283
FZUS51 KBOX 080503
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 AM EDT TUE SEP 8 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-081800-
103 AM EDT TUE SEP 8 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES CONTINUES TO BUILD IN OVER THE WATERS FOR THE FIRST HALF
OF THIS WEEK. THIS CONTINUES, WITH TRANQUIL WEATHER, THROUGH AT
LEAST MID WEEK BEFORE LOW PRES APPROACHES ON WED/THU.
ANZ250-081800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 9 SECONDS AND NW 1 FOOT AT 3 SECONDS.
TUE
NW WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND E 1 FOOT AT
9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
SE WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT AND THU
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS THROUGH THE DAY.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS.
FRI THROUGH SAT NIGHT
S 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.
ANZ251-081800-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 8 SECONDS AND NW 1 FOOT AT 2 SECONDS.
TUE
W WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: S 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 7 SECONDS.
WED
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN 2 TO 3 FT IN
THE AFTERNOON. WAVE DETAIL: SE 1 FOOT AT 2 SECONDS AND E 1 FOOT
AT 9 SECONDS, BECOMING SE 2 FT AT 4 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED NIGHT AND THU
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS THROUGH THE DAY.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE
1 FOOT AT 10 SECONDS.
FRI THROUGH SAT NIGHT
S 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.
ANZ231-081800-
CAPE COD BAY-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 5 SECONDS.
TUE
NW WINDS 5 TO 10 KT, BECOMING N IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: N
1 FOOT AT 4 SECONDS, BECOMING NW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 6 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NW 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 7 SECONDS.
WED
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN 2 TO 3 FT IN
THE AFTERNOON. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND NE 1 FOOT
AT 6 SECONDS, BECOMING S 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT
5 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT. GUSTS UP TO 25 KT, INCREASING
TO 35 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND E 1 FOOT AT 8 SECONDS.
THU
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 35 KT, DIMINISHING
TO 10 TO 15 KT WITH GUSTS UP TO 25 KT IN THE AFTERNOON. SEAS 3 TO
5 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE
EVENING. SEAS 2 TO 3 FT.
FRI THROUGH SAT NIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO
20 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.
ANZ254-081800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS AND W 1 FOOT AT 4 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT, BECOMING SW 20 TO 25 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT
AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
THU
SW 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: SW
6 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE AROUND 5 KT. SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
SE 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.
ANZ255-081800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
4 SECONDS AND E 2 FT AT 9 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND E
1 FOOT AT 9 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT, BUILDING TO
4 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND
SE 1 FOOT AT 10 SECONDS, BECOMING SW 6 FT AT 7 SECONDS AND SE
1 FOOT AT 10 SECONDS.
THU
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: SW 8 FT AT 7 SECONDS AND E 1 FOOT AT
9 SECONDS.
THU NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING W 10 TO 15 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. A CHANCE
OF SHOWERS.
FRI
NW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT THROUGH SAT NIGHT
SE 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.
ANZ256-081800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 2 FT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT
AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT, BUILDING TO 5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: SW
5 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS, BECOMING SW 7 FT
AT 7 SECONDS AND SE 1 FOOT AT 10 SECONDS.
THU AND THU NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: SW 7 FT AT 7 SECONDS AND SE 4 FT AT
9 SECONDS. A CHANCE OF SHOWERS.
FRI
NW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT THROUGH SAT NIGHT
SE 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.
ANZ232-081800-
NANTUCKET SOUND-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NW
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED NIGHT AND THU
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS.
THU NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING W 10 TO 15 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE
OF SHOWERS.
FRI THROUGH SAT NIGHT
S 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.
ANZ233-081800-
VINEYARD SOUND-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: NW
1 FOOT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN 2 TO 3 FT
IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 9 SECONDS, BECOMING SW 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 35 KT AFTER MIDNIGHT.
SEAS 3 TO 4 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS,
BECOMING SW 6 FT AT 6 SECONDS AND SE 1 FOOT AT 11 SECONDS.
THU
SW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 35 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SW
6 FT AT 7 SECONDS AND SE 3 FT AT 8 SECONDS. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE
EVENING. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI THROUGH SAT NIGHT
S 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.
ANZ234-081800-
BUZZARDS BAY-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: NW
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN 2 TO 3 FT
IN THE AFTERNOON. WAVE DETAIL: S 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING SW 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 8 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT. GUSTS UP TO 25 KT, INCREASING
TO 35 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT, BUILDING TO 4 TO 6 FT
AFTER MIDNIGHT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS, BECOMING SW 5 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS.
THU
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 6 FT AT 7 SECONDS AND SE 3 FT AT 9 SECONDS.
