999
FZUS51 KBOX 311105
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 AM EDT SUN MAY 31 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-010000-
704 AM EDT SUN MAY 31 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
STORM-FORCE GUSTS WILL DROP OFF THIS EVENING INTO TONIGHT. HIGH PRES
BRIEFLY BUILDS SOUTH OF THE WATERS SUN BEFORE ANOTHER NORTHERN
STREAM SHORTWAVE/LOW PRES SYSTEM CROSSES THE REGION MON. LOW PRES
WILL THEN MEANDER SOUTH OF THE WATERS INTO THE MIDDLE OF NEXT WEEK.
ANZ250-010000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING SW
THIS AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS
AND N 3 FT AT 6 SECONDS. PATCHY DENSE FOG THIS MORNING. SCATTERED
SHOWERS THIS AFTERNOON. VSBY 1 NM OR LESS THIS MORNING.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS. NUMEROUS SHOWERS IN
THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NE 3 FT AT 4 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT, BECOMING W AROUND 5 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NE
2 FT AT 6 SECONDS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 10 SECONDS AND NE 2 FT AT 4 SECONDS.
TUE NIGHT
S WINDS AROUND 10 KT, BECOMING W AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND SE 1 FOOT AT
4 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ251-010000-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
TODAY
W WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT THIS
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 7 SECONDS AND
NE 2 FT AT 3 SECONDS. NUMEROUS SHOWERS THIS AFTERNOON.
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING NW WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT
8 SECONDS AND S 2 FT AT 7 SECONDS. SCATTERED SHOWERS IN THE
EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND E 3 FT AT 9 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 6 SECONDS AND E 3 FT AT
9 SECONDS.
TUE
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 5 SECONDS AND E 3 FT AT
9 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
9 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ231-010000-
CAPE COD BAY-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
TODAY
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING SW
THIS AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT AT 7 SECONDS
AND SE 1 FOOT AT 10 SECONDS. SCATTERED SHOWERS THIS AFTERNOON.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND SW 1 FOOT AT
3 SECONDS. NUMEROUS SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
9 SECONDS.
MON NIGHT
NE WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 8 SECONDS.
TUE
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 12 SECONDS AND SW 1 FOOT AT
4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 3 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ254-010000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
NW WINDS 15 TO 20 KT, BECOMING SW 5 TO 10 KT THIS
AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: NE 8 FT AT 9 SECONDS AND
N 4 FT AT 5 SECONDS. SCATTERED SHOWERS THIS AFTERNOON.
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING W
AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 9 SECONDS
AND NE 2 FT AT 6 SECONDS. SCATTERED SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND E 3 FT AT 5 SECONDS.
MON NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
4 FT AT 9 SECONDS AND NE 2 FT AT 3 SECONDS.
TUE
E WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NE 2 FT AT
5 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 10 SECONDS AND NE 1 FOOT AT 4 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
THU NIGHT
SW WINDS AROUND 10 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.
ANZ255-010000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
NW WINDS 15 TO 20 KT, BECOMING SW 5 TO 10 KT THIS
AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND
N 4 FT AT 5 SECONDS. ISOLATED SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W 3 FT AT
4 SECONDS. NUMEROUS SHOWERS, MAINLY IN THE EVENING.
MON
N WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND
NE 2 FT AT 4 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO AROUND 5 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE
DETAIL: E 4 FT AT 10 SECONDS AND NE 3 FT AT 4 SECONDS.
TUE
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: E 3 FT AT 9 SECONDS AND E 2 FT AT
5 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND SE 2 FT AT
13 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ256-010000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
NW WINDS 10 TO 15 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS
AND SE 5 FT AT 11 SECONDS. ISOLATED SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS 3 TO 5 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND SW 3 FT AT
5 SECONDS. SCATTERED SHOWERS IN THE EVENING.
MON
N WINDS 10 TO 15 KT, BECOMING NE WITH GUSTS UP TO 20 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS
AND E 3 FT AT 9 SECONDS.
