212
WHUS71 KBOX 211720
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
120 PM EDT WED OCT 21 2026
ANZ250-251-221200-
/O.EXT.KBOX.SC.Y.0100.000000T0000Z-261022T1200Z/
/O.EXB.KBOX.GL.W.0024.261022T1200Z-261023T1800Z/
/O.UPG.KBOX.GL.A.0022.261022T2100Z-261023T1800Z/
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-MASSACHUSETTS BAY AND IPSWICH BAY-
120 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 AM EDT THURSDAY
..GALE WARNING IN EFFECT FROM 8 AM THURSDAY TO 2 PM EDT FRIDAY
* WHAT...FOR THE SMALL CRAFT ADVISORY, NORTHEAST WINDS 20 TO 25 KT
WITH GUSTS UP TO 30 KT AND SEAS 7 TO 9 FEET. FOR THE GALE
WARNING, NORTH WINDS 20 TO 30 KT WITH GUSTS UP TO 35 KT AND SEAS
7 TO 10 FEET EXPECTED.
* WHERE...COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN
BANK NATIONAL MARINE SANCTUARY AND MASSACHUSETTS BAY AND
IPSWICH BAY.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 8 AM EDT THURSDAY.
FOR THE GALE WARNING, FROM 8 AM THURSDAY TO 2 PM EDT FRIDAY.
* 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.
ANZ280-221200-
/O.EXB.KBOX.GL.W.0024.261022T1200Z-261023T1800Z/
/O.UPG.KBOX.GL.A.0022.261022T2100Z-261023T1800Z/
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
120 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT FROM 8 AM THURSDAY TO 2 PM EDT FRIDAY
* WHAT...NORTH WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT AND SEAS
8 TO 12 FEET EXPECTED.
* WHERE...OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM
40 TO 60 NM.
* WHEN...FROM 8 AM THURSDAY TO 2 PM EDT FRIDAY.
* 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.
ANZ235-237-221200-
/O.EXT.KBOX.GL.W.0024.000000T0000Z-261023T0000Z/
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
120 PM EDT WED OCT 21 2026
..GALE WARNING NOW IN EFFECT UNTIL 8 PM EDT THURSDAY
* WHAT...NORTH WINDS 20 TO 30 KT WITH GUSTS UP TO 35 KT AND SEAS
5 TO 8 FEET.
* WHERE...RHODE ISLAND SOUND AND BLOCK ISLAND SOUND.
* WHEN...UNTIL 8 PM EDT THURSDAY.
* 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>234-221200-
/O.EXT.KBOX.GL.W.0024.000000T0000Z-261023T1800Z/
CAPE COD BAY-NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
120 PM EDT WED OCT 21 2026
..GALE WARNING NOW IN EFFECT UNTIL 2 PM EDT FRIDAY
* WHAT...NORTH WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT AND SEAS
4 TO 6 FEET.
* WHERE...CAPE COD BAY, NANTUCKET SOUND, VINEYARD SOUND AND
BUZZARDS BAY.
* WHEN...UNTIL 2 PM EDT FRIDAY.
* 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.
ANZ254-255-281-282-221200-
/O.EXT.KBOX.GL.W.0024.000000T0000Z-261023T1800Z/
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-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
120 PM EDT WED OCT 21 2026
..GALE WARNING NOW IN EFFECT UNTIL 2 PM EDT FRIDAY
* WHAT...NORTH WINDS 25 TO 35 KT WITH GUSTS UP TO 45 KT AND SEAS
9 TO 14 FEET.
* 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 ATLANTIC COASTAL WATERS, OCEAN
WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM AND
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60
NM.
* WHEN...UNTIL 2 PM EDT FRIDAY.
* 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.
ANZ256-283-221200-
/O.CON.KBOX.GL.W.0024.000000T0000Z-261023T0000Z/
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
120 PM EDT WED OCT 21 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THURSDAY
* WHAT...NORTH WINDS 25 TO 35 KT WITH GUSTS UP TO 45 KT AND SEAS
10 TO 15 FEET.
* WHERE...IN RHODE ISLAND COASTAL WATERS, COASTAL WATERS FROM
MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT TO 20 NM SOUTH OF
BLOCK ISLAND. IN ATLANTIC COASTAL WATERS, OCEAN WATERS FROM
MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM.
* WHEN...UNTIL 8 PM EDT THURSDAY.
* 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.
ANZ230-221200-
/O.EXT.KBOX.SC.Y.0100.000000T0000Z-261023T0600Z/
BOSTON HARBOR-
120 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM EDT FRIDAY
* WHAT...NORTH WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT AND WAVES
AROUND 2 FEET.
* WHERE...BOSTON HARBOR.
* WHEN...UNTIL 2 AM 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.
ANZ236-221200-
/O.EXT.KBOX.SC.Y.0100.000000T0000Z-261023T0000Z/
NARRAGANSETT BAY-
120 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THURSDAY
* WHAT...NORTH WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND
WAVES 2 TO 3 FEET.
* WHERE...NARRAGANSETT BAY.
* WHEN...UNTIL 8 PM EDT THURSDAY.
* 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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