048
FZUS51 KBOX 272305
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
705 PM EDT MON APR 27 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-281200-
705 PM EDT MON APR 27 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES WELL SOUTHEAST OF 40N/70W WILL CONTINUE TO DRIFT
EVEN FURTHER SOUTHEAST TONIGHT. OTHERWISE...HIGH PRES WILL REMAIN IN
CONTROL OF OUR WATERS INTO EARLY WED. LOW PRES THEN APPROACHES FROM
THE WEST LATER WED AND INTENSIFIES OFF THE COAST THU EVENTUALLY
LIFTING INTO MAINE FRI. THIS LOW WILL CONTINUE TO LIFT NORTHWEST
INTO QUEBEC BY SAT.
ANZ250-281200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
705 PM EDT MON APR 27 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH
THURSDAY MORNING...
TONIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 10 SECONDS AND NE 2 FT AT 4 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND NE 2 FT AT
2 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND NE 1 FOOT AT
2 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 1 FOOT AT 3 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 10 SECONDS AND
SE 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
NW WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. WAVE
DETAIL: E 7 FT AT 10 SECONDS AND W 4 FT AT 4 SECONDS. SHOWERS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI THROUGH SAT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT.
SAT NIGHT
SW WINDS AROUND 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.
ANZ251-281200-
MASSACHUSETTS BAY AND IPSWICH BAY-
705 PM EDT MON APR 27 2026
TONIGHT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 8 SECONDS AND E 2 FT AT 12 SECONDS.
TUE
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT
AT 9 SECONDS AND NW 3 FT AT 7 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND NE 2 FT AT 7 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND NE 2 FT AT 6 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND SE 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
NW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 5 FT AT 10 SECONDS AND S 4 FT AT 4 SECONDS. SHOWERS.
FRI THROUGH SAT
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT.
SAT NIGHT
W 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.
ANZ231-281200-
CAPE COD BAY-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT
AT 3 SECONDS.
TUE
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND E 2 FT AT
11 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 10 SECONDS AND E
2 FT AT 11 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 11 SECONDS AND N 1 FOOT AT 2 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 10 SECONDS AND NE 1 FOOT AT 2 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 2 FT AT
3 SECONDS. SHOWERS.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. A
CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-281200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
705 PM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND SE 3 FT AT 7 SECONDS.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
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 N 3 FT AT 4 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND NE 4 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 NE 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
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 10 SECONDS AND
SE 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 3 FT AT 4 SECONDS.
SHOWERS.
THU NIGHT
S WINDS 10 TO 15 KT, BECOMING W AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 4 TO 6 FT. SHOWERS, MAINLY IN THE
EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT, BECOMING SE. 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.
ANZ255-281200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
705 PM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND SE 3 FT AT 7 SECONDS.
TUE
NE WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND N 2 FT AT 3 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N 3 FT AT
4 SECONDS.
WED
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N 3 FT AT
4 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND SE 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SE 6 FT AT 10 SECONDS AND SE 3 FT AT
6 SECONDS. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO
20 KT. SEAS 4 TO 6 FT.
SAT AND SAT NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE. 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.
ANZ256-281200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
705 PM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND E 4 FT AT 9 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND SE 3 FT AT 9 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND SE 4 FT AT
10 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT
AT 10 SECONDS AND SE 3 FT AT 10 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND NE 5 FT AT 11 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS
AND SE 3 FT AT 4 SECONDS. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. SEAS 5 TO 6 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT.
FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT, BECOMING NW. GUSTS UP
TO 20 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.
ANZ232-281200-
NANTUCKET SOUND-
705 PM EDT MON APR 27 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND E 2 FT AT
11 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND NE 2 FT AT 4 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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: NE
2 FT AT 5 SECONDS AND E 2 FT AT 10 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
2 FT AT 6 SECONDS AND E 2 FT AT 10 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 5 SECONDS AND W 2 FT AT 3 SECONDS. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING SE. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-281200-
VINEYARD SOUND-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 8 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND S 1 FOOT AT
5 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND E 2 FT AT 3 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 3 SECONDS AND SE 2 FT AT 4 SECONDS. SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. SHOWERS LIKELY, MAINLY IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
SAT AND SAT NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-281200-
BUZZARDS BAY-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 8 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND S 1 FOOT AT
5 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING N 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS.
