533
FZUS51 KBOX 312304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 PM EDT MON AUG 31 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-011200-
704 PM EDT MON AUG 31 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A WARM FRONT SLOWLY LIFTS NORTH TOMORROW THROUGH THU. LOW PRES AND
ITS ASSOCIATED COLD FRONT WILL CROSS THE WATERS THU AFTERNOON INTO
THU NIGHT. THIS LOW PRES SYSTEM WILL INTENSIFY AS IT LIFTS NE
TOWARDS THE CANADIAN MARITIMES FRI AND SHIFT FARTHER E BY THE
HOLIDAY WEEKEND.
ANZ250-011200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 3 SECONDS AND N 1 FOOT AT 4 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 3 SECONDS AND W 1 FOOT AT 2 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS IN THE MORNING. SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE
OF SHOWERS IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 5 SECONDS AND SE 2 FT AT 11 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND
SE 3 FT AT 10 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND S 2 FT AT
3 SECONDS. SHOWERS WITH A CHANCE OF TSTMS.
FRI THROUGH SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ251-011200-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND SE
1 FOOT AT 3 SECONDS, BECOMING S 1 FOOT AT 3 SECONDS AND NE 1 FOOT
AT 4 SECONDS.
TUE
SE 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: W 1 FOOT AT 2 SECONDS AND SE
1 FOOT AT 3 SECONDS, BECOMING SE 2 FT AT 3 SECONDS AND N 1 FOOT
AT 2 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
TUE NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS. SHOWERS
LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 2 FT
AT 4 SECONDS. SHOWERS WITH A CHANCE OF TSTMS.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ231-011200-
CAPE COD BAY-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
SE 1 FOOT AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS.
TUE
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 4 SECONDS AND NW 1 FOOT
AT 3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING.
SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 6 SECONDS AND SE 1 FOOT AT 3 SECONDS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SE 2 FT AT
3 SECONDS. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS. A CHANCE OF TSTMS IN THE
EVENING.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ254-011200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 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. PATCHY FOG IN THE AFTERNOON.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 5 SECONDS AND SE 3 FT AT 9 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
WED
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 6 SECONDS AND SE 2 FT AT 11 SECONDS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SE 3 FT AT
10 SECONDS. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W AFTER MIDNIGHT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS IN THE EVENING.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ255-011200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 PM EDT MON AUG 31 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND NE 1 FOOT AT 3 SECONDS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS. PATCHY FOG. SHOWERS LIKELY.
TUE NIGHT
E WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND SE 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 2 FT AT 11 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
NE 3 FT AT 4 SECONDS AND SE 3 FT AT 6 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND S 3 FT AT 6 SECONDS.
SHOWERS LIKELY.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. A CHANCE OF
SHOWERS.
FRI THROUGH SAT
N WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
SAT NIGHT
N WINDS 15 TO 20 KT. SEAS 3 TO 5 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.
ANZ256-011200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND NW 1 FOOT AT
4 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM IN THE
MORNING.
TUE NIGHT
E WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND SE 4 FT AT
9 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN THE
EVENING WITH VSBY 1 TO 3 NM.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
NE 4 FT AT 4 SECONDS AND SE 4 FT AT 6 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 3 FT AT 10 SECONDS.
SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS. A CHANCE OF TSTMS IN THE EVENING.
FRI THROUGH SAT NIGHT
N WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ232-011200-
NANTUCKET SOUND-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
E 1 FOOT AT 3 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 4 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM IN THE
MORNING.
TUE NIGHT
E WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND SE 2 FT AT 5 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SE 2 FT AT
4 SECONDS. SHOWERS LIKELY.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W AFTER MIDNIGHT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
FRI THROUGH SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO
25 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.
ANZ233-011200-
VINEYARD SOUND-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: E 1 FOOT AT 2 SECONDS AND N
1 FOOT AT 3 SECONDS, BECOMING E 1 FOOT AT 3 SECONDS AND N 1 FOOT
AT 3 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 4 SECONDS AND N
1 FOOT AT 4 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM
IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS AND E
1 FOOT AT 3 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN
THE EVENING.
WED
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND E 1 FOOT AT
3 SECONDS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND SE 1 FOOT AT 4 SECONDS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SE 2 FT AT
4 SECONDS. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W AFTER MIDNIGHT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
A CHANCE OF TSTMS IN THE EVENING.
