141
FZUS51 KBOX 252005
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
405 PM EDT SAT APR 25 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-260900-
405 PM EDT SAT APR 25 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES IS EXPECTED TO TRACK THROUGH THE SOUTHERN OFFSHORE WATERS
SUN INTO MON BEFORE MOVING INTO THE MARITIMES. HIGH PRES THEN
REASSERTS ITSELF INTO THE REGION EARLY NEXT WEEK.
ANZ250-260900-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
405 PM EDT SAT APR 25 2026
TONIGHT
SW WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND E 2 FT AT
14 SECONDS.
SUN
NE WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 13 SECONDS
AND N 1 FOOT AT 3 SECONDS.
SUN NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 12 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON
NE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
MON NIGHT
NE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
E 4 FT AT 9 SECONDS AND E 2 FT AT 5 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND NE 2 FT AT 6 SECONDS.
TUE NIGHT
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 4 TO 6 FT.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. A CHANCE OF
SHOWERS.
WED NIGHT THROUGH THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 5 TO 7 FT. SHOWERS LIKELY.
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.
ANZ251-260900-
MASSACHUSETTS BAY AND IPSWICH BAY-
405 PM EDT SAT APR 25 2026
TONIGHT
S WINDS AROUND 5 KT, BECOMING W AROUND 5 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND
NW 1 FOOT AT 3 SECONDS.
SUN
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 6 SECONDS AND E 2 FT AT 13 SECONDS.
SUN NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 7 SECONDS AND NW 1 FOOT AT 2 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
MON NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: E 4 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
WED
NE WINDS AROUND 10 KT. SEAS 3 TO 5 FT. A CHANCE OF
SHOWERS.
WED NIGHT AND THU
E WINDS AROUND 10 KT. SEAS 3 TO 5 FT.
SHOWERS LIKELY.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 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.
ANZ231-260900-
CAPE COD BAY-
405 PM EDT SAT APR 25 2026
TONIGHT
LIGHT AND VARIABLE WINDS. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN
NE WINDS AROUND 5 KT. SEAS AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS. WAVE DETAIL: E 2 FT AT 9 SECONDS AND N
1 FOOT AT 4 SECONDS, BECOMING N 1 FOOT AT 4 SECONDS AND S 1 FOOT
AT 7 SECONDS.
SUN NIGHT
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: N 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
NE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND N
1 FOOT AT 3 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 9 SECONDS AND NE 2 FT AT 11 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT THROUGH THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. SHOWERS LIKELY.
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.
ANZ254-260900-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
405 PM EDT SAT APR 25 2026
TONIGHT
E WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
NE WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND E
2 FT AT 13 SECONDS. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND S
2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: E 4 FT AT 7 SECONDS AND N 3 FT AT 4 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. WAVE DETAIL: E 5 FT AT 6 SECONDS AND N 1 FOOT AT
3 SECONDS.
TUE AND 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 N 4 FT AT
4 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 7 FT. A CHANCE OF
SHOWERS.
WED NIGHT THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 5 TO 7 FT. SHOWERS LIKELY.
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.
ANZ255-260900-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 9 SECONDS AND SE 2 FT AT 15 SECONDS. A SLIGHT CHANCE OF
SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 4 SECONDS AND E 2 FT AT
10 SECONDS. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: E 3 FT AT 4 SECONDS AND E 3 FT AT
8 SECONDS. A CHANCE OF RAIN. PATCHY FOG IN THE EVENING.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND NE 3 FT AT 4 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. WAVE DETAIL: E 6 FT AT 8 SECONDS AND N 3 FT AT
4 SECONDS.
TUE AND TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND N 3 FT AT
5 SECONDS.
WED
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. A CHANCE OF SHOWERS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. SHOWERS LIKELY.
THU
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. SHOWERS LIKELY.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 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.
ANZ256-260900-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 7 SECONDS. A CHANCE OF
SHOWERS THIS EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
SUN
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND E 2 FT AT 13 SECONDS.
A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND NW 1 FOOT AT
2 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND NE 3 FT AT 4 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 15 TO 20 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 5 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E 6 FT
AT 10 SECONDS AND NE 3 FT AT 6 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT AND THU
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT. SHOWERS
LIKELY.
THU NIGHT
NW WINDS 15 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.
ANZ232-260900-
NANTUCKET SOUND-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS AROUND 5 KT THIS EVENING, BECOMING LIGHT AND
VARIABLE. SEAS AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS
AND S 1 FOOT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS.
SUN
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 9 SECONDS AND NW 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
SUN NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND
E 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND NE 2 FT AT 3 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND E
3 FT AT 8 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND E 3 FT AT 11 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT AND THU
E WINDS AROUND 10 KT. SEAS 2 TO 4 FT.
SHOWERS LIKELY.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ233-260900-
VINEYARD SOUND-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 2 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE
OF SHOWERS.
SUN
NE WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 2 SECONDS
AND S 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 7 SECONDS AND NE 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE
2 FT AT 8 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 11 SECONDS AND NE 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS.
WED NIGHT AND THU
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. SHOWERS
LIKELY.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ234-260900-
BUZZARDS BAY-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: E 1 FOOT AT 2 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE
OF SHOWERS.
SUN
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 3 SECONDS, BECOMING E 1 FOOT AT 2 SECONDS AND N 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
SUN NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 9 SECONDS AND N 1 FOOT AT 2 SECONDS.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND
SE 2 FT AT 9 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
1 FOOT AT 2 SECONDS AND S 1 FOOT AT 10 SECONDS. A CHANCE OF
SHOWERS.
