884
FZUS51 KBOX 211704
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
104 PM EDT TUE APR 21 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-220600-
104 PM EDT TUE APR 21 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES BUILDS OVER THE WATERS TODAY, BUT BEGINS TO WEAKEN AND
SHIFT EAST TONIGHT. LOW PRES BRINGS CLOUDS AND SCATTERED SHOWERS
OVER THE WATERS ON WED. WHILE HIGH PRES BUILDS IN FOR LATE IN THE
WEEK AND WEEKEND, IT WILL BE UNSETTLED WITH PERIODS OF CLOUDS.
ANZ250-220600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 5 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT 6 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
A CHANCE OF RAIN IN THE AFTERNOON.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
2 FT AT 8 SECONDS. A CHANCE OF RAIN IN THE EVENING.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: N 3 FT AT 5 SECONDS AND E 3 FT AT 14 SECONDS.
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.
ANZ251-220600-
MASSACHUSETTS BAY AND IPSWICH BAY-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 6 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND NE 2 FT
AT 5 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 2 FT AT
7 SECONDS. A CHANCE OF RAIN.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND
E 2 FT AT 7 SECONDS. A CHANCE OF RAIN IN THE EVENING.
THU
W WINDS 5 TO 10 KT, BECOMING NW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND SW 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS
AND SE 1 FOOT AT 6 SECONDS, BECOMING NW 1 FOOT AT 3 SECONDS AND
SE 1 FOOT AT 7 SECONDS.
FRI THROUGH SAT NIGHT
S 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.
ANZ231-220600-
CAPE COD BAY-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
TONIGHT
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND SE 1 FOOT AT 3 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND NE 1 FOOT
AT 5 SECONDS. A CHANCE OF RAIN IN THE MORNING, THEN RAIN LIKELY
IN THE AFTERNOON.
WED NIGHT
S 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 E
1 FOOT AT 6 SECONDS, BECOMING S 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 7 SECONDS. A CHANCE OF RAIN IN THE EVENING.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 7 SECONDS.
FRI THROUGH SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS.
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.
ANZ254-220600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT 7 SECONDS.
TONIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT
8 SECONDS.
WED
S 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 E 2 FT AT
6 SECONDS. A CHANCE OF RAIN IN THE AFTERNOON.
WED NIGHT
SE WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS
AND E 2 FT AT 9 SECONDS. A CHANCE OF RAIN IN THE EVENING.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS.
FRI THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: NE 3 FT AT 7 SECONDS AND E 3 FT AT 14 SECONDS.
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.
ANZ255-220600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
WED
S 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 W 2 FT AT 5 SECONDS.
RAIN LIKELY IN THE AFTERNOON.
WED NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 4 FT AT 5 SECONDS AND W 2 FT AT 6 SECONDS. A CHANCE OF
RAIN IN THE EVENING.
THU
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 2 FT AT 9 SECONDS.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND E 2 FT AT 8 SECONDS.
FRI THROUGH SAT NIGHT
E 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.
ANZ256-220600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 5 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND
E 2 FT AT 6 SECONDS.
WED
S WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS. RAIN LIKELY.
WED NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING E 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 4 FT AT 7 SECONDS AND W 2 FT AT 5 SECONDS. RAIN LIKELY
IN THE EVENING.
THU
NW WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 2 FT AT
10 SECONDS.
THU NIGHT
NW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 6 SECONDS AND E 2 FT AT 8 SECONDS.
FRI THROUGH SAT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. 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.
ANZ232-220600-
NANTUCKET SOUND-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 1 FOOT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NW
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 6 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT
AT 7 SECONDS. RAIN LIKELY IN THE AFTERNOON.
WED NIGHT
SE WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT
AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT
4 SECONDS AND W 2 FT AT 5 SECONDS. A CHANCE OF RAIN IN THE
EVENING.
THU
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
W 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 7 SECONDS.
FRI THROUGH SAT NIGHT
E 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.
ANZ233-220600-
VINEYARD SOUND-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 3 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS AROUND 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 9 SECONDS, BECOMING SW 2 FT AT 5 SECONDS AND E 1 FOOT
AT 8 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. A CHANCE OF RAIN IN THE MORNING, THEN RAIN LIKELY IN
THE AFTERNOON.
WED NIGHT
SE WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT
AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT
6 SECONDS AND E 1 FOOT AT 10 SECONDS. A CHANCE OF RAIN IN THE
EVENING.
THU
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
FRI THROUGH SAT NIGHT
E 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.
