753
FZUS51 KBOX 211703
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 PM EDT WED OCT 21 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-220600-
103 PM EDT WED OCT 21 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE OVER THE NORTHERN WATERS AND A LOW PRESSURE SYSTEM
SOUTH OF NEW ENGLAND SITS OFF THE SOUTHERN MID ATLANTIC COAST WILL
LINGER TODAY, THEN MOVE OUT TO SEA THURSDAY INTO FRIDAY. THE WORST
IMPACTS FROM THIS STORM MAY REMAIN SOUTH OF OUR WATERS, THOUGH
NORTHEAST GALE-FORCE WINDS AND ROUGH SEAS ARE STILL EXPECTED,
ESPECIALLY ACROSS THE SOUTHERN WATERS THROUGH THURSDAY. GALE-FORCE
WINDS PIVOT TOWARD THE EASTERN AND NORTHERN WATERS THURSDAY NIGHT
INTO EARLY FRIDAY. THERE WILL BE IMPROVEMENTS AS HIGH PRESSURE
BRINGS LIGHT WINDS AND SEAS 2-5 FT BY THIS WEEKEND.
ANZ250-220600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 7 TO 9 FT. WAVE DETAIL: E 9 FT AT 9 SECONDS AND NW 2 FT AT
5 SECONDS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 7 TO
9 FT. WAVE DETAIL: E 9 FT AT 10 SECONDS AND NW 3 FT AT 5 SECONDS.
A CHANCE OF SHOWERS.
THU
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT. WAVE DETAIL: E 9 FT AT 9 SECONDS AND N 5 FT AT 6 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
6 TO 9 FT. WAVE DETAIL: N 9 FT AT 7 SECONDS.
FRI
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT. WAVE DETAIL: NE 9 FT AT 9 SECONDS AND N 7 FT AT 7 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT. WAVE DETAIL: NE 7 FT AT 9 SECONDS AND NW 2 FT AT
6 SECONDS.
SAT
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SAT NIGHT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-220600-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 2 FT AT
5 SECONDS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 3 FT AT 5 SECONDS.
THU
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 5 FT AT 6 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N
6 FT AT 6 SECONDS AND NE 6 FT AT 9 SECONDS.
FRI
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT
AT 6 SECONDS AND NE 6 FT AT 9 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT. WAVE DETAIL: NE 5 FT AT 9 SECONDS AND NW
4 FT AT 7 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SUN AND SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-220600-
CAPE COD BAY-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS.
TONIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT. WAVE DETAIL: N 6 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT AT 7 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: N 5 FT AT 7 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-220600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 8 TO 11 FT. WAVE DETAIL: NE 11 FT AT 10 SECONDS AND N 2 FT
AT 5 SECONDS. A CHANCE OF SHOWERS.
TONIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 8 TO
11 FT. WAVE DETAIL: E 11 FT AT 10 SECONDS AND N 5 FT AT
5 SECONDS. SHOWERS.
THU
N WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS 8 TO
11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
7 TO 10 FT. WAVE DETAIL: NE 10 FT AT 9 SECONDS AND NW 6 FT AT
6 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 7 TO 10 FT. WAVE DETAIL: NE 10 FT AT 9 SECONDS
AND NW 5 FT AT 6 SECONDS.
FRI NIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 6 TO 9 FT. WAVE DETAIL: NE 9 FT AT 9 SECONDS
AND N 4 FT AT 6 SECONDS.
SAT
NW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT NIGHT AND SUN
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-220600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
THIS AFTERNOON
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 8 TO 11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 4 FT AT
6 SECONDS. A CHANCE OF SHOWERS.
TONIGHT
NE WINDS 30 TO 40 KT. SEAS 8 TO 11 FT. WAVE DETAIL: NE
11 FT AT 9 SECONDS AND N 6 FT AT 6 SECONDS. SHOWERS.
THU
N WINDS 30 TO 40 KT, DIMINISHING TO 25 TO 35 KT IN THE
AFTERNOON. SEAS 8 TO 11 FT, SUBSIDING TO 6 TO 9 FT IN THE
AFTERNOON. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS, BECOMING NE 9 FT AT 9 SECONDS AND N 5 FT AT 5 SECONDS.
