391
FZUS51 KBOX 301405
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1005 AM EDT SUN AUG 30 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-310300-
1005 AM EDT SUN AUG 30 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES MOVES PAST THE WATERS TODAY. A BACKDOOR COLD FRONT
EXPECTED OVER THE MA WATERS MON MORNING, WHICH THEN SHOULD LINGER
OVER OR NEAR THE WATERS INTO MID WEEK.
ANZ250-310300-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT
7 SECONDS.
TONIGHT
SW 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 3 SECONDS AND E 2 FT AT 7 SECONDS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT
3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 2 FT AT 4 SECONDS AND W 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS.
WED
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. SHOWERS LIKELY.
THU
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 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.
ANZ251-310300-
MASSACHUSETTS BAY AND IPSWICH BAY-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 7 SECONDS AND W 1 FOOT AT 2 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND S 1 FOOT
AT 3 SECONDS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: N 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 3 SECONDS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE AND TUE NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 2 FT AT
4 SECONDS. SHOWERS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. SHOWERS
LIKELY.
THU AND THU NIGHT
SE 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.
ANZ231-310300-
CAPE COD BAY-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT
4 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 3 SECONDS AND NE 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS IN
THE EVENING.
MON
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT
AT 4 SECONDS.
MON NIGHT
S WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 3 SECONDS.
TUE AND TUE NIGHT
E WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 3 SECONDS AND NW 1 FOOT
AT 3 SECONDS. SHOWERS LIKELY. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 10 SECONDS.
WED NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. SHOWERS
LIKELY.
THU AND THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW. 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.
ANZ254-310300-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT
5 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING, THEN SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND SE 2 FT AT 12 SECONDS. SHOWERS LIKELY,
MAINLY IN THE EVENING.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED NIGHT THROUGH THU NIGHT
S WINDS 5 TO 10 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.
ANZ255-310300-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT
5 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND SE 2 FT AT 12 SECONDS. SHOWERS LIKELY IN
THE EVENING. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 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.
ANZ256-310300-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND W 2 FT AT
3 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND W 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING, THEN SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 4 SECONDS AND W 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED NIGHT AND THU
SE WINDS AROUND 10 KT, BECOMING S. SEAS 3 TO
4 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 3 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.
ANZ232-310300-
NANTUCKET SOUND-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 2 FT AT 3 SECONDS AND SW 2 FT AT 4 SECONDS.
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND W
2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND SW 1 FOOT AT
5 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 2 SECONDS AND N 1 FOOT AT 3 SECONDS.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND N 1 FOOT
AT 3 SECONDS. SHOWERS LIKELY.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 4 SECONDS AND W 1 FOOT AT 3 SECONDS. SHOWERS LIKELY,
MAINLY IN THE EVENING.
WED
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 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.
ANZ233-310300-
VINEYARD SOUND-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO
20 KT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND SW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND W
2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: E 1 FOOT AT 2 SECONDS AND N
1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS
AND N 1 FOOT AT 4 SECONDS. SHOWERS LIKELY.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 2 FT AT 3 SECONDS AND S 1 FOOT AT 3 SECONDS. SHOWERS LIKELY,
MAINLY IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS AROUND 2 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. SHOWERS
LIKELY.
THU AND THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ234-310300-
BUZZARDS BAY-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO
20 KT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND E 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
W 10 TO 15 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND E 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 2 SECONDS AND NW 1 FOOT AT 3 SECONDS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS. SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND
SE 1 FOOT AT 4 SECONDS. SHOWERS LIKELY, MAINLY IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS AROUND 2 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. SHOWERS
LIKELY.
THU AND THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ235-310300-
RHODE ISLAND SOUND-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
W WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 1 FOOT AT
7 SECONDS.
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND
SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 2 SECONDS AND S 1 FOOT AT 5 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS. SHOWERS LIKELY.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W
2 FT AT 3 SECONDS AND SE 2 FT AT 4 SECONDS. SHOWERS LIKELY,
MAINLY IN THE EVENING.
WED
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY.
THU
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS AROUND 10 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.
ANZ237-310300-
BLOCK ISLAND SOUND-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND NE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND N 1 FOOT AT
2 SECONDS.
MON NIGHT
S WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 1 FOOT AT 2 SECONDS AND S 1 FOOT AT 5 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. SHOWERS LIKELY.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 2 FT AT 3 SECONDS AND SE 2 FT AT 4 SECONDS. SHOWERS LIKELY,
MAINLY IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY.
THU AND THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ230-310300-
BOSTON HARBOR-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. WAVES AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS.
MON
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
TUE AND TUE NIGHT
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SHOWERS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
WED NIGHT AND THU
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS,
THEN AROUND 2 FT. SHOWERS LIKELY.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. 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.
ANZ236-310300-
NARRAGANSETT BAY-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT
WITH GUSTS UP TO 20 KT. WAVES 2 TO 3 FT.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. WAVES
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. SHOWERS.
TUE NIGHT
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. SHOWERS
LIKELY, MAINLY IN THE EVENING.
WED
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
WED NIGHT AND THU
SE WINDS 5 TO 10 KT, BECOMING S. WAVES
AROUND 2 FT. SHOWERS LIKELY.
THU NIGHT
W WINDS 5 TO 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.
ANZ280-310300-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SW 2 FT AT
5 SECONDS.
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND W 2 FT AT 4 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS
AND W 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND
SE 2 FT AT 12 SECONDS. A CHANCE OF SHOWERS.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT.
WED NIGHT AND THU
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
THU NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 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.
ANZ281-310300-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
5 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E 3 FT AT 4 SECONDS AND SE
2 FT AT 13 SECONDS. A CHANCE OF SHOWERS.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT.
WED NIGHT AND THU
SE WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A
CHANCE OF SHOWERS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 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.
ANZ282-310300-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
W WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND S 2 FT AT
7 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT.
MON
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND N 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT
AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
3 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
WED AND WED NIGHT
E WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. A CHANCE
OF SHOWERS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
THU NIGHT
SW WINDS AROUND 10 KT. SEAS 3 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.
ANZ283-310300-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1005 AM EDT SUN AUG 30 2026
THIS AFTERNOON
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 2 FT AT
3 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 4 FT AT 4 SECONDS AND SW 3 FT AT 4 SECONDS.
A CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY AFTER
MIDNIGHT.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND N 1 FOOT AT 2 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 4 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND
NW 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 5 SECONDS AND S 3 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT AND THU
SE WINDS AROUND 10 KT, BECOMING S. SEAS 4 TO
5 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 3 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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