ANZ234-220600-
BUZZARDS BAY-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NE 1 FOOT AT 2 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SW 2 FT AT 7 SECONDS.
A CHANCE OF RAIN IN THE MORNING, THEN RAIN LIKELY IN THE
AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF RAIN
IN THE EVENING.
THU
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND W 1 FOOT AT 2 SECONDS.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT 6 SECONDS.
FRI THROUGH SAT NIGHT
E 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.
ANZ235-220600-
RHODE ISLAND SOUND-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NW 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND E
1 FOOT AT 6 SECONDS, BECOMING SW 2 FT AT 4 SECONDS AND E 1 FOOT
AT 7 SECONDS.
WED
S WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS. RAIN LIKELY.
WED NIGHT
SE WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W
2 FT AT 5 SECONDS. RAIN LIKELY IN THE EVENING.
THU
NW WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NW 1 FOOT AT
3 SECONDS.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
FRI THROUGH SAT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 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.
ANZ237-220600-
BLOCK ISLAND SOUND-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 5 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND E
1 FOOT AT 6 SECONDS, BECOMING SW 2 FT AT 4 SECONDS AND E 1 FOOT
AT 7 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS. RAIN LIKELY.
WED NIGHT
SE WINDS 10 TO 15 KT, BECOMING E AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
1 FOOT AT 7 SECONDS. A CHANCE OF RAIN IN THE EVENING.
THU
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING SE. SEAS
AROUND 2 FT.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 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.
ANZ230-220600-
BOSTON HARBOR-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
SE WINDS 10 TO 15 KT. WAVES 1 FOOT OR LESS.
TONIGHT
S WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
WED
S WINDS AROUND 10 KT. WAVES AROUND 2 FT. A CHANCE OF RAIN.
WED NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF RAIN IN THE EVENING.
THU
W WINDS 5 TO 10 KT, BECOMING NW IN THE AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. A CHANCE OF
SHOWERS IN THE AFTERNOON.
THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI THROUGH SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR
LESS.
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.
ANZ236-220600-
NARRAGANSETT BAY-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TONIGHT
S WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. RAIN LIKELY.
WED NIGHT
SE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT.
WAVES AROUND 2 FT. RAIN LIKELY IN THE EVENING.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
FRI THROUGH SAT
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT NIGHT
E 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.
ANZ280-220600-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT 7 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND N 2 FT AT 5 SECONDS.
WED
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
E 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
2 FT AT 8 SECONDS. A CHANCE OF RAIN AFTER MIDNIGHT.
THU
SW WINDS AROUND 10 KT, BECOMING W IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
8 SECONDS. A CHANCE OF RAIN IN THE MORNING.
THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
FRI THROUGH SAT NIGHT
W 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.
ANZ281-220600-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: N 3 FT AT 6 SECONDS AND SW 1 FOOT AT 7 SECONDS.
TONIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT
7 SECONDS.
WED
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND E 2 FT AT 7 SECONDS. A CHANCE OF RAIN IN THE
AFTERNOON.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SW 3 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS. A CHANCE OF RAIN.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND NW 2 FT AT 4 SECONDS.
FRI THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: N 3 FT AT 6 SECONDS AND S 3 FT AT 7 SECONDS.
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.
ANZ282-220600-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT 7 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND S 1 FOOT AT
7 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND NE 2 FT AT
6 SECONDS. RAIN LIKELY IN THE AFTERNOON.
WED NIGHT
SE WINDS 15 TO 20 KT, BECOMING E 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND E
3 FT AT 9 SECONDS. RAIN LIKELY, MAINLY IN THE EVENING.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 6 SECONDS AND W 2 FT AT 3 SECONDS.
FRI THROUGH SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SW 3 FT AT 7 SECONDS AND E 3 FT AT 15 SECONDS.
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.
ANZ283-220600-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
104 PM EDT TUE APR 21 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND
SW 2 FT AT 7 SECONDS.
WED
S WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF RAIN IN THE
MORNING, THEN RAIN LIKELY IN THE AFTERNOON.
WED NIGHT
SE WINDS 15 TO 20 KT, BECOMING E 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND
E 3 FT AT 9 SECONDS. RAIN LIKELY IN THE EVENING.
THU
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS 3 TO
4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 3 FT AT 9 SECONDS.
THU NIGHT
NW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
NW 3 FT AT 3 SECONDS AND SW 3 FT AT 7 SECONDS.
FRI THROUGH SAT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. 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.
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