WED NIGHT AND THU
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SHOWERS LIKELY.
THU NIGHT
NW 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.
ANZ235-260900-
RHODE ISLAND SOUND-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 3 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF
SHOWERS.
SUN
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 5 SECONDS AND E 3 FT AT 10 SECONDS.
MON
NE WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND NE 2 FT AT 3 SECONDS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND N
2 FT AT 5 SECONDS.
WED
NE WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 10 SECONDS AND NE 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT AND THU
E WINDS AROUND 10 KT. SEAS 3 TO 4 FT.
SHOWERS LIKELY.
THU NIGHT
NW WINDS 10 TO 15 KT WITH 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.
ANZ237-260900-
BLOCK ISLAND SOUND-
405 PM EDT SAT APR 25 2026
TONIGHT
SE WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 3 SECONDS
AND N 1 FOOT AT 3 SECONDS. SHOWERS LIKELY.
SUN
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
SUN NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 4 SECONDS AND E
3 FT AT 10 SECONDS.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND NE 2 FT AT 4 SECONDS.
MON NIGHT THROUGH TUE NIGHT
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 NE
3 FT AT 5 SECONDS.
WED
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT
AT 10 SECONDS AND NE 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT AND THU
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. SHOWERS
LIKELY.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ230-260900-
BOSTON HARBOR-
405 PM EDT SAT APR 25 2026
TONIGHT
S WINDS AROUND 5 KT, BECOMING W AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
SUN
NE WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT.
WED
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
WED NIGHT THROUGH THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR
ENTRANCE. SHOWERS LIKELY.
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.
ANZ236-260900-
NARRAGANSETT BAY-
405 PM EDT SAT APR 25 2026
TONIGHT
S WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS. A CHANCE OF SHOWERS.
SUN
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS
IN THE MORNING.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES 2 TO 3 FT.
WED
NE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
WED NIGHT AND THU
E WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. SHOWERS
LIKELY.
THU NIGHT
NW WINDS 10 TO 15 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.
ANZ280-260900-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
405 PM EDT SAT APR 25 2026
TONIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
SUN
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 10 SECONDS AND E 2 FT AT 13 SECONDS.
SUN NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 10 SECONDS AND E 2 FT AT 12 SECONDS.
MON
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND NE 2 FT AT
3 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND N 1 FOOT AT
2 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 10 SECONDS AND NE 1 FOOT AT
2 SECONDS.
TUE NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
7 FT. A CHANCE OF SHOWERS.
WED NIGHT THROUGH THU NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 7 TO 9 FT. SHOWERS LIKELY.
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.
ANZ281-260900-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
405 PM EDT SAT APR 25 2026
TONIGHT
NW WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 14 SECONDS AND N 2 FT AT 5 SECONDS. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
SUN
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 13 SECONDS AND E 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
SUN NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND N 2 FT AT 3 SECONDS. A CHANCE OF RAIN.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 6 FT AT 6 SECONDS AND S 2 FT AT 8 SECONDS. A
CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 8 FT. WAVE DETAIL: E 7 FT AT 7 SECONDS AND S 2 FT AT
8 SECONDS.
TUE AND TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 10 SECONDS AND NE 4 FT
AT 4 SECONDS.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 7 TO
9 FT. A CHANCE OF SHOWERS.
WED NIGHT THROUGH THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 6 TO 9 FT. SHOWERS LIKELY.
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.
ANZ282-260900-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
405 PM EDT SAT APR 25 2026
TONIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: E
3 FT AT 14 SECONDS AND N 2 FT AT 4 SECONDS. A SLIGHT CHANCE OF
SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
SUN
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND E 3 FT AT 13 SECONDS.
SHOWERS LIKELY.
SUN NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 7 SECONDS AND E 2 FT AT
12 SECONDS. SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF RAIN
AFTER MIDNIGHT. PATCHY FOG IN THE EVENING.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: E 8 FT AT 8 SECONDS AND N 4 FT AT 4 SECONDS. A
CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
6 TO 9 FT. WAVE DETAIL: E 8 FT AT 8 SECONDS AND N 4 FT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
TUE AND TUE NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 10 SECONDS AND N 5 FT AT
5 SECONDS.
WED
NE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT. A CHANCE OF SHOWERS.
WED NIGHT AND THU
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SHOWERS LIKELY.
THU NIGHT
W WINDS 15 TO 20 KT. SEAS 6 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.
ANZ283-260900-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
405 PM EDT SAT APR 25 2026
TONIGHT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND E 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS THIS EVENING, THEN SHOWERS LIKELY
AFTER MIDNIGHT.
SUN
E WINDS 15 TO 20 KT, BECOMING NE 20 TO 25 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT, BUILDING TO 4 TO
6 FT IN THE AFTERNOON. WAVE DETAIL: E 4 FT AT 4 SECONDS AND E
2 FT AT 9 SECONDS, BECOMING E 5 FT AT 5 SECONDS AND SE 3 FT AT
9 SECONDS. SHOWERS, MAINLY IN THE MORNING. PATCHY FOG IN THE
MORNING.
SUN NIGHT
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
6 FT AT 7 SECONDS AND S 2 FT AT 8 SECONDS. A CHANCE OF RAIN.
MON
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 4 FT AT 4 SECONDS. A
CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP
TO 30 KT. SEAS 6 TO 9 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND N
4 FT AT 5 SECONDS.
WED
NE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS AND N 4 FT AT 6 SECONDS.
WED NIGHT AND THU
SE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.
SHOWERS LIKELY.
THU NIGHT
NW WINDS 15 TO 20 KT. SEAS 6 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.
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