924
WHUS71 KBOX 170619
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
219 AM EDT MON AUG 17 2026
ANZ231-250-251-170730-
/O.CAN.KBOX.SC.Y.0078.260817T1200Z-260818T0300Z/
CAPE COD BAY-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-MASSACHUSETTS BAY AND IPSWICH BAY-
219 AM EDT MON AUG 17 2026
..SMALL CRAFT ADVISORY IS CANCELLED
WIND AND SEAS ARE EXPECTED TO FALL SHY OF ADVISORY CRITERIA.
ANZ233>235-237-172030-
/O.EXT.KBOX.SC.Y.0078.000000T0000Z-260818T0000Z/
VINEYARD SOUND-BUZZARDS BAY-RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
219 AM EDT MON AUG 17 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
* WHAT...SOUTH WINDS 10 TO 20 KT AND SEAS 3 TO 5 FEET.
* WHERE...IN MASSACHUSETTS COASTAL WATERS, VINEYARD SOUND AND
BUZZARDS BAY. IN RHODE ISLAND COASTAL WATERS, RHODE ISLAND
SOUND AND BLOCK ISLAND SOUND.
* 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.
ANZ232-172030-
/O.EXT.KBOX.SC.Y.0078.260817T1200Z-260818T0000Z/
NANTUCKET SOUND-
219 AM EDT MON AUG 17 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING TO
8 PM EDT THIS EVENING...
* WHAT...SOUTH WINDS AROUND 15 KT AND SEAS 2 TO 4 FEET EXPECTED.
* WHERE...NANTUCKET SOUND.
* WHEN...FROM 8 AM THIS MORNING TO 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.
ANZ254-172030-
/O.EXT.KBOX.SC.Y.0078.260817T1200Z-260818T0600Z/
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
219 AM EDT MON AUG 17 2026
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 8 AM THIS MORNING TO
2 AM EDT TUESDAY...
* WHAT...SOUTHEAST WINDS 5 TO 15 KT AND SEAS 3 TO 5 FEET
EXPECTED.
* WHERE...COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO
NANTUCKET MA OUT 20 NM.
* WHEN...FROM 8 AM THIS MORNING TO 2 AM EDT TUESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
ANZ255-256-172030-
/O.CON.KBOX.SC.Y.0078.000000T0000Z-260818T0600Z/
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-
219 AM EDT MON AUG 17 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
TUESDAY...
* WHAT...SOUTH WINDS 10 TO 20 KT WITH GUSTS UP TO 25 KT AND SEAS
3 TO 5 FEET.
* 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...UNTIL 2 AM EDT TUESDAY.
* 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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