330
WHUS71 KBOX 180741
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
341 AM EDT THU JUN 18 2026
ANZ250-280-182045-
/O.CON.KBOX.GL.W.0019.260618T1500Z-260619T0200Z/
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
341 AM EDT THU JUN 18 2026
...GALE WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
10 PM EDT THIS EVENING...
* WHAT...SOUTH WINDS 20 TO 25 KT WITH GUSTS UP TO 40 KT AND SEAS
5 TO 8 FEET EXPECTED.
* WHERE...IN MASSACHUSETTS COASTAL WATERS, COASTAL WATERS EAST
OF IPSWICH BAY AND THE STELLWAGEN BANK NATIONAL MARINE
SANCTUARY. IN ATLANTIC COASTAL WATERS, OCEAN WATERS FROM THE
MERRIMACK RIVER TO PLYMOUTH FROM 40 TO 60 NM.
* WHEN...FROM 11 AM THIS MORNING TO 10 PM EDT THIS EVENING.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
ANZ251-182045-
/O.CON.KBOX.GL.W.0019.260618T1500Z-260618T2300Z/
MASSACHUSETTS BAY AND IPSWICH BAY-
341 AM EDT THU JUN 18 2026
...GALE WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM
EDT THIS EVENING...
* WHAT...SOUTH WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT AND SEAS
3 TO 5 FEET EXPECTED.
* WHERE...MASSACHUSETTS BAY AND IPSWICH BAY.
* WHEN...FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
ANZ231>234-182045-
/O.CON.KBOX.GL.W.0019.260618T1500Z-260619T0200Z/
CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
341 AM EDT THU JUN 18 2026
...GALE WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
10 PM EDT THIS EVENING...
* WHAT...SOUTH WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND SEAS
3 TO 5 FEET EXPECTED.
* WHERE...CAPE COD BAY, NANTUCKET SOUND, VINEYARD SOUND AND
BUZZARDS BAY.
* WHEN...FROM 11 AM THIS MORNING TO 10 PM EDT THIS EVENING.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS SEAS WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
ANZ230-182045-
/O.CON.KBOX.GL.W.0019.260618T1700Z-260618T2300Z/
BOSTON HARBOR-
341 AM EDT THU JUN 18 2026
...GALE WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM EDT THIS EVENING...
* WHAT...SOUTH WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT AND
WAVES AROUND 2 FEET EXPECTED.
* WHERE...BOSTON HARBOR.
* WHEN...FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR HAZARDOUS CONDITIONS.
ANZ254-182045-
/O.EXT.KBOX.SC.Y.0067.260618T1700Z-260620T0000Z/
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
341 AM EDT THU JUN 18 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM EDT FRIDAY...
* WHAT...SOUTHWEST WINDS 15 TO 25 KT WITH A FEW GUSTS UP TO 35 KT
AND SEAS 4 TO 7 FEET EXPECTED.
* WHERE...COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO
NANTUCKET MA OUT 20 NM.
* WHEN...FROM 1 PM THIS AFTERNOON TO 8 PM EDT FRIDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ255-256-182045-
/O.CON.KBOX.SC.Y.0067.260618T1500Z-260620T0000Z/
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-
341 AM EDT THU JUN 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 8 PM EDT FRIDAY...
* WHAT...SOUTHWEST WINDS 15 TO 25 KT WITH A FEW GUSTS UP TO 35 KT
AND SEAS 5 TO 8 FEET EXPECTED.
* WHERE...IN MASSACHUSETTS COASTAL WATERS, 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 11 AM THIS MORNING TO 8 PM EDT FRIDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ235-237-182045-
/O.CON.KBOX.SC.Y.0067.260618T1500Z-260620T0000Z/
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
341 AM EDT THU JUN 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 8 PM EDT FRIDAY...
* WHAT...SOUTHWEST WINDS 15 TO 25 KT WITH A FEW GUSTS UP TO 35 KT
AND SEAS 4 TO 7 FEET EXPECTED.
* WHERE...RHODE ISLAND SOUND AND BLOCK ISLAND SOUND.
* WHEN...FROM 11 AM THIS MORNING TO 8 PM EDT FRIDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ236-182045-
/O.CON.KBOX.SC.Y.0067.260618T1500Z-260618T2300Z/
NARRAGANSETT BAY-
341 AM EDT THU JUN 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 7 PM EDT THIS EVENING...
* WHAT...SOUTH WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT AND
WAVES 3 TO 5 FEET EXPECTED.
* WHERE...NARRAGANSETT BAY.
* WHEN...FROM 11 AM THIS MORNING TO 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.
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