Marine Weather Message
Issued by NWS Boston, MA
Issued by NWS Boston, MA
480 WHUS71 KBOX 172358 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 658 PM EST Mon Nov 17 2025 ANZ230-236-180600- /O.CAN.KBOX.GL.W.0037.000000T0000Z-251118T0000Z/ /O.NEW.KBOX.SC.Y.0117.251118T0000Z-251118T0600Z/ Boston Harbor-Narragansett Bay- 658 PM EST Mon Nov 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY... ...GALE WARNING IS CANCELLED... * WHAT...West winds 15 to 20 kt with gusts up to 30 kt and waves 2 to 3 feet expected. * WHERE...In Massachusetts coastal waters, Boston Harbor. In Rhode Island coastal waters, Narragansett Bay. * WHEN...Until 1 AM EST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ231-251-181200- /O.CAN.KBOX.GL.W.0036.000000T0000Z-251118T0000Z/ /O.NEW.KBOX.SC.Y.0117.251118T0000Z-251118T1200Z/ Cape Cod Bay-Massachusetts Bay and Ipswich Bay- 658 PM EST Mon Nov 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST TUESDAY... ...GALE WARNING IS CANCELLED... * WHAT...West winds 20 to 25 kt with gusts up to 30 kt and seas 3 to 4 feet expected. * WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay. * WHEN...Until 7 AM EST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ235-237-181300- /O.CAN.KBOX.GL.W.0036.000000T0000Z-251118T0000Z/ /O.NEW.KBOX.SC.Y.0117.251118T0000Z-251118T1800Z/ Rhode Island Sound-Block Island Sound- 658 PM EST Mon Nov 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST TUESDAY... ...GALE WARNING IS CANCELLED... * WHAT...West winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 6 feet expected. * WHERE...Rhode Island Sound and Block Island Sound. * WHEN...Until 1 PM EST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ232-181300- /O.CAN.KBOX.GL.W.0036.000000T0000Z-251118T0000Z/ /O.NEW.KBOX.SC.Y.0117.251118T0000Z-251118T1800Z/ Nantucket Sound- 658 PM EST Mon Nov 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EST TUESDAY... ...GALE WARNING IS CANCELLED... * WHAT...West winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 6 feet expected. * WHERE...Nantucket Sound. * WHEN...Until 1 PM EST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ233-234-181200- /O.CAN.KBOX.GL.W.0036.000000T0000Z-251118T0000Z/ /O.NEW.KBOX.SC.Y.0117.251118T0000Z-251118T1200Z/ Vineyard Sound-Buzzards Bay- 658 PM EST Mon Nov 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST TUESDAY... ...GALE WARNING IS CANCELLED... * WHAT...West winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 feet expected. * WHERE...Vineyard Sound and Buzzards Bay. * WHEN...Until 7 AM EST Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ254>256-180600- /O.CON.KBOX.GL.W.0036.000000T0000Z-251118T0600Z/ Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 658 PM EST Mon Nov 17 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST TUESDAY... * WHAT...Northwest winds 20 to 30 kt with gusts up to 35 kt and seas 7 to 10 feet. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm and Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island. * WHEN...Until 1 AM EST Tuesday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ ANZ250-180600- /O.CON.KBOX.GL.W.0036.000000T0000Z-251118T0600Z/ Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 658 PM EST Mon Nov 17 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST TUESDAY... * WHAT...Northwest winds around 25 kt with gusts up to 30 kt and seas 4 to 7 feet. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...Until 1 AM EST Tuesday. * 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. && $$