Marine Weather Message
Issued by NWS Boston, MA
Issued by NWS Boston, MA
330 WHUS71 KBOX 300525 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 125 AM EDT Tue Sep 30 2025 ANZ254-255-302300- /O.EXB.KBOX.SC.Y.0096.000000T0000Z-251001T0000Z/ /O.UPG.KBOX.GL.A.0015.251001T0600Z-251002T0600Z/ /O.NEW.KBOX.GL.W.0027.251001T0000Z-251002T0900Z/ Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 125 AM EDT Tue Sep 30 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 AM EDT THURSDAY... * WHAT...For the Small Craft Advisory, north winds 10 to 15 kt with gusts up to 20 kt and seas 5 to 8 feet. For the Gale Warning, northeast winds 20 to 30 kt with gusts up to 35 kt and seas 7 to 12 feet expected. * WHERE...Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm and Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Gale Warning, from 8 PM this evening to 5 AM EDT Thursday. * 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. && $$ ANZ232>234-302300- /O.UPG.KBOX.GL.A.0015.251001T0600Z-251002T0600Z/ /O.NEW.KBOX.GL.W.0027.251001T0000Z-251002T0600Z/ Nantucket Sound-Vineyard Sound-Buzzards Bay- 125 AM EDT Tue Sep 30 2025 ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 2 AM EDT THURSDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 4 to 6 feet expected. * WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay. * WHEN...From 8 PM this evening to 2 AM EDT Thursday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ ANZ231-302300- /O.UPG.KBOX.GL.A.0015.251001T0600Z-251002T0600Z/ /O.NEW.KBOX.GL.W.0027.251001T0000Z-251002T0600Z/ Cape Cod Bay- 125 AM EDT Tue Sep 30 2025 ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 2 AM EDT THURSDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 4 to 7 feet expected. * WHERE...Cape Cod Bay. * WHEN...From 8 PM this evening to 2 AM EDT Thursday. * 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. && $$ ANZ230-302300- /O.EXB.KBOX.SC.Y.0096.251001T0300Z-251002T0000Z/ Boston Harbor- 125 AM EDT Tue Sep 30 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 8 PM EDT WEDNESDAY... * WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 feet expected. * WHERE...Boston Harbor. * WHEN...From 11 PM this evening to 8 PM EDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ250-302300- /O.EXT.KBOX.SC.Y.0096.250930T1800Z-251002T0600Z/ Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 125 AM EDT Tue Sep 30 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 AM EDT THURSDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 10 feet expected. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...From 2 PM this afternoon to 2 AM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ251-302300- /O.EXT.KBOX.SC.Y.0096.251001T0300Z-251002T0600Z/ Massachusetts Bay and Ipswich Bay- 125 AM EDT Tue Sep 30 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 11 PM THIS EVENING TO 2 AM EDT THURSDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 7 feet expected. * WHERE...Massachusetts Bay and Ipswich Bay. * WHEN...From 11 PM this evening to 2 AM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ256-302300- /O.CON.KBOX.SC.Y.0096.000000T0000Z-251002T0600Z/ Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 125 AM EDT Tue Sep 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT THURSDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 12 feet. * WHERE...Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island. * WHEN...Until 2 AM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ235-237-302300- /O.CON.KBOX.SC.Y.0096.250930T0800Z-251002T0600Z/ Rhode Island Sound-Block Island Sound- 125 AM EDT Tue Sep 30 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT THURSDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet expected. * WHERE...Rhode Island Sound and Block Island Sound. * WHEN...Until 2 AM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$