A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 30 KT IN THE
EVENING. SEAS 2 TO 4 FT.
FRI THROUGH SAT NIGHT
S 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.
ANZ235-081800-
RHODE ISLAND SOUND-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL: W
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS, BECOMING SW
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN 2 TO 3 FT
IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING S 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 8 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
INCREASING TO 20 TO 25 KT WITH GUSTS UP TO 35 KT AFTER MIDNIGHT.
SEAS 3 TO 4 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS,
BECOMING SW 6 FT AT 7 SECONDS AND SE 1 FOOT AT 11 SECONDS.
THU
SW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 35 KT. SEAS 5 TO 7 FT. WAVE DETAIL: SW
7 FT AT 7 SECONDS AND S 6 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 10 TO 15 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. A CHANCE OF
SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT.
SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S. 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.
ANZ237-081800-
BLOCK ISLAND SOUND-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: W 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
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 SE 1 FOOT AT 9 SECONDS.
WED
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN 2 TO 3 FT IN
THE AFTERNOON. WAVE DETAIL: S 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 9 SECONDS, BECOMING S 2 FT AT 3 SECONDS AND SE 1 FOOT AT
9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT, BUILDING TO
4 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND
SE 1 FOOT AT 9 SECONDS, BECOMING SW 5 FT AT 6 SECONDS AND SE
1 FOOT AT 10 SECONDS.
THU
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 4 FT AT
10 SECONDS. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT,
BECOMING NW AFTER MIDNIGHT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS
IN THE EVENING.
FRI
NW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
FRI NIGHT THROUGH SAT NIGHT
S 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.
ANZ230-081800-
BOSTON HARBOR-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TUE
W WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
TUE NIGHT
SE WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
WED
SE 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.
WED NIGHT AND THU
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
WAVES AROUND 2 FT. A CHANCE OF SHOWERS THROUGH THE DAY.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
FRI THROUGH SAT NIGHT
S 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.
ANZ236-081800-
NARRAGANSETT BAY-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
TUE
W WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
TUE NIGHT
S WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. WAVES 1 FOOT OR LESS, THEN 2 TO
3 FT IN THE AFTERNOON.
WED NIGHT
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. WAVES 3 TO 4 FT.
THU
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. WAVES 2 TO 4 FT. A CHANCE OF
SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT.
FRI THROUGH SAT NIGHT
S 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.
ANZ280-081800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 2 FT AT 3 SECONDS AND E 2 FT AT 9 SECONDS.
TUE
NW WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS
AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING S
15 TO 20 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 2 TO
4 FT. WAVE DETAIL: S 4 FT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT, BUILDING TO 5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: S
4 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS, BECOMING S 6 FT AT
6 SECONDS AND SE 3 FT AT 10 SECONDS. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
THU
SW 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: S 6 FT
AT 7 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING N 5 TO 10 KT. SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
SE WINDS 5 TO 10 KT, BECOMING S. 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.
ANZ281-081800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
W WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 8 SECONDS AND W 2 FT AT 4 SECONDS.
TUE
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND E 2 FT AT
9 SECONDS.
WED
SE WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT, BECOMING SW 20 TO 25 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO
6 FT AFTER MIDNIGHT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 2 FT
AT 9 SECONDS, BECOMING SW 5 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
THU
SW 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: SW
7 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS.
THU NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 5 TO 8 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT.
FRI NIGHT AND SAT
NW WINDS AROUND 5 KT, BECOMING E. SEAS 2 TO
4 FT.
SAT NIGHT
SE 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.
ANZ282-081800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: NE 3 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
TUE
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 9 SECONDS AND W 2 FT AT 4 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND W 1 FOOT
AT 4 SECONDS.
WED
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT, BUILDING TO 4 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: SW
4 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING SW 6 FT AT
7 SECONDS AND SE 2 FT AT 9 SECONDS.
THU
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT. WAVE DETAIL: SW 9 FT AT 8 SECONDS AND SE 2 FT AT 9 SECONDS.
THU NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 7 TO 9 FT, SUBSIDING TO 5 TO 8 FT AFTER MIDNIGHT. A CHANCE
OF SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
FRI NIGHT THROUGH SAT NIGHT
SE 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.
ANZ283-081800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 AM EDT TUE SEP 8 2026
REST OF TONIGHT
NW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
TUE
W WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
WED
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT, BUILDING TO
5 TO 8 FT AFTER MIDNIGHT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND E
1 FOOT AT 10 SECONDS, BECOMING SW 8 FT AT 7 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
THU
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 7 TO
9 FT. WAVE DETAIL: SW 9 FT AT 8 SECONDS AND E 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
THU NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 5 TO 8 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT THROUGH SAT NIGHT
SE 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.
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