961
FZUS51 KBOX 071702
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
102 PM EDT TUE APR 7 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-080600-
102 PM EDT TUE APR 7 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
WEAK LOW PRES CROSSES THE WATERS TODAY FOLLOWED BY GUSTY NW WINDS
THIS EVENING. THEN A LARGE HIGH PRES SYSTEM BUILDS IN FROM THE WEST
ON WED AND MOVES EAST OF THE WATERS THU. A WEAK COLD FRONT CROSSES
THE WATERS LATE FRI INTO EARLY SAT FOLLOWED BY ANOTHER HIGH PRES
BUILDING IN FOR SUN.
ANZ250-080600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
102 PM EDT TUE APR 7 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...
THIS AFTERNOON
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT.
WED NIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
FRI
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT.
SAT AND SAT NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 5 TO 10 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.
ANZ251-080600-
MASSACHUSETTS BAY AND IPSWICH BAY-
102 PM EDT TUE APR 7 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. SCATTERED SHOWERS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
3 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT.
THU
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT.
THU NIGHT
S WINDS 15 TO 20 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 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.
ANZ231-080600-
CAPE COD BAY-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. SCATTERED SHOWERS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
3 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
S WINDS AROUND 5 KT. SEAS AROUND 2 FT.
THU AND THU NIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 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.
ANZ254-080600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
102 PM EDT TUE APR 7 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...
THIS AFTERNOON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. SCATTERED SHOWERS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
10 TO 15 KT IN THE AFTERNOON. SEAS 2 TO 4 FT.
WED NIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT.
THU AND THU NIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
FRI NIGHT THROUGH SAT NIGHT
N WINDS 10 TO 15 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.
ANZ255-080600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. ISOLATED SHOWERS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT.
WED
N WINDS 15 TO 20 KT, BECOMING NE 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 10 TO 15 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.
ANZ256-080600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
10 TO 15 KT IN THE AFTERNOON. SEAS 2 TO 4 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
THU
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
FRI
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 10 TO 15 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.
ANZ232-080600-
NANTUCKET SOUND-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT.
WED
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NE
10 TO 15 KT IN THE AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
THU
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 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.
ANZ233-080600-
VINEYARD SOUND-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS AROUND 3 FT. ISOLATED SHOWERS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT.
WED
N WINDS 15 TO 20 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI THROUGH SAT NIGHT
NE WINDS 10 TO 15 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.
ANZ234-080600-
BUZZARDS BAY-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. ISOLATED SHOWERS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 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.
ANZ235-080600-
RHODE ISLAND SOUND-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
AROUND 3 FT.
WED
N WINDS 15 TO 20 KT, BECOMING E AROUND 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
THU
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI THROUGH SAT NIGHT
NE WINDS 10 TO 15 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.
ANZ237-080600-
BLOCK ISLAND SOUND-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING
THIS AFTERNOON
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
THU
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI THROUGH SAT NIGHT
N 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.
ANZ230-080600-
BOSTON HARBOR-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
THIS AFTERNOON
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
WAVES 1 FOOT OR LESS. A CHANCE OF SHOWERS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. WAVES
AROUND 2 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. WAVES AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS.
WED NIGHT
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT,
BECOMING SW AFTER MIDNIGHT. WAVES AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS.
THU
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
SW 5 TO 10 KT AFTER MIDNIGHT. WAVES AROUND 2 FT.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT. WAVES 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.
ANZ236-080600-
NARRAGANSETT BAY-
102 PM EDT TUE APR 7 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
THIS AFTERNOON
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT.
WED
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. WAVES 2 TO 3 FT IN THE MORNING, THEN
1 FOOT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
FRI THROUGH SAT NIGHT
N WINDS 10 TO 15 KT. WAVES 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.
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WWW.WEATHER.GOV/BOSTON
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