901
FZUS51 KBOX 111104
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 AM EDT MON MAY 11 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-120000-
703 AM EDT MON MAY 11 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES WILL TRACK WELL S OF THE WATERS MON. HIGH PRES BUILDS INTO
THE REGION TUE, MOVING OFFSHORE WED. A COLD FRONT AND AREA OF LOW
PRES WILL MOVE ACROSS NEW ENG AND THE WATERS THU INTO THU EVENING,
THEN OFFSHORE FRI.
ANZ250-120000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 AM EDT MON MAY 11 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SE THIS AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS THIS MORNING.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND NW 2 FT AT
3 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. PATCHY FOG. A CHANCE
OF SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 3 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.
ANZ251-120000-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 AM EDT MON MAY 11 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SE THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND NW 1 FOOT AT
3 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS MORNING.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND SW 1 FOOT AT
3 SECONDS.
TUE
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND N 2 FT AT 3 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH 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 7 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 3 FT AT
7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS AFTER
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
BECOMING E 10 TO 15 KT. SEAS 2 TO 3 FT. PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. PATCHY FOG. A CHANCE
OF SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 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.
ANZ231-120000-
CAPE COD BAY-
703 AM EDT MON MAY 11 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING NE THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
9 SECONDS. SHOWERS LIKELY, MAINLY THIS MORNING.
TONIGHT
SW WINDS AROUND 5 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 11 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE
N WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 9 SECONDS AND NW 1 FOOT AT
3 SECONDS.
TUE NIGHT
SW WINDS AROUND 5 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: NE 2 FT AT 6 SECONDS
AND NW 1 FOOT AT 3 SECONDS, BECOMING W 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 5 SECONDS.
WED
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
3 SECONDS AND NE 1 FOOT AT 4 SECONDS.
WED NIGHT
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT,
BECOMING S 5 TO 10 KT. SEAS 2 TO 3 FT. PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. PATCHY FOG.
FRI NIGHT
W 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.
ANZ254-120000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 AM EDT MON MAY 11 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND
NW 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
TONIGHT
S WINDS AROUND 5 KT, BECOMING NW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND SE 2 FT AT
11 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND W 1 FOOT AT 4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT
4 SECONDS AND E 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND E 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, BECOMING S 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. PATCHY FOG. SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. PATCHY FOG.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 4 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.
ANZ255-120000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 AM EDT MON MAY 11 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND
NW 2 FT AT 5 SECONDS. SHOWERS LIKELY.
TONIGHT
SW WINDS AROUND 5 KT, BECOMING NW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND SW 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
TUE
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND
NW 2 FT AT 6 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
E 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 1 FOOT AT
12 SECONDS. PATCHY FOG AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
BECOMING SW 10 TO 15 KT. SEAS 3 TO 5 FT. PATCHY FOG. SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. PATCHY FOG.
FRI NIGHT
W WINDS AROUND 10 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.
ANZ256-120000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 AM EDT MON MAY 11 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT THIS AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT
THIS AFTERNOON. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND W 1 FOOT AT
8 SECONDS, BECOMING SE 4 FT AT 8 SECONDS AND SW 1 FOOT AT
8 SECONDS. SHOWERS LIKELY, MAINLY THIS MORNING.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND SW 2 FT AT
8 SECONDS.
TUE
N WINDS 10 TO 15 KT, BECOMING W 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND
N 2 FT AT 4 SECONDS.
TUE NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: SE 3 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS AROUND 3 FT. WAVE DETAIL: SE
3 FT AT 6 SECONDS AND SE 1 FOOT AT 11 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. PATCHY FOG. SHOWERS.
THU NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 4 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 5 TO 10 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.
ANZ232-120000-
NANTUCKET SOUND-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT THIS
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS
AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS.
TONIGHT
SW WINDS AROUND 5 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND SW 1 FOOT AT
5 SECONDS.
TUE
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT
7 SECONDS AND NW 1 FOOT AT 3 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 5 SECONDS AND E 1 FOOT AT 7 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND
E 1 FOOT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 1 FOOT AT
12 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
BECOMING SW 10 TO 15 KT. SEAS 2 TO 3 FT. PATCHY FOG. SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. PATCHY FOG.
FRI NIGHT
W 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.
ANZ233-120000-
VINEYARD SOUND-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND W 2 FT AT
9 SECONDS. SHOWERS LIKELY, MAINLY THIS MORNING.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS.
TUE
N WINDS AROUND 10 KT, BECOMING W IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND NW 1 FOOT AT
4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 7 SECONDS.
WED
SW 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: S 3 FT AT
6 SECONDS AND S 1 FOOT AT 11 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 1 FOOT AT
12 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
BECOMING SW 5 TO 10 KT. SEAS 2 TO 3 FT. PATCHY FOG. SHOWERS.
FRI AND FRI NIGHT
W 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.
ANZ234-120000-
BUZZARDS BAY-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND W 1 FOOT AT
6 SECONDS. SHOWERS LIKELY, MAINLY THIS MORNING.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND SE 1 FOOT AT
11 SECONDS.
TUE
N WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 5 SECONDS AND S 1 FOOT AT
11 SECONDS.
TUE 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 3 SECONDS
AND SE 1 FOOT AT 7 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 1 FOOT AT
13 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
BECOMING SW 5 TO 10 KT. SEAS 2 TO 3 FT. PATCHY FOG. SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. PATCHY FOG. A
CHANCE OF SHOWERS.
