Detail: W 2 ft at 3 seconds and NE 1 foot at 7 seconds, becoming SW 3 ft at 4 seconds and E 1 foot at 7 seconds. .THU NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 1 foot at 8 seconds. .FRI...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers. .SAT NIGHT...SW winds 15 kt. Seas 4 to 5 ft. Showers. .SUN...W winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers. .SUN NIGHT...NW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers. $$ AMZ352-150915- Waters from Edisto Beach SC to Savannah GA out 20 NM- 333 PM EST Tue Jan 14 2025 .TONIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 8 seconds. .WED...N winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 8 seconds. .WED NIGHT...NW winds 5 kt, becoming W after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: NE 1 foot at 8 seconds, becoming NE 2 ft at 8 seconds and NW 1 foot at 3 seconds. .THU...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and NE 1 foot at 8 seconds. .THU NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 8 seconds. .FRI...NW winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 1 to 2 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot at 8 seconds, becoming SW 1 foot at 4 seconds and E 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .SAT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers. .SAT NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. Showers. .SUN...W winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. .SUN NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. $$ AMZ354-150915- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 333 PM EST Tue Jan 14 2025 .TONIGHT...NW winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and N 2 ft at 7 seconds. .WED...N winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and E 2 ft at 10 seconds. .WED NIGHT...N winds 5 kt, becoming W after midnight. Seas 2 ft in the evening, then 1 foot or less. Wave Detail: NE 2 ft at 8 seconds, becoming NW 1 foot at 2 seconds and NE 1 foot at 8 seconds. .THU...W winds 10 to 15 kt. Seas 2 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 8 seconds. .THU NIGHT...W winds 10 to 15 kt with gusts to 20 kt. Seas 2 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 9 seconds. .FRI...NW winds 10 to 15 kt, becoming NE 5 kt in the afternoon. Seas 1 to 2 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 8 seconds, becoming W 1 foot at 3 seconds and E 1 foot at 8 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. .SAT...S winds 10 to 15 kt. Seas 3 to 4 ft. Showers. .SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers. .SUN...W winds 10 kt. Seas 3 to 4 ft. A chance of showers. .SUN NIGHT...NW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. $$ AMZ374-150915- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 333 PM EST Tue Jan 14 2025 .TONIGHT...NW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: N 3 ft at 4 seconds and NE 2 ft at 12 seconds, becoming NW 3 ft at 4 seconds and E 2 ft at 11 seconds. .WED...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 4 to 5 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: N 3 ft at 4 seconds and E 2 ft at 12 seconds, becoming N 3 ft at 4 seconds and NE 3 ft at 10 seconds. .WED NIGHT...N winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 8 seconds and NW 2 ft at 3 seconds. .THU...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 2 ft at 8 seconds. .THU NIGHT...W winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 4 seconds and E 2 ft at 8 seconds. .FRI...NW winds 10 to 15 kt with gusts to 20 kt, becoming N 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 2 ft at 8 seconds. .FRI NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt after midnight. Seas 1 foot or less, then around 2 ft after midnight. .SAT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers. .SAT NIGHT...SW winds 15 to 20 kt. Seas 4 to 6 ft. Showers. .SUN...W winds 10 to 15 kt. Seas 4 to 6 ft. Showers likely. .SUN NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers. $$