954
WHUS71 KBOX 171851
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
251 PM EDT SAT OCT 17 2026
ANZ254>256-180800-
/O.CON.KBOX.SC.Y.0099.000000T0000Z-261018T1500Z/
/O.NEW.KBOX.GL.A.0020.261020T0000Z-261021T1200Z/
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-
251 PM EDT SAT OCT 17 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM EDT
SUNDAY...
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
* WHAT...FOR THE SMALL CRAFT ADVISORY, NORTH WINDS 15 TO 25 KT
WITH GUSTS UP TO 30 KT AND SEAS 4 TO 6 FEET. FOR THE GALE
WATCH, NORTHEAST WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT AND
SEAS 7 TO 10 FEET POSSIBLE.
* 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...FOR THE SMALL CRAFT ADVISORY, UNTIL 11 AM EDT SUNDAY.
FOR THE GALE WATCH, FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING.
* IMPACTS...STRONG WINDS CAN CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND SEAS.
ANZ231-251-180600-
/O.CON.KBOX.SC.Y.0099.000000T0000Z-261018T0600Z/
CAPE COD BAY-MASSACHUSETTS BAY AND IPSWICH BAY-
251 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT SUNDAY
* WHAT...NORTH WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT AND SEAS
2 TO 4 FEET.
* WHERE...CAPE COD BAY AND MASSACHUSETTS BAY AND IPSWICH BAY.
* WHEN...UNTIL 2 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.
ANZ232>235-237-180800-
/O.CON.KBOX.SC.Y.0099.000000T0000Z-261018T1200Z/
NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-RHODE ISLAND SOUND-
BLOCK ISLAND SOUND-
251 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY
* WHAT...NORTH WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT AND SEAS
AROUND 3 FEET.
* 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 8 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.
ANZ250-180800-
/O.CON.KBOX.SC.Y.0099.000000T0000Z-261018T1200Z/
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
251 PM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SUNDAY
* WHAT...NORTH WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT AND SEAS
4 TO 6 FEET.
* WHERE...COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN
BANK NATIONAL MARINE SANCTUARY.
* WHEN...UNTIL 8 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.
ANZ230-236-180000-
/O.CON.KBOX.SC.Y.0099.000000T0000Z-261018T0000Z/
BOSTON HARBOR-NARRAGANSETT BAY-
251 PM EDT SAT OCT 17 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...NORTH WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT AND
WAVES AROUND 3 FEET.
* WHERE...IN MASSACHUSETTS COASTAL WATERS, BOSTON HARBOR. IN
RHODE ISLAND COASTAL WATERS, NARRAGANSETT BAY.
* WHEN...UNTIL 8 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.
ANZ281>283-180800-
/O.NEW.KBOX.GL.A.0020.261020T0000Z-261021T1200Z/
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
251 PM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY
MORNING...
* WHAT...NORTHEAST WINDS 25 TO 35 KT WITH GUSTS UP TO 45 KT AND
SEAS 11 TO 13 FEET POSSIBLE.
* WHERE...OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO
60 NM, OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25
TO 60 NM AND OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD
FROM 25 TO 60 NM.
* WHEN...FROM MONDAY EVENING THROUGH WEDNESDAY MORNING.
* IMPACTS...STRONG WINDS CAN CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD CONSIDER ALTERING PLANS TO AVOID POSSIBLE
HAZARDOUS CONDITIONS. REMAIN IN PORT, SEEK SAFE HARBOR, ALTER
COURSE, AND/OR SECURE THE VESSEL FOR SEVERE WIND AND WAVES.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page