382
FZUS51 KBOX 271104
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 AM EDT MON APR 27 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-280000-
704 AM EDT MON APR 27 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES NEAR WELL SOUTHEAST OF 40N/70W WILL CONTINUE TO DRIFT
SOUTHEAST TODAY, WITH HIGH PRES BUILDING IN FROM THE NORTH. HIGH
PRES THEN REMAINS CONTROL OF OUR WATERS EARLY THIS WEEK. LOW PRES
THEN APPROACHES FROM THE WEST WED AND INTENSIFIES OFF THE COAST THU
EVENTUALLY LIFTING INTO MAINE FRI.
ANZ250-280000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 AM EDT MON APR 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
TUESDAY NIGHT...
TODAY
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND N 1 FOOT AT 2 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
4 FT AT 12 SECONDS AND SE 4 FT AT 13 SECONDS.
TUE
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT
AT 8 SECONDS AND SE 5 FT AT 10 SECONDS.
TUE NIGHT
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL:
E 6 FT AT 10 SECONDS AND N 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND SE
2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, BECOMING NE. SEAS 4 TO
6 FT. SHOWERS.
FRI
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W WINDS 15 TO 20 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.
ANZ251-280000-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT THIS AFTERNOON. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING NE 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 7 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 11 SECONDS AND NE 2 FT AT 4 SECONDS.
TUE
NE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT
AT 8 SECONDS AND S 4 FT AT 11 SECONDS.
TUE NIGHT
NE WINDS AROUND 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL:
E 5 FT AT 8 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 10 SECONDS AND NE 2 FT AT 7 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND SE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
E WINDS AROUND 15 KT, BECOMING N. SEAS 3 TO
5 FT. SHOWERS.
FRI
W WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W WINDS 15 TO 20 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.
ANZ231-280000-
CAPE COD BAY-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND E 2 FT AT
12 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND E 2 FT AT 11 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
WED
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT
AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
WED NIGHT
E WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 10 SECONDS AND
NE 1 FOOT AT 2 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT, BECOMING W 15 TO
20 KT. SEAS 2 TO 3 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-280000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 2 FT AT 3 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 12 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE
NE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT
AT 9 SECONDS AND N 2 FT AT 4 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 5 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N
3 FT AT 5 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND NE 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
WED NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND E
3 FT AT 5 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS AROUND 15 KT, BECOMING SW. SEAS
4 TO 6 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 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.
ANZ255-280000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 4 FT AT 12 SECONDS AND SE 3 FT AT 7 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND S 3 FT AT 9 SECONDS.
TUE
NE WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 9 SECONDS AND N 3 FT AT 4 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 5 TO 7 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND N
4 FT AT 5 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 10 SECONDS AND N 3 FT AT 4 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND NE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 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.
ANZ256-280000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND E 4 FT AT 12 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND S 4 FT AT 7 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND N
2 FT AT 4 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
4 TO 5 FT. WAVE DETAIL: NE 5 FT AT 9 SECONDS AND E 5 FT AT
10 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND E 2 FT AT 5 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 5 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 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.
ANZ232-280000-
NANTUCKET SOUND-
704 AM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND NW 1 FOOT AT
3 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE
EVENING. SEAS 2 TO 4 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND E
2 FT AT 12 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND NW 2 FT AT 4 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
3 FT AT 9 SECONDS AND N 2 FT AT 4 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 2 FT
AT 6 SECONDS AND E 2 FT AT 10 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
2 FT AT 5 SECONDS AND E 2 FT AT 10 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS AROUND 15 KT, BECOMING W. SEAS 2 TO
4 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 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.
ANZ233-280000-
VINEYARD SOUND-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
7 SECONDS.
TONIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 11 SECONDS AND N
1 FOOT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND N
2 FT AT 4 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 8 SECONDS AND N 1 FOOT AT
3 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 4 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W 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.
ANZ234-280000-
BUZZARDS BAY-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
7 SECONDS.
TONIGHT
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 11 SECONDS AND
N 1 FOOT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND NW 2 FT
AT 3 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
9 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 2 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT, BECOMING W 15 TO
20 KT. SEAS AROUND 2 FT. SHOWERS.
FRI AND FRI NIGHT
W 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.
ANZ235-280000-
RHODE ISLAND SOUND-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT THIS
AFTERNOON. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND
NE 2 FT AT 3 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND SE 4 FT AT 10 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 10 SECONDS AND N 2 FT AT 4 SECONDS.
WED
NE WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: NE 4 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 10 SECONDS AND S 3 FT AT 20 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO
20 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.
