Marine Weather Message
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
042 WHUS72 KCHS 120552 MWWCHS URGENT - MARINE WEATHER MESSAGE National Weather Service Charleston SC 152 AM EDT Sun Oct 12 2025 AMZ354-121400- /O.EXP.KCHS.GL.W.0010.000000T0000Z-251012T0600Z/ /O.EXB.KCHS.SC.Y.0055.251012T0600Z-251013T0900Z/ Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 152 AM EDT Sun Oct 12 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT MONDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 5 to 8 ft expected. * WHERE...Savannah to Altamaha Sound out 20 NM. * WHEN...Until 5 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ AMZ350-121200- /O.EXT.KCHS.GL.W.0010.000000T0000Z-251012T1200Z/ Waters from South Santee River to Edisto Beach SC out 20 NM- 152 AM EDT Sun Oct 12 2025 ...GALE WARNING NOW IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Northwest winds 25 to 35 kt with gusts up to 40 kt and seas 7 to 10 ft. * WHERE...South Santee River to Edisto Beach out 20 NM. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ AMZ352-121200- /O.EXT.KCHS.GL.W.0010.000000T0000Z-251012T1200Z/ Waters from Edisto Beach SC to Savannah GA out 20 NM- 152 AM EDT Sun Oct 12 2025 ...GALE WARNING NOW IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Northwest winds 25 to 30 kt with gusts up to 35 kt and seas 6 to 8 ft. * WHERE...Edisto Beach to Savannah out 20 NM. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ AMZ374-121200- /O.EXT.KCHS.GL.W.0010.000000T0000Z-251012T1200Z/ Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 152 AM EDT Sun Oct 12 2025 ...GALE WARNING NOW IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Northwest winds 25 to 30 kt with gusts up to 35 kt and seas 9 to 11 ft. * WHERE...Savannah to Altamaha Sound from 20 to 60 NM. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ AMZ330-121400- /O.CON.KCHS.SC.Y.0055.000000T0000Z-251012T2200Z/ Charleston Harbor- 152 AM EDT Sun Oct 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... * WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt and waves 1 to 2 feet. * WHERE...Charleston Harbor. * WHEN...Until 6 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$