368
FZUS51 KBOX 161705
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
104 PM EDT WED SEP 16 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-170600-
104 PM EDT WED SEP 16 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES OVERHEAD TODAY BRINGING DRY CONDITIONS AND
SOUTHWESTERLY WINDS. COLD FRONT WILL CROSS THE WATERS THU NIGHT INTO
EARLY FRI. SHOWERS POSSIBLE LATE THU INTO EARLY FRI. HIGH PRES
BUILDS BACK IN ACROSS THE WATERS SAT.
ANZ250-170600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND E 2 FT AT 7 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 4 SECONDS AND SW 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS.
FRI
W WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT, BECOMING NW
IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
3 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING S 5 TO 10 KT. SEAS 2 TO 4 FT.
SUN AND SUN NIGHT
S WINDS 5 TO 10 KT, BECOMING E. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
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.
ANZ251-170600-
MASSACHUSETTS BAY AND IPSWICH BAY-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
2 FT AT 3 SECONDS AND E 2 FT AT 9 SECONDS.
THU
N WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND S 1 FOOT AT
3 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 4 SECONDS AND E 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND W 1 FOOT AT 2 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SW 2 FT AT
7 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING S 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
S WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT.
SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
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.
ANZ231-170600-
CAPE COD BAY-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 1 FOOT AT 2 SECONDS AND N 1 FOOT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 4 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 5 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 7 SECONDS, BECOMING E 2 FT AT 8 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS
AND W 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS AROUND 10 KT, BECOMING N IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT
3 SECONDS AND W 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE
MORNING.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: N 4 FT AT 4 SECONDS AND SW 1 FOOT AT
4 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE AROUND 5 KT. SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A
CHANCE OF SHOWERS.
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.
ANZ254-170600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS
AND E 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND NW 2 FT AT
3 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE AROUND 5 KT. SEAS 2 TO 4 FT.
SUN AND SUN NIGHT
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ255-170600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 6 SECONDS AND NW 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 6 SECONDS AND E 2 FT AT 9 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E
2 FT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS AROUND 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND
SW 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 4 SECONDS AND W 2 FT AT 5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 15 TO 20 KT, BECOMING E 5 TO 10 KT.
SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ256-170600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS
AND E 2 FT AT 8 SECONDS.
FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NW IN
THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS
AND NW 2 FT AT 4 SECONDS.
FRI NIGHT
N WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N
4 FT AT 4 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 15 TO 20 KT, BECOMING SE AROUND
10 KT. SEAS 2 TO 4 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO
20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ232-170600-
NANTUCKET SOUND-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 3 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND W
1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND W
1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SW
1 FOOT AT 5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
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.
ANZ233-170600-
VINEYARD SOUND-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 5 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 8 SECONDS, BECOMING W 1 FOOT AT 3 SECONDS AND NE 1 FOOT
AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NW IN
THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS
AND E 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND SW 2 FT AT
5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT, BECOMING SE 5 TO
10 KT. SEAS AROUND 2 FT, THEN 1 FOOT OR LESS.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
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.
ANZ234-170600-
BUZZARDS BAY-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 4 SECONDS AND E
1 FOOT AT 5 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 5 SECONDS.
THU
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 8 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND W 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND
SW 1 FOOT AT 5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT, BECOMING SE 5 TO
10 KT. SEAS AROUND 2 FT, THEN 1 FOOT OR LESS.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
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.
ANZ235-170600-
RHODE ISLAND SOUND-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
2 FT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND E 1 FOOT AT 7 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND NE 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NW
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 4 SECONDS AND E 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
FRI NIGHT
N WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 3 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT, BECOMING E 15 TO
20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ237-170600-
BLOCK ISLAND SOUND-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 1 FOOT AT
8 SECONDS.
FRI
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
N 1 FOOT AT 5 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND NW 1 FOOT AT
3 SECONDS.
SAT AND SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ230-170600-
BOSTON HARBOR-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TONIGHT
SW WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
THU
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SAT AND SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING S. WAVES
1 FOOT OR LESS.
SUN AND SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING E. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS.
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.
ANZ236-170600-
NARRAGANSETT BAY-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. WAVES AROUND 2 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS.
THU
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS AROUND 10 KT, BECOMING N IN THE AFTERNOON. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
SAT AND SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING SE. WAVES
AROUND 2 FT, THEN 1 FOOT OR LESS.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT, BECOMING E. GUSTS UP
TO 20 KT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS.
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.
ANZ280-170600-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT
9 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E
2 FT AT 8 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 3 SECONDS AND E 2 FT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT
7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT.
FRI
W WINDS 10 TO 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS
AND W 2 FT AT 4 SECONDS. SHOWERS LIKELY IN THE MORNING.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: N
4 FT AT 5 SECONDS AND SW 1 FOOT AT 4 SECONDS, BECOMING N 4 FT AT
6 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN AND SUN NIGHT
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ281-170600-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 9 SECONDS AND NE 2 FT AT 7 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE 2 FT
AT 7 SECONDS AND E 2 FT AT 8 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT
7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS AROUND 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS
AND NW 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: NE 5 FT AT 7 SECONDS AND N 3 FT AT
4 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
SUN NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
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.
ANZ282-170600-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TONIGHT
SW WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND E 3 FT AT 9 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W
3 FT AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
FRI
W WINDS 10 TO 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS
AND NW 3 FT AT 5 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND E
1 FOOT AT 7 SECONDS.
SAT AND SAT NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING E 5 TO 10 KT. SEAS 3 TO 4 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
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.
ANZ283-170600-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
104 PM EDT WED SEP 16 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 6 SECONDS AND SW 1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 2 FT AT
8 SECONDS.
FRI
W WINDS AROUND 15 KT, BECOMING NW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS
AND NW 3 FT AT 5 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND
SW 3 FT AT 5 SECONDS.
SAT AND SAT NIGHT
NE WINDS 15 TO 20 KT, BECOMING E AROUND
10 KT. SEAS 3 TO 4 FT.
SUN AND SUN NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO
20 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
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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