631
FZUS51 KBOX 220203
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1003 PM EDT WED OCT 21 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-221500-
1003 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.
ANZ250-221500-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1003 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
...GALE WARNING IN EFFECT FROM 8 AM EDT THURSDAY THROUGH FRIDAY
AFTERNOON...
OVERNIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
8 TO 9 FT. WAVE DETAIL: E 9 FT AT 10 SECONDS AND NW 3 FT AT
5 SECONDS. A SLIGHT CHANCE OF LIGHT RAIN.
THU
N WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 7 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
7 TO 10 FT. WAVE DETAIL: N 10 FT AT 7 SECONDS.
FRI
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 8 TO 10 FT, SUBSIDING TO 6 TO
9 FT IN THE AFTERNOON. WAVE DETAIL: NE 10 FT AT 9 SECONDS AND N
7 FT AT 7 SECONDS, BECOMING NE 9 FT AT 9 SECONDS AND N 5 FT AT
6 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE
DETAIL: NE 7 FT AT 9 SECONDS AND NW 2 FT AT 6 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: NW 5 FT AT 3 SECONDS AND NE 5 FT AT 9 SECONDS.
SUN THROUGH MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ251-221500-
MASSACHUSETTS BAY AND IPSWICH BAY-
1003 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THURSDAY
...GALE WARNING IN EFFECT FROM 8 AM EDT THURSDAY THROUGH FRIDAY
AFTERNOON...
OVERNIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 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 35 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 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT. WAVE DETAIL: NE 7 FT AT 9 SECONDS AND N 6 FT AT
6 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 7 FT. WAVE DETAIL: N 7 FT
AT 6 SECONDS AND NE 7 FT AT 9 SECONDS.
FRI NIGHT
N WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: NE
6 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. WAVE
DETAIL: W 4 FT AT 4 SECONDS AND NE 4 FT AT 9 SECONDS.
SUN THROUGH MON NIGHT
NW 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.
ANZ231-221500-
CAPE COD BAY-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. WAVE DETAIL: N 6 FT AT 5 SECONDS. A CHANCE OF LIGHT
RAIN.
THU
N WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. 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
5 TO 7 FT. WAVE DETAIL: N 7 FT AT 6 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 7 FT. WAVE DETAIL: N 7 FT
AT 7 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE
DETAIL: N 5 FT AT 7 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 6 SECONDS.
SUN THROUGH MON NIGHT
NW WINDS 10 TO 15 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.
ANZ254-221500-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 25 TO 30 KT. GUSTS UP TO 35 KT, INCREASING
TO 45 KT. SEAS 9 TO 12 FT. WAVE DETAIL: NE 12 FT AT 10 SECONDS
AND N 5 FT AT 5 SECONDS. PATCHY FOG. RAIN LIKELY. VSBY 1 TO 3 NM.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT. SEAS 9 TO
12 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS. A CHANCE OF LIGHT RAIN IN THE MORNING.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
9 TO 12 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND NW 6 FT AT
6 SECONDS.
FRI
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 8 TO
11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND NW 5 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 6 TO 9 FT. WAVE
DETAIL: NE 9 FT AT 9 SECONDS AND N 4 FT AT 6 SECONDS.
SAT
N WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: NE 6 FT
AT 9 SECONDS AND NW 2 FT AT 6 SECONDS.
SAT NIGHT
W WINDS AROUND 5 KT. SEAS 3 TO 5 FT.
SUN AND SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
MON AND MON NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT
WITH GUSTS UP TO 20 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.
ANZ255-221500-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT. SEAS
9 TO 12 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS. PATCHY FOG. RAIN LIKELY. VSBY 1 TO 3 NM.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT. SEAS 9 TO
13 FT, SUBSIDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE DETAIL: NE
12 FT AT 9 SECONDS AND N 6 FT AT 6 SECONDS, BECOMING NE 11 FT AT
9 SECONDS AND N 5 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING. A
CHANCE OF LIGHT RAIN IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
7 TO 10 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. WAVE DETAIL: NE 9 FT AT 9 SECONDS AND
NW 5 FT AT 5 SECONDS.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 10 TO 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
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: NE 5 FT AT 9 SECONDS AND NW 2 FT AT 3 SECONDS.
SUN AND SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
MON AND MON NIGHT
W WINDS 5 TO 10 KT, BECOMING NW 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.