FRI NIGHT
W 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.
ANZ235-120000-
RHODE ISLAND SOUND-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND W 1 FOOT AT
8 SECONDS. SHOWERS LIKELY, MAINLY THIS MORNING.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND SW 1 FOOT AT
7 SECONDS.
TUE
N WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
NW 2 FT AT 4 SECONDS.
TUE NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 2 FT AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
WED
SW 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: S 3 FT AT
6 SECONDS AND SE 1 FOOT AT 11 SECONDS.
WED NIGHT
S WINDS AROUND 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS
LIKELY AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT.
THU
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
3 FT. PATCHY FOG. SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W 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.
ANZ237-120000-
BLOCK ISLAND SOUND-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND W 1 FOOT AT
7 SECONDS. SHOWERS LIKELY THIS MORNING. A SLIGHT CHANCE OF
SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND SW 2 FT AT
7 SECONDS.
TUE
N WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND NW 1 FOOT AT
5 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING.
SHOWERS AFTER MIDNIGHT.
THU
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. PATCHY FOG. SHOWERS.
THU NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W 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.
ANZ230-120000-
BOSTON HARBOR-
703 AM EDT MON MAY 11 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SE THIS AFTERNOON. WAVES
1 FOOT OR LESS. A SLIGHT CHANCE OF SHOWERS THIS MORNING.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
TUE
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
TUE NIGHT
S WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
WED
S 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. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT. SHOWERS. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING E 5 TO 10 KT. WAVES 2 TO 3 FT, THEN 1 FOOT OR LESS.
PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG. A
CHANCE OF SHOWERS.
FRI 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.
ANZ236-120000-
NARRAGANSETT BAY-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING W THIS AFTERNOON. WAVES
2 TO 3 FT. A CHANCE OF SHOWERS THIS MORNING. A SLIGHT CHANCE OF
SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
AROUND 2 FT.
TUE
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. WAVES
AROUND 2 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. WAVES 2 TO 3 FT.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY AFTER MIDNIGHT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT. PATCHY FOG. SHOWERS.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. WAVES 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.
ANZ280-120000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 AM EDT MON MAY 11 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING W THIS AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND W 2 FT AT
5 SECONDS. A CHANCE OF SHOWERS THIS MORNING. A SLIGHT CHANCE OF
SHOWERS THIS AFTERNOON.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE
NW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND NW 2 FT AT 3 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT. PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. PATCHY FOG. A CHANCE
OF SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 4 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.
ANZ281-120000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: SE 6 FT AT 8 SECONDS AND
W 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS THIS MORNING, THEN
SHOWERS LIKELY THIS AFTERNOON. PATCHY FOG THIS MORNING WITH VSBY
1 NM OR LESS.
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS AND SW 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND NW 2 FT AT 5 SECONDS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND NW 2 FT AT 4 SECONDS.
WED AND WED NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND E 1 FOOT AT
12 SECONDS.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 5 FT. PATCHY FOG. SHOWERS.
FRI
W WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. PATCHY FOG. A CHANCE
OF SHOWERS.
FRI NIGHT
W WINDS 10 TO 15 KT. SEAS 5 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.
ANZ282-120000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND
SW 2 FT AT 7 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS THIS
MORNING, THEN SHOWERS THIS AFTERNOON. VSBY 1 NM OR LESS THIS
MORNING.
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: SE
4 FT AT 8 SECONDS AND SW 1 FOOT AT 7 SECONDS. PATCHY FOG IN THE
EVENING. SHOWERS LIKELY IN THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 3 FT AT
8 SECONDS AND W 2 FT AT 6 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
E 3 FT AT 7 SECONDS AND SW 2 FT AT 3 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT
7 SECONDS.
WED NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND E 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
BECOMING SW 10 TO 15 KT. SEAS 4 TO 5 FT. PATCHY FOG. SHOWERS.
FRI
W WINDS 5 TO 10 KT. SEAS 5 TO 6 FT. PATCHY FOG.
FRI NIGHT
W WINDS AROUND 10 KT. SEAS 5 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.
ANZ283-120000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 AM EDT MON MAY 11 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NW
5 TO 10 KT THIS AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT
THIS AFTERNOON. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND NW 2 FT AT
7 SECONDS, BECOMING SE 4 FT AT 8 SECONDS AND SW 2 FT AT
7 SECONDS. A CHANCE OF SHOWERS THIS MORNING, THEN SHOWERS LIKELY
THIS AFTERNOON.
TONIGHT
SW WINDS AROUND 5 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND S 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
TUE
N WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND
NW 2 FT AT 4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
WED
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS. PATCHY FOG AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
THU
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. PATCHY FOG. SHOWERS.
THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. PATCHY FOG. A
CHANCE OF SHOWERS.
FRI
W WINDS AROUND 10 KT. SEAS AROUND 5 FT. PATCHY FOG.
FRI NIGHT
W WINDS 10 TO 15 KT. SEAS 5 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.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page