MON NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NE 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT
AT 4 SECONDS AND E 3 FT AT 9 SECONDS.
TUE
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND NE 1 FOOT AT
4 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND SW 2 FT AT
4 SECONDS.
WED AND WED NIGHT
NE WINDS 5 TO 10 KT, BECOMING S. SEAS 2 TO
4 FT.
THU AND THU NIGHT
SE WINDS 10 TO 15 KT, BECOMING SW. 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.
ANZ232-010000-
NANTUCKET SOUND-
704 AM EDT SUN MAY 31 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING
TODAY
NW WINDS 10 TO 15 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 3 FT AT 5 SECONDS AND
E 3 FT AT 10 SECONDS. SCATTERED SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT
5 SECONDS. NUMEROUS SHOWERS, MAINLY IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
MON NIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND E
2 FT AT 9 SECONDS.
TUE
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND SE 2 FT AT
12 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ233-010000-
VINEYARD SOUND-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS AROUND 10 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS
AND E 2 FT AT 9 SECONDS. SCATTERED SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND E 2 FT AT
10 SECONDS. NUMEROUS SHOWERS IN THE EVENING.
MON
N WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS
AND NE 1 FOOT AT 5 SECONDS. SCATTERED SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
TUE
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 4 SECONDS AND S 1 FOOT AT 8 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ234-010000-
BUZZARDS BAY-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT THIS
AFTERNOON. GUSTS UP TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND E 2 FT AT 9 SECONDS. SCATTERED SHOWERS THIS
AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS. NUMEROUS SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: E 2 FT AT 10 SECONDS AND W 1 FOOT AT
5 SECONDS. SCATTERED SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS
AND SW 1 FOOT AT 5 SECONDS.
TUE
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL:
NE 1 FOOT AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS, BECOMING SE
1 FOOT AT 5 SECONDS AND E 1 FOOT AT 10 SECONDS.
TUE NIGHT
SW 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 SE 1 FOOT AT 4 SECONDS, BECOMING SE 1 FOOT AT 3 SECONDS AND
SW 1 FOOT AT 3 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ235-010000-
RHODE ISLAND SOUND-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SW 15 TO 20 KT THIS
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND
SE 3 FT AT 10 SECONDS. ISOLATED SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND SW 3 FT AT
4 SECONDS. NUMEROUS SHOWERS, MAINLY IN THE EVENING.
MON
N WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS
AND SW 2 FT AT 5 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO AROUND 5 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 2 FT AT 4 SECONDS AND SW 2 FT AT 5 SECONDS.
TUE
NE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND E 2 FT AT
10 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND SE 2 FT AT
10 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ237-010000-
BLOCK ISLAND SOUND-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS AROUND 10 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS
AND W 2 FT AT 3 SECONDS. ISOLATED SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 10 SECONDS AND SW 2 FT AT 4 SECONDS. SCATTERED
SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 3 SECONDS AND SW 2 FT AT 5 SECONDS. SCATTERED SHOWERS IN THE
MORNING.
MON NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NE AROUND 5 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS.
TUE
NE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND E 2 FT AT
9 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 10 SECONDS AND SE 2 FT AT
10 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ230-010000-
BOSTON HARBOR-
704 AM EDT SUN MAY 31 2026
TODAY
W WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT THIS
AFTERNOON. WAVES 1 FOOT OR LESS, EXCEPT 2 TO 4 FT AT THE OUTER
HARBOR ENTRANCE. NUMEROUS SHOWERS WITH ISOLATED TSTMS THIS
AFTERNOON.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. WAVES
1 FOOT OR LESS. SCATTERED SHOWERS IN THE EVENING.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. SCATTERED SHOWERS IN THE MORNING.
MON NIGHT
SE WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
TUE
SW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
WED THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR
LESS.
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.