WED NIGHT
E 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
W WINDS 15 TO 20 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND SE 2 FT AT 3 SECONDS. SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-281200-
RHODE ISLAND SOUND-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND SE 3 FT AT 12 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND E
3 FT AT 10 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 10 SECONDS AND N 2 FT AT 3 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND SE 3 FT AT 10 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND SE 3 FT AT
4 SECONDS. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-281200-
BLOCK ISLAND SOUND-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TUE
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT
AT 9 SECONDS AND E 3 FT AT 9 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND E
3 FT AT 10 SECONDS.
WED
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND E 2 FT AT
9 SECONDS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 6 SECONDS AND E 3 FT AT 10 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND SE 4 FT AT
10 SECONDS. SHOWERS.
THU NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW 5 TO 10 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-281200-
BOSTON HARBOR-
705 PM EDT MON APR 27 2026
TONIGHT
E WINDS AROUND 5 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 AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
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 AROUND 10 KT. WAVES 1 FOOT OR LESS, THEN
2 TO 3 FT AFTER MIDNIGHT. AT THE OUTER HARBOR ENTRANCE, WAVES
2 TO 4 FT. A CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS AFTER
MIDNIGHT.
THU AND THU NIGHT
NW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT.
SHOWERS.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. WAVES AROUND 2 FT.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS,
EXCEPT 2 TO 4 FT AT THE OUTER HARBOR ENTRANCE. 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.
ANZ236-281200-
NARRAGANSETT BAY-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE
NE WINDS 5 TO 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
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT.
THU
SE WINDS AROUND 10 KT, BECOMING S IN THE AFTERNOON. 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 IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT, BECOMING NW 5 TO
10 KT. 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.
ANZ280-281200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
705 PM EDT MON APR 27 2026
TONIGHT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND SE 2 FT AT
7 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND SE 1 FOOT AT
6 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND N 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 7 TO 8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND S 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS.
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 10 SECONDS AND S 1 FOOT AT
6 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND W 3 FT AT
3 SECONDS. SHOWERS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. A CHANCE OF SHOWERS.
FRI NIGHT AND SAT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 5 TO 6 FT.
SAT NIGHT
SW WINDS AROUND 10 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.
ANZ281-281200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 9 SECONDS AND S 3 FT AT 7 SECONDS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 3 FT AT 4 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND NE 4 FT AT
4 SECONDS. A CHANCE OF SHOWERS.
WED
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 6 TO 8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND NE 4 FT AT
4 SECONDS. A CHANCE OF SHOWERS.
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 10 SECONDS AND SE 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 3 FT AT 4 SECONDS.
SHOWERS.
THU NIGHT
S WINDS 10 TO 15 KT, BECOMING W 15 TO 20 KT AFTER
MIDNIGHT. SEAS 6 TO 7 FT. SHOWERS WITH A CHANCE OF TSTMS IN THE
EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 5 TO 7 FT.
SAT
SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. A CHANCE OF SHOWERS.
SAT NIGHT
SE WINDS AROUND 10 KT. SEAS 4 TO 6 FT. A CHANCE OF
SHOWERS.
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.
ANZ282-281200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: E 8 FT AT 9 SECONDS AND N 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 8 FT AT 9 SECONDS AND N 2 FT AT 4 SECONDS.
TUE NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 3 FT AT
4 SECONDS.
WED
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 3 FT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND S 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND S 3 FT AT 5 SECONDS.
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, DIMINISHING TO 15 TO
20 KT. SEAS 5 TO 7 FT.
SAT AND SAT NIGHT
W WINDS 10 TO 15 KT, BECOMING SE. SEAS 5 TO
8 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.
ANZ283-281200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
705 PM EDT MON APR 27 2026
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 4 FT AT 8 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 7 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS AND SE 4 FT AT
11 SECONDS.
WED
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 5 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND N 5 FT AT 9 SECONDS. SHOWERS LIKELY AFTER
MIDNIGHT.
THU
SE WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT AT 11 SECONDS
AND S 4 FT AT 8 SECONDS. SHOWERS.
THU NIGHT
W WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT AFTER
MIDNIGHT. SEAS 6 TO 7 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO
20 KT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT.
SAT
W WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. A CHANCE OF SHOWERS.
SAT NIGHT
NW 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.
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