ANZ256-221500-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
NE WINDS 25 TO 30 KT. GUSTS UP TO 45 KT. SEAS 9 TO
12 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS. PATCHY FOG. A CHANCE OF LIGHT RAIN. VSBY 1 TO 3 NM.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 9 TO
12 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS AND N 7 FT AT
6 SECONDS.
THU NIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
6 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, SUBSIDING TO 4 TO
6 FT IN THE AFTERNOON. WAVE DETAIL: N 7 FT AT 6 SECONDS, BECOMING
N 6 FT AT 6 SECONDS.
FRI NIGHT
NE 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 AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 9 SECONDS AND NW 2 FT AT 3 SECONDS.
SUN THROUGH MON NIGHT
NW 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.
ANZ232-221500-
NANTUCKET SOUND-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
5 TO 7 FT. WAVE DETAIL: N 7 FT AT 6 SECONDS. PATCHY FOG. RAIN
LIKELY. A CHANCE OF LIGHT RAIN. VSBY 1 TO 3 NM.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 40 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 35 KT. SEAS
5 TO 7 FT. WAVE DETAIL: N 6 FT AT 6 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.
FRI NIGHT
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 9 SECONDS AND N 1 FOOT AT 3 SECONDS.
SUN THROUGH MON NIGHT
NW WINDS 10 TO 15 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.
ANZ233-221500-
VINEYARD SOUND-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS. A CHANCE OF LIGHT
RAIN.
THU
N WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT. WAVE DETAIL: N 6 FT AT 5 SECONDS.
THU NIGHT
N WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. 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
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS.
FRI NIGHT
NE WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 5 SECONDS.
SUN THROUGH MON NIGHT
NW 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.
ANZ234-221500-
BUZZARDS BAY-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS. A CHANCE OF LIGHT
RAIN.
THU
N WINDS 20 TO 25 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 5 SECONDS.
THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
AROUND 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS.
FRI
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS.
FRI NIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: N 2 FT AT 5 SECONDS, BECOMING
NE 1 FOOT AT 3 SECONDS AND N 1 FOOT AT 7 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: N 1 FOOT AT 3 SECONDS.
SUN THROUGH MON NIGHT
NW WINDS 5 TO 10 KT. SEAS 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.
ANZ235-221500-
RHODE ISLAND SOUND-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 8 FT. WAVE DETAIL: N 8 FT AT 7 SECONDS. A CHANCE OF LIGHT
RAIN.
THU
N WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: N 8 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 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS.
FRI NIGHT
NE WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
SUN THROUGH MON NIGHT
NW WINDS 10 TO 15 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.
ANZ237-221500-
BLOCK ISLAND SOUND-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 8 FT. WAVE DETAIL: E 8 FT AT 9 SECONDS AND N 6 FT AT
6 SECONDS. A SLIGHT CHANCE OF LIGHT RAIN.
THU
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: NE
8 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
4 TO 6 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
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 6 SECONDS AND N 1 FOOT AT 2 SECONDS.
SUN THROUGH MON NIGHT
NW 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.
ANZ230-221500-
BOSTON HARBOR-
1003 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THURSDAY NIGHT
OVERNIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR ENTRANCE.
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 WITH GUSTS UP TO 25 KT. WAVES
AROUND 2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR ENTRANCE.
FRI
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT
AT THE OUTER HARBOR ENTRANCE.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT
2 TO 4 FT AT THE OUTER HARBOR ENTRANCE.
SAT AND SAT NIGHT
W WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
SUN THROUGH MON NIGHT
NW 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.
ANZ236-221500-
NARRAGANSETT BAY-
1003 PM EDT WED OCT 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
N WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT.
GUSTS UP TO 30 KT. WAVES AROUND 3 FT. A SLIGHT CHANCE OF LIGHT
RAIN.
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 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT.
FRI
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT.
FRI NIGHT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
SAT AND SAT NIGHT
W WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
SUN THROUGH MON NIGHT
NW 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.
ANZ280-221500-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1003 PM EDT WED OCT 21 2026
...GALE WARNING IN EFFECT FROM 8 AM EDT THURSDAY THROUGH FRIDAY
AFTERNOON...
OVERNIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
8 TO 10 FT. WAVE DETAIL: E 10 FT AT 9 SECONDS AND NW 1 FOOT AT
4 SECONDS. A CHANCE OF LIGHT RAIN.
THU
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 8 TO
10 FT. WAVE DETAIL: NE 10 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
8 TO 11 FT, BUILDING TO 10 TO 12 FT AFTER MIDNIGHT. WAVE DETAIL:
N 11 FT AT 7 SECONDS, BECOMING NE 11 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 8 TO 11 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS
AND N 7 FT AT 7 SECONDS.
