WHUS71 KBOX 052050

MWWBOX



URGENT - MARINE WEATHER MESSAGE

National Weather Service Boston/Norton MA

450 PM EDT Tue May 5 2026



ANZ230-236-060300-

/O.CON.KBOX.GL.W.0016.000000T0000Z-260506T0300Z/

Boston Harbor-Narragansett Bay-

450 PM EDT Tue May 5 2026



...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...



* WHAT...Southwest winds 20 to 25 kt with gusts up to 35 kt and 

  waves 2 to 4 feet.



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

  Rhode Island coastal waters, Narragansett Bay.



* WHEN...Until 11 PM EDT this evening.



* 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.



&&



$$



ANZ235-237-251-060300-

/O.CON.KBOX.GL.W.0016.000000T0000Z-260506T0300Z/

Rhode Island Sound-Block Island Sound-

Massachusetts Bay and Ipswich Bay-

450 PM EDT Tue May 5 2026



...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...



* WHAT...Southwest winds 20 to 25 kt with gusts up to 35 kt and 

  seas 4 to 7 feet.



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

  Block Island Sound. In Massachusetts coastal waters, 

  Massachusetts Bay and Ipswich Bay.



* WHEN...Until 11 PM EDT this evening.



* 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>234-060300-

/O.CON.KBOX.GL.W.0016.000000T0000Z-260506T0300Z/

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

450 PM EDT Tue May 5 2026



...GALE WARNING REMAINS IN EFFECT UNTIL 11 PM EDT THIS EVENING...



* WHAT...Southwest winds 20 to 25 kt with gusts up to 35 kt and 

  seas 3 to 5 feet.



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

  Buzzards Bay.



* WHEN...Until 11 PM EDT this evening.



* 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.



&&



$$



ANZ250-061000-

/O.EXT.KBOX.SC.Y.0051.000000T0000Z-260507T0800Z/

Coastal waters east of Ipswich Bay and the Stellwagen Bank

National Marine Sanctuary-

450 PM EDT Tue May 5 2026



...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM EDT THURSDAY...



* WHAT...South winds 15 to 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 4 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.



&&



$$



ANZ254>256-061000-

/O.EXT.KBOX.SC.Y.0051.000000T0000Z-260507T1200Z/

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-

450 PM EDT Tue May 5 2026



...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EDT THURSDAY...



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

  seas 5 to 8 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 8 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.



&&



$$