729 WHUS72 KCHS 201844 MWWCHS URGENT - MARINE WEATHER MESSAGE National Weather Service Charleston SC 244 PM EDT Thu Mar 20 2025 AMZ374-210245- /O.EXT.KCHS.SC.Y.0027.000000T0000Z-250321T0100Z/ /O.UPG.KCHS.GL.A.0008.250321T0200Z-250321T1200Z/ /O.NEW.KCHS.GL.W.0009.250321T0100Z-250321T1200Z/ Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 244 PM EDT Thu Mar 20 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM EDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 8 AM EDT FRIDAY... * WHAT...For the Small Craft Advisory, southwest winds 20 to 25 kt with gusts up to 30 kt and seas 4 to 6 ft. For the Gale Warning, northwest winds 25 to 30 kt with gusts up to 35 kt and seas 4 to 7 ft expected. * WHERE...Savannah to Altamaha Sound from 20 to 60 NM. * WHEN...For the Small Craft Advisory, until 9 PM EDT this evening. For the Gale Warning, from 9 PM this evening to 8 AM EDT Friday. * 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. && $$ AMZ330-210245- /O.CON.KCHS.SC.Y.0027.000000T0000Z-250321T1200Z/ Charleston Harbor- 244 PM EDT Thu Mar 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT FRIDAY... * WHAT...West winds 15 to 25 kt with gusts up to 30 kt and waves 1 to 2 feet. * WHERE...Charleston Harbor. * WHEN...Until 8 AM EDT Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ AMZ350-210245- /O.CON.KCHS.SC.Y.0027.000000T0000Z-250321T1500Z/ Waters from South Santee River to Edisto Beach SC out 20 NM- 244 PM EDT Thu Mar 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT FRIDAY... * WHAT...West winds 20 to 30 kt and seas 3 to 6 ft. * WHERE...South Santee River to Edisto Beach out 20 NM. * WHEN...Until 11 AM EDT Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ AMZ352-210245- /O.CON.KCHS.SC.Y.0027.000000T0000Z-250321T1500Z/ Waters from Edisto Beach SC to Savannah GA out 20 NM- 244 PM EDT Thu Mar 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT FRIDAY... * WHAT...West winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 ft. * WHERE...Edisto Beach to Savannah out 20 NM. * WHEN...Until 11 AM EDT Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ AMZ354-210245- /O.CON.KCHS.SC.Y.0027.000000T0000Z-250321T1500Z/ Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 244 PM EDT Thu Mar 20 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT FRIDAY... * WHAT...West winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 ft. * WHERE...Savannah to Altamaha Sound out 20 NM. * WHEN...Until 11 AM EDT Friday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$