FRI NIGHT
N 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 9 SECONDS AND
NW 5 FT AT 7 SECONDS, BECOMING NE 7 FT AT 9 SECONDS AND N 3 FT AT
6 SECONDS.
SAT
NW WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: NE 6 FT
AT 9 SECONDS AND NW 4 FT AT 5 SECONDS.
SAT NIGHT
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
SUN THROUGH MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ281-221500-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 25 TO 30 KT. GUSTS UP TO 45 KT. SEAS 11 TO
14 FT. WAVE DETAIL: E 13 FT AT 10 SECONDS AND N 6 FT AT
7 SECONDS. PATCHY FOG. RAIN. VSBY 1 TO 3 NM, DECREASING TO 1 NM
OR LESS.
THU
N WINDS 25 TO 30 KT, INCREASING TO 30 TO 35 KT IN THE
AFTERNOON. GUSTS UP TO 45 KT. SEAS 11 TO 14 FT. WAVE DETAIL: NE
13 FT AT 9 SECONDS AND N 7 FT AT 7 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF LIGHT RAIN IN THE MORNING WITH VSBY 1 TO
3 NM.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
11 TO 14 FT. WAVE DETAIL: NE 13 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 10 TO 13 FT. WAVE DETAIL: NE 13 FT AT 9 SECONDS
AND NW 7 FT AT 8 SECONDS.
FRI NIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 8 TO 11 FT, SUBSIDING TO 7 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, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: NE 7 FT AT 10 SECONDS AND
NW 3 FT AT 8 SECONDS.
SAT NIGHT
NW WINDS AROUND 5 KT. SEAS 4 TO 6 FT.
SUN
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SUN NIGHT THROUGH MON NIGHT
NW 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.
ANZ282-221500-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON
OVERNIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT. SEAS
13 TO 15 FT. WAVE DETAIL: NE 15 FT AT 9 SECONDS AND N 6 FT AT
7 SECONDS. PATCHY FOG. RAIN. VSBY 1 TO 3 NM, DECREASING TO 1 NM
OR LESS.
THU
N WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT. SEAS 13 TO
16 FT. WAVE DETAIL: NE 16 FT AT 9 SECONDS AND NW 7 FT AT
7 SECONDS. PATCHY FOG IN THE MORNING. A CHANCE OF LIGHT RAIN IN
THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
11 TO 15 FT. WAVE DETAIL: NE 15 FT AT 9 SECONDS AND NW 7 FT AT
7 SECONDS.
FRI
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 9 TO
13 FT. WAVE DETAIL: NE 12 FT AT 9 SECONDS AND NW 5 FT AT
7 SECONDS.
FRI NIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 10 TO 15 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, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: NE 7 FT AT 10 SECONDS AND
NW 2 FT AT 5 SECONDS.
SAT NIGHT
N WINDS AROUND 5 KT. SEAS 5 TO 6 FT.
SUN
NW WINDS AROUND 5 KT. SEAS 4 TO 6 FT.
SUN NIGHT THROUGH MON NIGHT
NW 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.
ANZ283-221500-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1003 PM EDT WED OCT 21 2026
..GALE WARNING IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT. SEAS
14 TO 15 FT. WAVE DETAIL: NE 15 FT AT 10 SECONDS AND N 7 FT AT
7 SECONDS. PATCHY FOG. RAIN LIKELY. A CHANCE OF LIGHT RAIN. VSBY
1 TO 3 NM.
THU
N WINDS 30 TO 35 KT, DIMINISHING TO 25 TO 30 KT IN THE
AFTERNOON. GUSTS UP TO 45 KT. SEAS 13 TO 15 FT, SUBSIDING TO
11 TO 15 FT IN THE AFTERNOON. WAVE DETAIL: NE 15 FT AT 9 SECONDS
AND N 7 FT AT 7 SECONDS. A CHANCE OF LIGHT RAIN IN THE MORNING.
THU NIGHT
N WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
9 TO 13 FT. WAVE DETAIL: NE 11 FT AT 9 SECONDS AND N 8 FT AT
7 SECONDS.
FRI
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. 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 5 TO 8 FT. WAVE DETAIL:
NE 8 FT AT 10 SECONDS AND NW 4 FT AT 5 SECONDS.
SAT
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: NE 5 FT AT 10 SECONDS AND
NW 2 FT AT 4 SECONDS.
SAT NIGHT
NW WINDS AROUND 5 KT. SEAS 3 TO 5 FT.
SUN
NW WINDS AROUND 5 KT. SEAS 3 TO 5 FT.
SUN NIGHT THROUGH MON NIGHT
NW WINDS 10 TO 15 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.
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