THU NIGHT
N WINDS 25 TO 35 KT, BECOMING 30 TO 35 KT AFTER
MIDNIGHT. SEAS 6 TO 9 FT. WAVE DETAIL: NE 9 FT AT 8 SECONDS AND
NW 6 FT AT 5 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 6 TO 9 FT, SUBSIDING TO 5 TO 7 FT IN THE
AFTERNOON. WAVE DETAIL: NE 9 FT AT 9 SECONDS AND NW 5 FT AT
5 SECONDS, BECOMING NE 7 FT AT 9 SECONDS AND NW 4 FT AT
5 SECONDS.
FRI NIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO AROUND 15 KT
AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: NE 7 FT AT 9 SECONDS
AND NW 3 FT AT 5 SECONDS.
SAT AND SAT NIGHT
N WINDS 10 TO 15 KT, BECOMING W AROUND 5 KT.
SEAS 3 TO 5 FT.
SUN AND SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-220600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 8 TO 11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 5 FT AT
6 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS 8 TO
11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS 8 TO
11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 7 FT AT
6 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 8 FT. WAVE DETAIL: NE 8 FT AT 8 SECONDS AND N 5 FT AT
5 SECONDS.
FRI
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 5 TO 8 FT. WAVE DETAIL: N 7 FT
AT 6 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT. WAVE DETAIL: NE 4 FT AT 7 SECONDS AND NW
2 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-220600-
NANTUCKET SOUND-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: NE 6 FT AT 6 SECONDS. A CHANCE OF
SHOWERS.
TONIGHT
NE WINDS 25 TO 35 KT, BECOMING N 30 TO 35 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS.
SHOWERS.
THU
N WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS 4 TO
6 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS.
THU NIGHT
N WINDS 25 TO 35 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N
6 FT AT 6 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE
DETAIL: N 4 FT AT 5 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-220600-
VINEYARD SOUND-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 6 SECONDS. A SLIGHT CHANCE
OF SHOWERS.
TONIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 5 FT AT 6 SECONDS. SHOWERS LIKELY.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT, SUBSIDING TO 3 TO 4 FT IN THE AFTERNOON. WAVE DETAIL: N
6 FT AT 5 SECONDS, BECOMING N 4 FT AT 6 SECONDS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 4 FT. WAVE DETAIL: NE 4 FT AT 7 SECONDS AND NW 3 FT AT
4 SECONDS.
FRI AND FRI NIGHT
N WINDS 20 TO 25 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 5 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 5 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-220600-
BUZZARDS BAY-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS. A SLIGHT CHANCE
OF SHOWERS.
TONIGHT
NE WINDS 25 TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: N
5 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
AROUND 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS.
FRI AND FRI NIGHT
N WINDS 20 TO 25 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR
LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-220600-
RHODE ISLAND SOUND-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: N 7 FT AT 6 SECONDS. A SLIGHT CHANCE
OF SHOWERS.
TONIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. WAVE DETAIL: N 7 FT AT 6 SECONDS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. WAVE DETAIL: NE 5 FT AT 8 SECONDS AND N 4 FT AT
4 SECONDS.
FRI
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-220600-
BLOCK ISLAND SOUND-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY MORNING
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 4 FT AT
6 SECONDS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 6 FT AT 6 SECONDS.
THU
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: NE
7 FT AT 9 SECONDS AND NW 4 FT AT 5 SECONDS.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND N 3 FT AT
4 SECONDS.
FRI
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NE
4 FT AT 6 SECONDS AND N 3 FT AT 3 SECONDS.
FRI NIGHT
N WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
NE 2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-220600-
BOSTON HARBOR-
103 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
THIS AFTERNOON
NE WINDS 20 TO 25 KT. WAVES 2 TO 3 FT.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT.
THU
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES AROUND
2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR ENTRANCE.
THU NIGHT
N WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR
ENTRANCE.
FRI AND FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR ENTRANCE.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR
LESS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-220600-
NARRAGANSETT BAY-
103 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
WAVES AROUND 3 FT.
TONIGHT
N WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. WAVES AROUND 3 FT.
THU
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. WAVES 2 TO 3 FT.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT.
FRI AND FRI NIGHT
N WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
SAT THROUGH SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-220600-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 PM EDT WED OCT 21 2026
...GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON...
THIS AFTERNOON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 8 TO 9 FT. WAVE DETAIL: E 9 FT AT 9 SECONDS AND NW 1 FOOT AT
4 SECONDS.
TONIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 8 TO
9 FT. WAVE DETAIL: E 9 FT AT 9 SECONDS AND NW 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 7 TO
9 FT. WAVE DETAIL: NE 9 FT AT 9 SECONDS AND N 5 FT AT 6 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
6 TO 9 FT, BUILDING TO 8 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL: N
9 FT AT 7 SECONDS, BECOMING NE 10 FT AT 8 SECONDS AND N 7 FT AT
7 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 9 TO 10 FT, SUBSIDING TO 7 TO 10 FT IN THE
AFTERNOON. WAVE DETAIL: NE 10 FT AT 9 SECONDS AND N 7 FT AT
7 SECONDS, BECOMING NE 10 FT AT 9 SECONDS AND N 6 FT AT
7 SECONDS.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 8 FT. WAVE DETAIL: NE 8 FT AT 9 SECONDS AND NW 5 FT AT
7 SECONDS.
SAT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT.
