Marine Weather Message
Issued by NWS Boston, MA

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040
WHUS71 KBOX 190631
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
231 AM EDT Thu Jun 19 2025

ANZ231-251-192315-
/O.EXB.KBOX.SC.Y.0074.250619T2000Z-250621T0000Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
231 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and
  seas 2 to 3 feet expected.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...From 4 PM this afternoon to 8 PM EDT Friday.

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

* ADDITIONAL DETAILS...Strongest wind gusts are expected to take
  place on Friday. In addition...there is a risk for severe
  thunderstorms late this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ232>235-237-192315-
/O.EXB.KBOX.SC.Y.0074.250619T2000Z-250621T0000Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-Rhode Island Sound-
Block Island Sound-
231 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and
  seas 3 to 5 feet expected.

* WHERE...In Massachusetts coastal waters, Nantucket Sound,
  Vineyard Sound and Buzzards Bay. In Rhode Island coastal
  waters, Rhode Island Sound and Block Island Sound.

* WHEN...From 4 PM this afternoon to 8 PM EDT Friday.

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

* ADDITIONAL DETAILS...Strongest wind gusts are expected to take
  place on Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ236-192315-
/O.EXB.KBOX.SC.Y.0074.250619T2000Z-250621T0000Z/
Narragansett Bay-
231 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...

* WHAT...Southwest winds 10 to 15 kt with gusts up to 25 kt and
  waves 3 to 4 feet expected.

* WHERE...Narragansett Bay.

* WHEN...From 4 PM this afternoon to 8 PM EDT Friday.

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

* ADDITIONAL DETAILS...Strongest wind gusts are expected to take
  place on Friday. In addition...there is a risk for severe
  thunderstorms late this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ230-192315-
/O.EXB.KBOX.SC.Y.0074.250619T2000Z-250621T0000Z/
Boston Harbor-
231 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...

* WHAT...Southwest winds 15 to 20 kt with gusts up to 30 kt and
  waves 1 to 2 feet expected.

* WHERE...Boston Harbor.

* WHEN...From 4 PM this afternoon to 8 PM EDT Friday.

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

* ADDITIONAL DETAILS...Strongest wind gusts are expected to take
  place on Friday. In addition...there is a risk for severe
  thunderstorms late this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ254>256-192315-
/O.EXT.KBOX.SC.Y.0074.250619T2000Z-250621T0000Z/
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-
231 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...

* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and
  seas 4 to 7 feet expected.

* 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...From 4 PM this afternoon to 8 PM EDT Friday.

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

* ADDITIONAL DETAILS...Strongest wind gusts are expected to take
  place on Friday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ250-192315-
/O.EXT.KBOX.SC.Y.0074.250619T2000Z-250621T0000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
231 AM EDT Thu Jun 19 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...

* WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt and
  seas 3 to 5 feet expected.

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

* WHEN...From 4 PM this afternoon to 8 PM EDT Friday.

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

* ADDITIONAL DETAILS...Strongest wind gusts are expected to take
  place on Friday. In addition...there is a risk for severe
  thunderstorms late this afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$