ANZ236-010000-
NARRAGANSETT BAY-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS
UP TO 20 KT THIS AFTERNOON. WAVES AROUND 2 FT. SCATTERED SHOWERS
THIS AFTERNOON.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES AROUND 2 FT. NUMEROUS SHOWERS IN THE EVENING.
MON
NE WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. SCATTERED SHOWERS IN THE MORNING.
MON NIGHT
E WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
AROUND 2 FT.
TUE
NW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON.
TUE NIGHT
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT.
WAVES AROUND 2 FT.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 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.
ANZ280-010000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT THIS AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT
9 SECONDS AND N 3 FT AT 5 SECONDS. ISOLATED SHOWERS THIS
AFTERNOON.
TONIGHT
S WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT WITH GUSTS
UP TO 20 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT
AT 9 SECONDS AND SE 2 FT AT 12 SECONDS. SCATTERED SHOWERS.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND S 3 FT AT 4 SECONDS.
MON NIGHT
E WINDS AROUND 5 KT, BECOMING W AROUND 5 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NE
1 FOOT AT 4 SECONDS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 10 SECONDS AND S 2 FT AT 3 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
THU 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.
ANZ281-010000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 AM EDT SUN MAY 31 2026
TODAY
N WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT THIS
AFTERNOON. SEAS 7 TO 10 FT, SUBSIDING TO 5 TO 8 FT THIS
AFTERNOON. WAVE DETAIL: NE 9 FT AT 10 SECONDS AND N 5 FT AT
6 SECONDS, BECOMING E 8 FT AT 10 SECONDS AND N 3 FT AT 6 SECONDS.
ISOLATED SHOWERS THIS AFTERNOON.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 9 SECONDS AND NW 2 FT AT 5 SECONDS. SCATTERED SHOWERS.
MON
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 E 4 FT AT 5 SECONDS.
MON NIGHT
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT AT 9 SECONDS AND NE
2 FT AT 5 SECONDS.
TUE
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND NE 2 FT AT
5 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND S 2 FT AT
9 SECONDS.
WED THROUGH THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
THU NIGHT
S 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.
ANZ282-010000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 AM EDT SUN MAY 31 2026
TODAY
N WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT THIS
AFTERNOON. SEAS 7 TO 10 FT, SUBSIDING TO 6 TO 8 FT THIS
AFTERNOON. WAVE DETAIL: NE 10 FT AT 10 SECONDS AND N 4 FT AT
6 SECONDS, BECOMING E 8 FT AT 10 SECONDS AND SE 3 FT AT
12 SECONDS. ISOLATED SHOWERS THIS AFTERNOON.
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND N
3 FT AT 6 SECONDS. SCATTERED SHOWERS.
MON
NW WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND N 2 FT AT 3 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE
DETAIL: E 4 FT AT 9 SECONDS AND NE 3 FT AT 5 SECONDS.
TUE AND TUE NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: E 4 FT AT 10 SECONDS AND SE 2 FT AT 12 SECONDS.
WED AND WED NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 4 FT AT 5 SECONDS AND E 3 FT AT 9 SECONDS.
THU AND THU NIGHT
NE 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.
ANZ283-010000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 AM EDT SUN MAY 31 2026
TODAY
NW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT THIS
AFTERNOON. SEAS 6 TO 9 FT, SUBSIDING TO 5 TO 7 FT THIS AFTERNOON.
WAVE DETAIL: NE 8 FT AT 10 SECONDS AND E 5 FT AT 12 SECONDS,
BECOMING E 6 FT AT 10 SECONDS AND E 6 FT AT 11 SECONDS. ISOLATED
SHOWERS THIS AFTERNOON.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W 3 FT AT 5 SECONDS.
MON
NW WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND S 3 FT AT 7 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 4 FT AT 9 SECONDS AND NE 3 FT AT 5 SECONDS.
TUE
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT
9 SECONDS AND SE 4 FT AT 12 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND SE 2 FT AT
12 SECONDS.
WED AND WED NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
THU AND THU NIGHT
E WINDS AROUND 10 KT, BECOMING W. 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.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page