ANZ237-280000-
BLOCK ISLAND SOUND-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT, BECOMING E WITH GUSTS UP TO 20 KT
THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS
AND N 1 FOOT AT 3 SECONDS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 9 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE
NE WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT
AT 9 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND N 2 FT AT 4 SECONDS.
WED
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND NE 3 FT AT
9 SECONDS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
E 3 FT AT 10 SECONDS AND SE 2 FT AT 5 SECONDS. SHOWERS AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 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.
ANZ230-280000-
BOSTON HARBOR-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TUE
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
TUE NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT
2 TO 4 FT AT THE OUTER HARBOR ENTRANCE.
WED
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT 2 TO
4 FT AT THE OUTER HARBOR ENTRANCE.
WED NIGHT
E WINDS 10 TO 15 KT. WAVES 1 FOOT OR LESS, THEN 2 TO
3 FT AFTER MIDNIGHT. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
E WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT.
WAVES 2 TO 3 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 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.
ANZ236-280000-
NARRAGANSETT BAY-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT, BECOMING E WITH GUSTS UP TO 20 KT
THIS AFTERNOON. WAVES AROUND 2 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE
NE WINDS AROUND 10 KT. WAVES AROUND 2 FT.
TUE NIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
AROUND 2 FT.
WED NIGHT
SE WINDS AROUND 10 KT. WAVES AROUND 2 FT. SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. SHOWERS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. WAVES 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.
ANZ280-280000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS. PATCHY FOG THIS
MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 12 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND S 4 FT AT 8 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND NW 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS.
WED AND WED NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 6 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS THROUGH THE DAY. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
E WINDS 15 TO 20 KT, BECOMING SE 20 TO
25 KT. GUSTS UP TO 30 KT. SEAS 6 TO 7 FT. WAVE DETAIL: SE 7 FT AT
10 SECONDS AND S 2 FT AT 4 SECONDS. SHOWERS.
FRI
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 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.
ANZ281-280000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 12 SECONDS AND N 3 FT AT 4 SECONDS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: E 7 FT AT 8 SECONDS AND N 2 FT AT 4 SECONDS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
8 FT, BUILDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: E
7 FT AT 8 SECONDS AND NE 3 FT AT 5 SECONDS, BECOMING E 7 FT AT
9 SECONDS AND N 2 FT AT 4 SECONDS.
TUE NIGHT
N WINDS 15 TO 20 KT, BECOMING NE 10 TO 15 KT AFTER
MIDNIGHT. SEAS 8 TO 10 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND
N 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
WED
NE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT. WAVE DETAIL: E 8 FT
AT 10 SECONDS AND NE 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
WED NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND E 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
THU AND THU NIGHT
SE WINDS 15 TO 20 KT, BECOMING S 20 TO
25 KT. SEAS 6 TO 7 FT. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 5 TO 7 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.
ANZ282-280000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT, BUILDING TO 6 TO 9 FT THIS AFTERNOON. WAVE DETAIL: E 6 FT
AT 12 SECONDS AND SE 4 FT AT 7 SECONDS, BECOMING E 7 FT AT
9 SECONDS AND N 3 FT AT 4 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS 15 TO 20 KT. GUSTS UP TO 35 KT, DECREASING TO
25 KT AFTER MIDNIGHT. SEAS 6 TO 9 FT. WAVE DETAIL: E 8 FT AT
9 SECONDS AND N 3 FT AT 4 SECONDS.
TUE
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 7 TO
9 FT. WAVE DETAIL: E 8 FT AT 9 SECONDS AND N 4 FT AT 6 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
7 TO 9 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 3 FT AT
4 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 6 TO 8 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 3 FT AT 5 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT. WAVE DETAIL: E
6 FT AT 9 SECONDS AND NE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
6 FT. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 7 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT. SEAS 5 TO 7 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.
ANZ283-280000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 AM EDT MON APR 27 2026
TODAY
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT THIS
AFTERNOON. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT
AT 8 SECONDS AND N 3 FT AT 4 SECONDS.
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND NE 3 FT AT 4 SECONDS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 4 FT AT 5 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 6 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N
3 FT AT 5 SECONDS.
WED
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT
AT 10 SECONDS AND N 2 FT AT 4 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND SE 2 FT AT 6 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
6 FT. SHOWERS.
THU NIGHT
W WINDS 20 TO 25 KT. SEAS AROUND 6 FT. A CHANCE OF
SHOWERS.
FRI
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT.
FRI NIGHT
W WINDS 20 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.
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