542
FZUS51 KBOX 121103
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 AM EDT TUE MAY 12 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-130000-
703 AM EDT TUE MAY 12 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES BUILDS INTO THE REGION TODAY, MOVING OFFSHORE WED. A COLD
FRONT AND AREA OF LOW PRES WILL MOVE ACROSS NEW ENG AND THE WATERS
THU INTO THU EVENING, THEN OFFSHORE FRI. HIGH PRES BUILDS SOUTH OF
THE WATERS THIS WEEKEND.
ANZ250-130000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT
8 SECONDS AND NW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT
AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE MORNING. SHOWERS IN THE AFTERNOON.
THU NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NE 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS. PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. PATCHY FOG. SHOWERS
LIKELY.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP 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.
ANZ251-130000-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING E THIS AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND NW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND S 1 FOOT AT 2 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND E 2 FT AT 7 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 3 FT AT
8 SECONDS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND E 3 FT AT 8 SECONDS.
PATCHY FOG. SHOWERS.
THU NIGHT
E WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS.
PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE EVENING.
FRI
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. PATCHY FOG. SHOWERS
LIKELY.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS 2 TO 3 FT.
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.
ANZ231-130000-
CAPE COD BAY-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT THIS
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND
E 2 FT AT 9 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 4 SECONDS AND NE
1 FOOT AT 6 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 4 SECONDS.
WED
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS.
WED NIGHT
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 1 FOOT AT
7 SECONDS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING.
SHOWERS IN THE AFTERNOON.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 7 SECONDS. PATCHY FOG. SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. SHOWERS LIKELY.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP 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.
ANZ254-130000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT
AT 8 SECONDS AND NW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND SW
2 FT AT 3 SECONDS.
WED
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS.
WED NIGHT
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND SE 4 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING.
SHOWERS IN THE AFTERNOON.
THU NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NE 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 4 FT AT 9 SECONDS AND S 2 FT AT 6 SECONDS. PATCHY FOG.
SHOWERS.
FRI
NW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 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.
ANZ255-130000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND
NW 2 FT AT 4 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 8 SECONDS AND W 2 FT AT 4 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 5 SECONDS AND SE 3 FT AT 11 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE MORNING. SHOWERS IN THE AFTERNOON.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND S 4 FT AT
8 SECONDS. PATCHY FOG. SHOWERS.
FRI
W WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 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.
ANZ256-130000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND NW 2 FT AT 4 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE DETAIL:
SE 3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
WED
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND E 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND
SE 4 FT AT 10 SECONDS. PATCHY FOG. SHOWERS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS. SHOWERS, MAINLY
IN THE EVENING. PATCHY FOG IN THE EVENING.
FRI
NW WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 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.
ANZ232-130000-
NANTUCKET SOUND-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT THIS
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND
E 2 FT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT. SEAS AROUND 3 FT. WAVE DETAIL:
S 3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 4 SECONDS AND SE 1 FOOT AT 11 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE AFTERNOON.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS. PATCHY FOG.
SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP 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.
ANZ233-130000-
VINEYARD SOUND-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT THIS
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS
AND E 1 FOOT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
4 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND
SE 1 FOOT AT 11 SECONDS. PATCHY FOG. SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS. PATCHY FOG.
SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A
CHANCE OF SHOWERS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP 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.
ANZ234-130000-
BUZZARDS BAY-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
9 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS,
BECOMING SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND SE 1 FOOT AT 11 SECONDS. PATCHY FOG. SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS. PATCHY FOG.
SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A
CHANCE OF SHOWERS.
SAT AND SAT NIGHT
SW 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.
ANZ235-130000-
RHODE ISLAND SOUND-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT THIS
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
NW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
WED
SW WINDS 10 TO 15 KT, BECOMING S 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 1 FOOT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS
AND SE 3 FT AT 10 SECONDS. PATCHY FOG. SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS. PATCHY FOG.
SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. A
CHANCE OF SHOWERS.
SAT AND SAT NIGHT
SW 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.
ANZ237-130000-
BLOCK ISLAND SOUND-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT THIS
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND
NW 2 FT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
WED
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 3 FT AT 9 SECONDS.
PATCHY FOG. SHOWERS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS. SHOWERS, MAINLY IN
THE EVENING. PATCHY FOG IN THE EVENING.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. A
CHANCE OF SHOWERS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP 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.
ANZ230-130000-
BOSTON HARBOR-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING E THIS AFTERNOON. WAVES
1 FOOT OR LESS.
TONIGHT
S WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
WED NIGHT
S WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. WAVES AROUND 2 FT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. PATCHY FOG. SHOWERS.
THU NIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. PATCHY
FOG. SHOWERS. A CHANCE OF TSTMS IN THE EVENING.
FRI
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG.
SHOWERS.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT.
WAVES AROUND 2 FT.
WINDS AND WAVES 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.
ANZ236-130000-
NARRAGANSETT BAY-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS AROUND 10 KT, BECOMING W THIS AFTERNOON. WAVES
AROUND 2 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT.
WED NIGHT
S WINDS 15 TO 20 KT. WAVES 2 TO 4 FT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT. PATCHY FOG. SHOWERS.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT.
WAVES 2 TO 3 FT. PATCHY FOG. SHOWERS.
FRI
NW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. PATCHY FOG. SHOWERS
LIKELY.
FRI NIGHT
NW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP 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.
ANZ280-130000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND N 2 FT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND SW 2 FT AT 3 SECONDS.
WED
S WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT WITH GUSTS
UP TO 25 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT
AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 2 FT AT
11 SECONDS.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND SE 4 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING.
SHOWERS LIKELY IN THE AFTERNOON.
THU NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND S 2 FT AT
6 SECONDS. PATCHY FOG. SHOWERS.
FRI
NE WINDS AROUND 10 KT. SEAS 4 TO 5 FT. PATCHY FOG. SHOWERS
LIKELY.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 5 FT. A CHANCE OF SHOWERS.
SAT AND SAT NIGHT
W WINDS 10 TO 15 KT, BECOMING SW 15 TO
20 KT. GUSTS UP 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.
ANZ281-130000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 AM EDT TUE MAY 12 2026
TODAY
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT THIS AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: SE
4 FT AT 8 SECONDS AND NW 2 FT AT 4 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 4 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND
W 2 FT AT 4 SECONDS.
WED
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND SE 4 FT AT 5 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN
THE AFTERNOON WITH VSBY 1 TO 3 NM.
THU NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND E
2 FT AT 5 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
EVENING WITH VSBY 1 TO 3 NM.
FRI
W WINDS AROUND 10 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 4 TO 6 FT.
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.
ANZ282-130000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 AM EDT TUE MAY 12 2026
TODAY
NW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND W
2 FT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS AND W 2 FT AT 4 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND
SE 4 FT AT 5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
SE WINDS AROUND 10 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND SW 2 FT AT
6 SECONDS. PATCHY FOG. SHOWERS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 5 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.
ANZ283-130000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 AM EDT TUE MAY 12 2026
TODAY
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW 3 FT
AT 4 SECONDS AND E 3 FT AT 8 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS AND W 2 FT AT 4 SECONDS.
WED
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
WED NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
THU
SE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS.
PATCHY FOG. SHOWERS.
THU NIGHT
S WINDS AROUND 10 KT, BECOMING W AFTER MIDNIGHT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND S 4 FT AT
6 SECONDS. SHOWERS, MAINLY IN THE EVENING. PATCHY FOG IN THE
EVENING.
FRI THROUGH SAT NIGHT
SW 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.
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