453
WHUS71 KBOX 230521
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
121 AM EDT Sat Aug 23 2025

ANZ231-230630-
/O.EXP.KBOX.SC.Y.0086.000000T0000Z-250823T0500Z/
Cape Cod Bay-
121 AM EDT Sat Aug 23 2025

...SMALL CRAFT ADVISORY HAS EXPIRED...

Conditions have fallen below Small Craft Advisory criteria based
on latest buoy observations.

$$

ANZ251-231830-
/O.CON.KBOX.SC.Y.0086.000000T0000Z-250824T1100Z/
Massachusetts Bay and Ipswich Bay-
121 AM EDT Sat Aug 23 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT SUNDAY...

* WHAT...South winds 10 to 20 kt with gusts up to 25 kt and seas
  4 to 6 feet.

* WHERE...Massachusetts Bay and Ipswich Bay.

* WHEN...Until 7 AM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ233-235-237-231100-
/O.CON.KBOX.SC.Y.0086.000000T0000Z-250823T1100Z/
Vineyard Sound-Rhode Island Sound-Block Island Sound-
121 AM EDT Sat Aug 23 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT THIS
MORNING...

* WHAT...Southwest winds around 10 kt and seas 3 to 5 feet.

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

* WHEN...Until 7 AM EDT this morning.

* 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>256-231830-
/O.CON.KBOX.SC.Y.0086.000000T0000Z-250825T0000Z/
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-
121 AM EDT Sat Aug 23 2025

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

* WHAT...South winds 10 to 15 kt and seas 6 to 9 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 PM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

ANZ232-231830-
/O.CON.KBOX.SC.Y.0086.000000T0000Z-250823T2300Z/
Nantucket Sound-
121 AM EDT Sat Aug 23 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

* WHAT...Southwest winds 10 to 15 kt and seas 3 to 5 feet.

* WHERE...Nantucket Sound.

* WHEN...Until 7 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.

&&

$$

ANZ250-231830-
/O.CON.KBOX.SC.Y.0086.000000T0000Z-250825T0000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
121 AM EDT Sat Aug 23 2025

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

* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and seas
  5 to 8 feet.

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

* WHEN...Until 8 PM EDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$