786
WHUS71 KBOX 201711
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
111 PM EDT FRI MAR 20 2026
ANZ232>235-237-210900-
/O.CON.KBOX.SC.Y.0033.260320T1800Z-260321T0900Z/
NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-RHODE ISLAND SOUND-
BLOCK ISLAND SOUND-
111 PM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT
SATURDAY...
* WHAT...SOUTH WINDS 15 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...UNTIL 5 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ250-254>256-210900-
/O.CON.KBOX.SC.Y.0033.260320T1800Z-260322T0000Z/
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-
111 PM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT
SATURDAY...
* 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 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...UNTIL 8 PM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ231-251-210900-
/O.CON.KBOX.SC.Y.0033.260320T1800Z-260321T0900Z/
CAPE COD BAY-MASSACHUSETTS BAY AND IPSWICH BAY-
111 PM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT
SATURDAY...
* WHAT...SOUTH WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT AND SEAS
2 TO 4 FEET EXPECTED.
* WHERE...CAPE COD BAY AND MASSACHUSETTS BAY AND IPSWICH BAY.
* WHEN...UNTIL 5 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ236-210600-
/O.CON.KBOX.SC.Y.0033.260320T1800Z-260321T0600Z/
NARRAGANSETT BAY-
111 PM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
SATURDAY...
* WHAT...SOUTH WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT AND
WAVES AROUND 3 FEET EXPECTED.
* WHERE...NARRAGANSETT BAY.
* WHEN...UNTIL 2 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ230-210600-
/O.CON.KBOX.SC.Y.0033.260320T1800Z-260321T0600Z/
BOSTON HARBOR-
111 PM EDT FRI MAR 20 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
SATURDAY...
* WHAT...SOUTH WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT AND
WAVES AROUND 2 FEET EXPECTED.
* WHERE...BOSTON HARBOR.
* WHEN...UNTIL 2 AM EDT SATURDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page