WHUS71 KBOX 042309

MWWBOX



URGENT - MARINE WEATHER MESSAGE

National Weather Service Boston/Norton MA

709 PM EDT Mon May 4 2026



ANZ231>234-051215-

/O.EXP.KBOX.GL.W.0015.000000T0000Z-260504T2300Z/

/O.CON.KBOX.GL.W.0016.260505T1500Z-260506T0300Z/

Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-

709 PM EDT Mon May 4 2026



...GALE WARNING REMAINS IN EFFECT FROM 11 AM TO 11 PM EDT

TUESDAY...

...GALE WARNING HAS EXPIRED...



* WHAT...Southwest winds 15 to 25 kt with gusts up to 40 kt and 

  seas 3 to 5 feet expected.



* WHERE...Cape Cod Bay, Nantucket Sound, Vineyard Sound and 

  Buzzards Bay.



* WHEN...From 11 AM to 11 PM EDT 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.



&&



$$



ANZ230-236-051215-

/O.CON.KBOX.GL.W.0016.260505T1500Z-260506T0300Z/

Boston Harbor-Narragansett Bay-

709 PM EDT Mon May 4 2026



...GALE WARNING REMAINS IN EFFECT FROM 11 AM TO 11 PM EDT

TUESDAY...



* WHAT...Southwest winds 15 to 20 kt with gusts up to 40 kt and 

  waves 2 to 4 feet expected.



* WHERE...In Massachusetts coastal waters, Boston Harbor. In 

  Rhode Island coastal waters, Narragansett Bay.



* WHEN...From 11 AM to 11 PM EDT Tuesday.



* IMPACTS...Strong winds will cause hazardous waves 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.



&&



$$



ANZ235-237-251-051215-

/O.CON.KBOX.GL.W.0016.260505T1500Z-260506T0300Z/

Rhode Island Sound-Block Island Sound-

Massachusetts Bay and Ipswich Bay-

709 PM EDT Mon May 4 2026



...GALE WARNING REMAINS IN EFFECT FROM 11 AM TO 11 PM EDT

TUESDAY...



* WHAT...Southwest winds 15 to 25 kt with gusts up to 40 kt and 

  seas 4 to 7 feet expected.



* WHERE...In Rhode Island coastal waters, Rhode Island Sound and 

  Block Island Sound. In Massachusetts coastal waters, 

  Massachusetts Bay and Ipswich Bay.



* WHEN...From 11 AM to 11 PM EDT 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.



&&



$$



ANZ250-254>256-051215-

/O.CON.KBOX.SC.Y.0051.000000T0000Z-260507T0000Z/

Coastal waters east of Ipswich Bay and the Stellwagen Bank

National Marine Sanctuary-

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-

709 PM EDT Mon May 4 2026



...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT

WEDNESDAY...



* WHAT...South winds 15 to 25 kt with gusts up to 30 kt and seas 

  6 to 9 feet.



* WHERE...In Massachusetts coastal waters, Coastal waters east 

  of Ipswich Bay and the Stellwagen Bank National Marine 

  Sanctuary, 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 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.



&&



$$