FRI THROUGH SAT NIGHT
N WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ234-011200-
BUZZARDS BAY-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
SE 1 FOOT AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A SLIGHT CHANCE
OF SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 1 FOOT AT 4 SECONDS AND N 1 FOOT
AT 4 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND
SE 1 FOOT AT 4 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY
IN THE EVENING.
WED
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 10 SECONDS AND SE 1 FOOT AT 4 SECONDS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SE 2 FT AT
4 SECONDS. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. A CHANCE
OF SHOWERS. A CHANCE OF TSTMS IN THE EVENING.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ235-011200-
RHODE ISLAND SOUND-
704 PM EDT MON AUG 31 2026
TONIGHT
S 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
AFTER MIDNIGHT.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM IN THE
MORNING.
TUE NIGHT
E WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 3 FT AT
8 SECONDS. PATCHY FOG IN THE EVENING. SHOWERS LIKELY IN THE
EVENING.
WED
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND NE 1 FOOT
AT 3 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 3 FT AT
10 SECONDS. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS. A CHANCE OF TSTMS IN THE EVENING.
FRI THROUGH SAT NIGHT
N WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ237-011200-
BLOCK ISLAND SOUND-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS
AND NW 1 FOOT AT 3 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM
IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS. PATCHY FOG IN THE
EVENING. SHOWERS LIKELY IN THE EVENING.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SE 1 FOOT AT
12 SECONDS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND NE 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS. A CHANCE OF TSTMS IN THE EVENING.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ230-011200-
BOSTON HARBOR-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM IN THE
MORNING.
TUE NIGHT
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. A CHANCE OF SHOWERS.
WED
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS
AFTER MIDNIGHT.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT. SHOWERS WITH A CHANCE OF TSTMS.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES AROUND 2 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
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.
ANZ236-011200-
NARRAGANSETT BAY-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES AROUND 2 FT. PATCHY FOG.
SHOWERS. VSBY 1 TO 3 NM IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. PATCHY FOG IN THE EVENING. SHOWERS
LIKELY IN THE EVENING.
WED
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. SHOWERS
LIKELY AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE AFTERNOON.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS AND TSTMS IN THE EVENING.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES AROUND 2 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
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.
ANZ280-011200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 PM EDT MON AUG 31 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND NE 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS.
TUE NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 2 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING.
WED
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 6 SECONDS AND SE 2 FT AT 12 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SE 3 FT AT
10 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 4 FT AT
9 SECONDS. SHOWERS WITH A CHANCE OF TSTMS, THEN A CHANCE OF
SHOWERS AFTER MIDNIGHT.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT.
SAT AND SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ281-011200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 PM EDT MON AUG 31 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND N 1 FOOT AT 5 SECONDS.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND E
2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 6 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. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND SE 2 FT AT
11 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 3 FT AT
10 SECONDS.
THU AND THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS. SHOWERS LIKELY. A CHANCE OF TSTMS THROUGH THE NIGHT,
THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO 5 FT.
SAT AND SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 5 TO 8 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ282-011200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 PM EDT MON AUG 31 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND NE 1 FOOT AT 3 SECONDS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT
AT 4 SECONDS AND SW 1 FOOT AT 4 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE MORNING. SHOWERS LIKELY IN THE AFTERNOON.
TUE NIGHT
E WINDS AROUND 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND
NE 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 5 FT AT 7 SECONDS AND NE 2 FT AT 4 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
4 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS.
THU
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND SE 4 FT AT
7 SECONDS. SHOWERS LIKELY IN THE MORNING. A CHANCE OF SHOWERS IN
THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
FRI THROUGH SAT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT.
SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 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.
ANZ283-011200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 PM EDT MON AUG 31 2026
TONIGHT
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. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
TUE
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: E 2 FT AT 4 SECONDS AND W
1 FOOT AT 4 SECONDS. PATCHY FOG. SHOWERS LIKELY.
TUE NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS AND N 1 FOOT AT
4 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
WED
E WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 5 FT AT 6 SECONDS AND SE 2 FT AT 11 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 4 FT. WAVE DETAIL:
NE 4 FT AT 4 SECONDS AND E 4 FT AT 7 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND SW 3 FT
AT 4 SECONDS. A CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
FRI THROUGH SAT NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 3 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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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