376
FZUS51 KBOX 112307
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
706 PM EDT TUE AUG 11 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-121200-
706 PM EDT TUE AUG 11 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A COLD FRONT PASSES OVER THE WATERS TONIGHT. THE NEXT FRONTAL
PASSAGE SOMETIME WED NIGHT INTO THU EVENING MAY BRING SCATTERED
SHOWERS AND STORMS. A HIGH PRES THEN BUILDS IN FROM THE W LATER FRI
INTO THIS WEEKEND.
ANZ250-121200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT THIS EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: W
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS, BECOMING N 1 FOOT
AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 6 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND N 1 FOOT AT
3 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT
3 SECONDS.
THU NIGHT THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND S
1 FOOT AT 3 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
SAT NIGHT AND SUN
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SUN NIGHT
S 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.
ANZ251-121200-
MASSACHUSETTS BAY AND IPSWICH BAY-
706 PM EDT TUE AUG 11 2026
TONIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
NW 1 FOOT AT 2 SECONDS AND S 1 FOOT AT 4 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND S 1 FOOT
AT 4 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND SE 1 FOOT
AT 2 SECONDS.
THU
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: SE 1 FOOT AT 2 SECONDS AND W 1 FOOT
AT 2 SECONDS.
THU NIGHT
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 3 SECONDS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SUN NIGHT
S WINDS 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.
ANZ231-121200-
CAPE COD BAY-
706 PM EDT TUE AUG 11 2026
TONIGHT
NW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: N 1 FOOT AT 2 SECONDS AND W 1 FOOT AT 2 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING NE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND NW 1 FOOT
AT 3 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND N 1 FOOT
AT 3 SECONDS.
THU
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. 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 3 SECONDS, BECOMING SW
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 3 SECONDS.
THU NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS
AND E 1 FOOT AT 3 SECONDS, BECOMING E 1 FOOT AT 2 SECONDS AND SW
1 FOOT AT 3 SECONDS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND SE 1 FOOT
AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
SUN NIGHT
SW WINDS AROUND 10 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.
ANZ254-121200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING NW
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS
AND S 2 FT AT 6 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
6 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND NW 1 FOOT AT
3 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 5 SECONDS AND NW 1 FOOT AT 3 SECONDS.
THU NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND E 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND S 2 FT AT
6 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT.
SAT AND SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT. SEAS 2 TO 4 FT.
SUN
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SUN NIGHT
S 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.
ANZ255-121200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
WED
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
2 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 7 SECONDS AND N 1 FOOT AT 2 SECONDS.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 3 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SUN NIGHT
SW WINDS 15 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.
ANZ256-121200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WED
N WINDS AROUND 5 KT, BECOMING E AROUND 5 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS
AND N 1 FOOT AT 2 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 7 SECONDS AND
S 1 FOOT AT 3 SECONDS.
THU NIGHT AND FRI
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND N 3 FT AT
4 SECONDS.
SAT AND SAT NIGHT
NW WINDS 10 TO 15 KT, BECOMING SW 5 TO
10 KT. SEAS 2 TO 4 FT.
SUN
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT.
SUN NIGHT
SW WINDS 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.
ANZ232-121200-
NANTUCKET SOUND-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND N 1 FOOT AT 2 SECONDS.
WED
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND SW 1 FOOT
AT 5 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NE 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 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 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 3 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
E 1 FOOT AT 4 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 2 SECONDS AND SW 1 FOOT AT 4 SECONDS. A CHANCE OF
SHOWERS IN THE MORNING.
FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SUN NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 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.
ANZ233-121200-
VINEYARD SOUND-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AROUND 5 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
WED
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 5 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT AND FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT
AT 6 SECONDS.
FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 4 SECONDS AND W 2 FT AT 4 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
SUN NIGHT
SW 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.
ANZ234-121200-
BUZZARDS BAY-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AROUND 5 KT AFTER MIDNIGHT. SEAS AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE
1 FOOT AT 9 SECONDS, BECOMING SW 1 FOOT AT 5 SECONDS AND SE
1 FOOT AT 9 SECONDS.
WED
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND W 1 FOOT
AT 5 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 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.
THU NIGHT AND FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 5 SECONDS.
FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 4 SECONDS AND SW 2 FT AT 6 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SUN NIGHT
SW WINDS 15 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.
ANZ235-121200-
RHODE ISLAND SOUND-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
WED
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND NW 1 FOOT AT
4 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT 2 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT
4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT AND FRI
W 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 SE 1 FOOT
AT 6 SECONDS.
FRI NIGHT
NW 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 S 2 FT AT
6 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SUN NIGHT
SW WINDS 15 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.
ANZ237-121200-
BLOCK ISLAND SOUND-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND W 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
N WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: S
2 FT AT 5 SECONDS AND NW 1 FOOT AT 4 SECONDS, BECOMING N 1 FOOT
AT 2 SECONDS AND S 1 FOOT AT 5 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: W 1 FOOT AT 2 SECONDS
AND S 1 FOOT AT 4 SECONDS, BECOMING S 1 FOOT AT 2 SECONDS AND W
1 FOOT AT 2 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS
AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT AND FRI
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 2 FT AT 3 SECONDS AND N 2 FT AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SUN NIGHT
SW 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.
ANZ230-121200-
BOSTON HARBOR-
706 PM EDT TUE AUG 11 2026
TONIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
THU
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT THROUGH SUN
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SUN NIGHT
S WINDS AROUND 10 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.
ANZ236-121200-
NARRAGANSETT BAY-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. WAVES
AROUND 2 FT THIS EVENING, THEN 1 FOOT OR LESS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
WED
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU
W 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 THROUGH FRI NIGHT
N WINDS 5 TO 10 KT. WAVES AROUND
2 FT.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH 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.
ANZ280-121200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
706 PM EDT TUE AUG 11 2026
TONIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING W AROUND 5 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS
AND S 1 FOOT AT 6 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS.
THU
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
3 SECONDS.
THU NIGHT AND FRI
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
3 SECONDS.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: N 5 FT AT 8 SECONDS AND NW 4 FT AT
5 SECONDS.
SAT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT.
SAT NIGHT AND SUN
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN NIGHT
S 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.
ANZ281-121200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W
3 FT AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
N WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF. PATCHY
FOG IN THE AFTERNOON. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS IN
THE AFTERNOON.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS. PATCHY FOG. VSBY
1 NM OR LESS.
THU
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
THU NIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND
SE 1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND N 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
SAT AND SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT. SEAS 3 TO 5 FT.
SUN
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SUN NIGHT
S 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.
ANZ282-121200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND E
1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
NW WINDS AROUND 5 KT, BECOMING NE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND N 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
WED NIGHT
NW WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT
AT 3 SECONDS.
THU
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
5 SECONDS AND SE 1 FOOT AT 9 SECONDS.
THU NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
W 2 FT AT 6 SECONDS AND E 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI
NW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: W 3 FT
AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SUN NIGHT
SW 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.
ANZ283-121200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
706 PM EDT TUE AUG 11 2026
TONIGHT
W WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND
SE 1 FOOT AT 9 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
N WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND N 1 FOOT AT 2 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING.
WED NIGHT
W WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS AND N 1 FOOT
AT 3 SECONDS.
THU
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS.
THU NIGHT AND FRI
NW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: W 4 FT AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. A CHANCE
OF SHOWERS THROUGH THE DAY.
FRI NIGHT
NW WINDS 10 TO 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT AT
5 SECONDS AND N 3 FT AT 5 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
SUN NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 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.
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