513
WHUS71 KBOX 281823
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
123 PM EST SAT FEB 28 2026
ANZ250-254>256-011300-
/O.NEW.KBOX.SC.Y.0026.260302T0200Z-260302T1800Z/
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-
123 PM EST SAT FEB 28 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM SUNDAY TO 1 PM EST
MONDAY...
* WHAT...NORTH WINDS 10 TO 20 KT WITH GUSTS UP TO 25 KT AND SEAS
4 TO 6 FEET EXPECTED.
* 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...FROM 9 PM SUNDAY TO 1 PM EST MONDAY.
* 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>235-237-251-011300-
/O.NEW.KBOX.UP.Y.0011.260302T0600Z-260302T1500Z/
CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
MASSACHUSETTS BAY AND IPSWICH BAY-
123 PM EST SAT FEB 28 2026
...FREEZING SPRAY ADVISORY IN EFFECT FROM 1 AM TO 10 AM EST
MONDAY...
* WHAT...MODERATE ACCUMULATION OF FREEZING SPRAY EXPECTED.
* WHERE...PORTIONS OF MASSACHUSETTS COASTAL WATERS AND RHODE
ISLAND COASTAL WATERS.
* WHEN...FROM 1 AM TO 10 AM EST MONDAY.
* IMPACTS...OPERATING A VESSEL IN FREEZING SPRAY IS HAZARDOUS.
FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC COMPONENTS
INOPERATIVE. ICE ACCRETION ON DECKS AND SUPERSTRUCTURES MAY
RESULT IN SOME LOSS OF STABILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR ICE ACCUMULATION ON THEIR VESSEL AND
CONSIDER ALTERING PLANS TO AVOID OR MITIGATE THESE HAZARDOUS
CONDITIONS. DURING FREEZING SPRAY CONDITIONS, THE U.S. COAST
GUARD ADVISES MARINERS TO CHECK AND ENSURE ALL LIFE-SAVING
DEVICES REMAIN FREE OF ICE.
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