501
WHUS71 KBOX 172239
MWWBOX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
539 PM EST WED DEC 17 2025
ANZ250-254-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0600Z/
/O.NEW.KBOX.GL.A.0027.251219T0600Z-251220T1200Z/
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-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, WEST WINDS 15 TO 25 KT WITH GUSTS
UP TO 30 KT AND SEAS 4 TO 6 FEET. FOR THE GALE WATCH, SOUTHWEST
WINDS 25 TO 35 KT WITH GUSTS 40-50 KT AND SEAS 6 TO 11 FEET
POSSIBLE.
* WHERE...COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN
BANK NATIONAL MARINE SANCTUARY AND COASTAL WATERS FROM
PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA OUT 20 NM.
* WHEN...FOR THE GALE WARNING, UNTIL 1 AM EST THURSDAY. FOR THE
GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH SATURDAY MORNING.
* 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.
ANZ231-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0000Z/
/O.NEW.KBOX.GL.A.0027.251219T1000Z-251220T1200Z/
CAPE COD BAY-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, SOUTHWEST WINDS AROUND 20 KT WITH
GUSTS UP TO 25 KT AND SEAS AROUND 3 FEET. FOR THE GALE WATCH,
SOUTHWEST WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT AND SEAS 4
TO 6 FEET POSSIBLE.
* WHERE...CAPE COD BAY.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING.
* 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.
ANZ251-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0000Z/
/O.NEW.KBOX.GL.A.0027.251219T1000Z-251220T1200Z/
MASSACHUSETTS BAY AND IPSWICH BAY-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, SOUTHWEST WINDS 15 TO 20 KT WITH
GUSTS UP TO 25 KT AND SEAS AROUND 3 FEET. FOR THE GALE WATCH,
SOUTHWEST WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT AND SEAS 4
TO 7 FEET POSSIBLE.
* WHERE...MASSACHUSETTS BAY AND IPSWICH BAY.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING.
* 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.
ANZ255-256-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0600Z/
/O.NEW.KBOX.GL.A.0027.251219T0600Z-251220T1200Z/
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-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 1 AM EST THURSDAY
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, WEST WINDS 20 TO 30 KT AND SEAS 6
TO 9 FEET. FOR THE GALE WATCH, SOUTHWEST WINDS 30 TO 40 KT WITH
GUSTS UP TO 45 KT AND SEAS 11 TO 16 FEET POSSIBLE. ISOLATED
GUSTS UP TO 50 KTS POSSIBLE.
* 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...FOR THE GALE WARNING, UNTIL 1 AM EST THURSDAY. FOR THE
GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH SATURDAY MORNING.
* 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.
ANZ232>234-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0000Z/
/O.NEW.KBOX.GL.A.0027.251219T1000Z-251220T1200Z/
NANTUCKET SOUND-VINEYARD SOUND-BUZZARDS BAY-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, SOUTHWEST WINDS 20 TO 25 KT WITH
GUSTS UP TO 30 KT AND SEAS 3 TO 5 FEET. FOR THE GALE WATCH,
SOUTHWEST WINDS 25 TO 35 KT WITH GUSTS UP TO 45 KT AND SEAS 5
TO 8 FEET POSSIBLE.
* WHERE...NANTUCKET SOUND, VINEYARD SOUND AND BUZZARDS BAY.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING.
* 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.
ANZ235-237-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0000Z/
/O.NEW.KBOX.GL.A.0027.251219T0900Z-251220T1200Z/
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, WEST WINDS 20 TO 25 KT WITH GUSTS
UP TO 30 KT AND SEAS 5 TO 7 FEET. FOR THE GALE WATCH, SOUTHWEST
WINDS 25 TO 35 KT WITH GUSTS UP TO 45 KT AND SEAS 7 TO 12 FEET
POSSIBLE. ISOLATED GUSTS TO 50 KTS POSSIBLE.
* WHERE...RHODE ISLAND SOUND AND BLOCK ISLAND SOUND.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING.
* 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.
ANZ230-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0000Z/
/O.NEW.KBOX.GL.A.0027.251219T1200Z-251220T1200Z/
BOSTON HARBOR-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY
MORNING...
* WHAT...FOR THE GALE WARNING, SOUTHWEST WINDS 15 TO 20 KT WITH
GUSTS UP TO 25 KT AND WAVES AROUND 2 FEET. FOR THE GALE WATCH,
SOUTHWEST WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT AND WAVES
AROUND 2 FEET POSSIBLE.
* WHERE...BOSTON HARBOR.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE GALE WATCH, FROM FRIDAY MORNING THROUGH SATURDAY MORNING.
* 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.
ANZ236-181145-
/O.CON.KBOX.GL.W.0044.000000T0000Z-251218T0000Z/
/O.NEW.KBOX.GL.A.0027.251219T1000Z-251220T0600Z/
NARRAGANSETT BAY-
539 PM EST WED DEC 17 2025
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH LATE
FRIDAY NIGHT...
* WHAT...FOR THE GALE WARNING, SOUTHWEST WINDS 15 TO 20 KT WITH
GUSTS UP TO 25 KT AND WAVES 2 TO 4 FEET. FOR THE GALE WATCH,
SOUTHWEST WINDS 20 TO 30 KT WITH GUSTS UP TO 45 KT AND WAVES 4
TO 7 FEET POSSIBLE.
* WHERE...NARRAGANSETT BAY.
* WHEN...FOR THE GALE WARNING, UNTIL 7 PM EST THIS EVENING. FOR
THE GALE WATCH, FROM LATE THURSDAY NIGHT THROUGH LATE FRIDAY
NIGHT.
* 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.
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