SAT NIGHT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-220600-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
THIS AFTERNOON
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT.
SEAS 10 TO 13 FT. WAVE DETAIL: E 13 FT AT 9 SECONDS AND N 2 FT AT
5 SECONDS. SHOWERS.
TONIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 9 TO
13 FT. WAVE DETAIL: E 13 FT AT 10 SECONDS AND N 6 FT AT
7 SECONDS. SHOWERS.
THU
NE WINDS 30 TO 35 KT, BECOMING N 25 TO 35 KT IN THE
AFTERNOON. GUSTS UP TO 50 KT. SEAS 9 TO 12 FT. WAVE DETAIL: NE
12 FT AT 9 SECONDS AND N 7 FT AT 7 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING.
THU NIGHT
N WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
9 TO 12 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS AND N 8 FT AT
7 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 9 TO 12 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS
AND NW 7 FT AT 8 SECONDS.
FRI NIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 8 TO 11 FT, SUBSIDING TO
6 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND
NW 5 FT AT 6 SECONDS, BECOMING NE 9 FT AT 9 SECONDS AND N 4 FT AT
8 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT.
SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 4 TO 6 FT.
SUN AND SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-220600-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
THIS AFTERNOON
NE WINDS AROUND 35 KT WITH GUSTS UP TO 45 KT.
SEAS 12 TO 14 FT. WAVE DETAIL: NE 14 FT AT 9 SECONDS AND N 5 FT
AT 6 SECONDS. SHOWERS.
TONIGHT
NE WINDS 30 TO 40 KT WITH GUSTS UP TO 45 KT. SEAS
12 TO 14 FT. WAVE DETAIL: NE 14 FT AT 9 SECONDS AND N 6 FT AT
7 SECONDS. SHOWERS.
THU
N WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT. SEAS 11 TO
13 FT. WAVE DETAIL: NE 13 FT AT 9 SECONDS AND NW 7 FT AT
7 SECONDS. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
10 TO 13 FT. WAVE DETAIL: NE 13 FT AT 9 SECONDS AND NW 7 FT AT
7 SECONDS.
FRI
N WINDS 25 TO 30 KT. SEAS 9 TO 12 FT. WAVE DETAIL: NE
12 FT AT 9 SECONDS AND NW 5 FT AT 7 SECONDS.
FRI NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 15 TO 20 KT AFTER MIDNIGHT. SEAS 8 TO 11 FT,
SUBSIDING TO 6 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL: NE 11 FT AT
10 SECONDS AND NW 3 FT AT 6 SECONDS, BECOMING NE 9 FT AT
10 SECONDS AND NW 3 FT AT 6 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
8 FT.
SAT NIGHT AND SUN
NW WINDS 5 TO 10 KT. SEAS 4 TO 6 FT.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-220600-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
THIS AFTERNOON
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT.
SEAS 12 TO 14 FT. WAVE DETAIL: NE 14 FT AT 10 SECONDS AND N 5 FT
AT 7 SECONDS. SHOWERS LIKELY.
TONIGHT
NE WINDS 35 TO 40 KT WITH GUSTS UP TO 45 KT. SEAS
12 TO 14 FT. WAVE DETAIL: NE 14 FT AT 10 SECONDS AND N 7 FT AT
7 SECONDS. SHOWERS.
THU
N WINDS 30 TO 40 KT WITH GUSTS UP TO 45 KT. SEAS 11 TO
13 FT, SUBSIDING TO 9 TO 13 FT IN THE AFTERNOON. WAVE DETAIL: NE
13 FT AT 9 SECONDS AND N 7 FT AT 7 SECONDS.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
8 TO 11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 8 FT AT
7 SECONDS.
FRI
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 8 TO 11 FT. WAVE DETAIL: NE 10 FT AT 9 SECONDS
AND N 7 FT AT 7 SECONDS.
FRI NIGHT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 6 TO 9 FT, SUBSIDING TO
5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: NE 8 FT AT 10 SECONDS AND
NW 4 FT AT 5 SECONDS, BECOMING NE 7 FT AT 10 SECONDS AND NW 2 FT
AT 4 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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