Marine Weather Message - Issued When Needed
Check the date and area (our area is ANZ251)

WHUS71 KBOX 050550
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
150 AM EDT Mon Oct 5 2026

ANZ230-236-052000-
/O.EXB.KBOX.SC.Y.0092.261005T1900Z-261006T0100Z/
Boston Harbor-Narragansett Bay-
150 AM EDT Mon Oct 5 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
9 PM EDT THIS EVENING...

* WHAT...Northwest winds 10 to 15 kt with gusts up to 25 kt and 
  waves around 2 feet expected.

* WHERE...In Massachusetts coastal waters, Boston Harbor. In 
  Rhode Island coastal waters, Narragansett Bay.

* WHEN...From 3 PM this afternoon to 9 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ231-233>235-237-251-052000-
/O.EXB.KBOX.SC.Y.0092.261005T1900Z-261006T1200Z/
Cape Cod Bay-Vineyard Sound-Buzzards Bay-Rhode Island Sound-
Block Island Sound-Massachusetts Bay and Ipswich Bay-
150 AM EDT Mon Oct 5 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
8 AM EDT TUESDAY...

* WHAT...Northwest winds 15 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Portions of Massachusetts coastal waters and Rhode 
  Island coastal waters. 

* WHEN...From 3 PM this afternoon to 8 AM EDT 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.

&&

$$

ANZ232-052000-
/O.EXT.KBOX.SC.Y.0092.261005T1900Z-261006T1200Z/
Nantucket Sound-
150 AM EDT Mon Oct 5 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO
8 AM EDT TUESDAY...

* WHAT...Northwest winds 15 to 25 kt and seas 2 to 4 feet 
  expected.

* WHERE...Nantucket Sound.

* WHEN...From 3 PM this afternoon to 8 AM EDT 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.

&&

$$

ANZ254-052000-
/O.CON.KBOX.SC.Y.0092.261005T1200Z-261006T1700Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
150 AM EDT Mon Oct 5 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING
TO 1 PM EDT TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt and 
  seas 4 to 6 feet expected.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 NM.

* WHEN...From 8 AM this morning to 1 PM EDT 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.

&&

$$

ANZ250-052000-
/O.CON.KBOX.SC.Y.0092.261005T1400Z-261006T1700Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
150 AM EDT Mon Oct 5 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING
TO 1 PM EDT TUESDAY...

* WHAT...West winds 10 to 20 kt with gusts up to 25 kt and seas 
  3 to 5 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary.

* WHEN...From 10 AM this morning to 1 PM EDT 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.

&&

$$

ANZ255-256-052000-
/O.CON.KBOX.SC.Y.0092.261005T1900Z-261006T1700Z/
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-
150 AM EDT Mon Oct 5 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 1 PM EDT TUESDAY...

* WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and 
  seas 4 to 6 feet expected.

* WHERE...In Massachusetts coastal waters, 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...From 3 PM this afternoon to 1 PM EDT 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.

&&

$$