175
FZUS51 KBOX 262304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 PM EDT SUN JUL 26 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-271200-
704 PM EDT SUN JUL 26 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
CALM SEAS CONTINUE INTO MON WITH HIGH PRES OVER THE
WATERS. INCREASING RISK FOR ROUGH SEAS TOWARDS THE MIDDLE OF NEXT
WEEK AS LOW PRESSURE APPROACHES FROM THE W. THIS WILL ALSO BRING
PERIODIC CHANCES FOR SHOWERS AND PERHAPS THUNDERSTORMS TUE THROUGH
MID-WEEK. ROUGH SEAS SHOULD START TO DIMINISH HEADING INTO THE BACK
HALF OF THE WEEK.
ANZ250-271200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND S 1 FOOT AT 3 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT AT
8 SECONDS AND S 2 FT AT 3 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
6 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT WITH
VSBY 1 TO 3 NM.
WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. SHOWERS WITH A CHANCE OF TSTMS. PATCHY FOG IN THE
EVENING. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. SEAS 2 TO 4 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.
ANZ251-271200-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND S 1 FOOT AT 2 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 3 SECONDS AND E 2 FT AT 7 SECONDS. PATCHY FOG IN THE
AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM AFTER
MIDNIGHT.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 2 FT AT
5 SECONDS. SHOWERS. A CHANCE OF TSTMS. PATCHY FOG. VSBY 1 TO
3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 TO
4 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.
ANZ231-271200-
CAPE COD BAY-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON
N WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 8 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON NIGHT
S WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 5 SECONDS AND E 1 FOOT AT 11 SECONDS.
TUE
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 8 SECONDS AND S 1 FOOT
AT 2 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM AFTER MIDNIGHT.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND E 2 FT AT
3 SECONDS. SHOWERS. A CHANCE OF TSTMS THROUGH THE NIGHT. PATCHY
FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING SW. 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.
ANZ254-271200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS. PATCHY FOG THIS
EVENING WITH VSBY 1 TO 3 NM.
MON
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
MON NIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND E 2 FT AT 7 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S
2 FT AT 4 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 2 FT AT
11 SECONDS. SHOWERS LIKELY. PATCHY FOG. VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS 10 TO 15 KT, BECOMING N. GUSTS UP
TO 20 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 4 TO 6 FT.
FRI NIGHT
W 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.
ANZ255-271200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE
2 FT AT 7 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT
7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
TUE
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT
7 SECONDS AND S 2 FT AT 3 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS
AND SE 2 FT AT 8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY
1 TO 3 NM AFTER MIDNIGHT.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS AND NW 3 FT AT
7 SECONDS. SHOWERS. A CHANCE OF SHOWERS AFTER MIDNIGHT. PATCHY
FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT, BECOMING W 5 TO 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.
ANZ256-271200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON
N WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND SE 2 FT AT 8 SECONDS.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND S 2 FT AT
4 SECONDS. PATCHY FOG.
TUE NIGHT AND WED
E WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 6 FT. WAVE DETAIL: SE 5 FT AT 8 SECONDS AND SE 1 FOOT AT
10 SECONDS. SHOWERS LIKELY. PATCHY FOG IN THE EVENING WITH VSBY
1 TO 3 NM.
THU AND THU NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ232-271200-
NANTUCKET SOUND-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND
S 1 FOOT AT 7 SECONDS.
MON
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 6 SECONDS AND NW 1 FOOT AT
6 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND
E 2 FT AT 10 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS
AND SE 1 FOOT AT 8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY
1 TO 3 NM AFTER MIDNIGHT.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND S 1 FOOT AT
5 SECONDS. SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS AROUND 15 KT, BECOMING N. GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ233-271200-
VINEYARD SOUND-
704 PM EDT SUN JUL 26 2026
TONIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
1 FOOT AT 3 SECONDS AND NW 1 FOOT AT 6 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND NW 1 FOOT AT
6 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND E 2 FT AT 7 SECONDS.
TUE NIGHT THROUGH WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND S
4 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS.
PATCHY FOG IN THE EVENING. PATCHY FOG. VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 3 FT AT
3 SECONDS AND SW 3 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT, BECOMING W. 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.
ANZ234-271200-
BUZZARDS BAY-
704 PM EDT SUN JUL 26 2026
TONIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
1 FOOT AT 3 SECONDS AND NW 1 FOOT AT 7 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND NW 1 FOOT
AT 6 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 6 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 7 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND SE 2 FT AT 9 SECONDS.
TUE NIGHT THROUGH WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND S
2 FT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS.
PATCHY FOG IN THE EVENING. PATCHY FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND NW 2 FT AT 8 SECONDS.
SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. SEAS AROUND
2 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.
ANZ235-271200-
RHODE ISLAND SOUND-
704 PM EDT SUN JUL 26 2026
TONIGHT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND N 2 FT AT 5 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S 2 FT AT
3 SECONDS. PATCHY FOG IN THE AFTERNOON.
TUE NIGHT AND WED
E WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING. SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 20 TO 25 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT 7 SECONDS AND SE
1 FOOT AT 10 SECONDS. SHOWERS LIKELY. PATCHY FOG IN THE EVENING
WITH VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT, BECOMING W. 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.
ANZ237-271200-
BLOCK ISLAND SOUND-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS. PATCHY FOG. A CHANCE OF TSTMS. A CHANCE OF
SHOWERS IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT WITH VSBY
1 TO 3 NM.
WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE EVENING.
PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
THU AND THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO AROUND 10 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING SW. 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.
ANZ230-271200-
BOSTON HARBOR-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
MON
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. PATCHY FOG. A CHANCE OF SHOWERS IN
THE EVENING. SHOWERS LIKELY AFTER MIDNIGHT.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT. SHOWERS. A CHANCE OF TSTMS. PATCHY FOG. VSBY
1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW. 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.
ANZ236-271200-
NARRAGANSETT BAY-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
AROUND 2 FT.
MON
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES AROUND 2 FT. PATCHY FOG. A
CHANCE OF SHOWERS IN THE AFTERNOON.
TUE NIGHT AND WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
WAVES 2 TO 4 FT. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING,
THEN SHOWERS. A CHANCE OF TSTMS THROUGH THE DAY. VSBY 1 TO 3 NM.
WED NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT. SHOWERS LIKELY. PATCHY FOG IN THE EVENING WITH VSBY
1 TO 3 NM.
THU
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ280-271200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS.
MON NIGHT
S WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 8 SECONDS AND S 1 FOOT AT 2 SECONDS.
TUE
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT AT
8 SECONDS AND SE 2 FT AT 3 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S
2 FT AT 3 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND S 3 FT AT
8 SECONDS. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS LIKELY.
PATCHY FOG. VSBY 1 TO 3 NM.
THU
NE WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
7 FT. SHOWERS LIKELY.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 7 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 5 TO 7 FT.
FRI NIGHT
W WINDS 5 TO 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.
ANZ281-271200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 PM EDT SUN JUL 26 2026
TONIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS AND NW 1 FOOT AT 6 SECONDS. PATCHY FOG. A
SLIGHT CHANCE OF SHOWERS THIS EVENING. VSBY 1 NM OR LESS.
MON
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND E 2 FT AT 10 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S
2 FT AT 4 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 3 FT AT 9 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS LIKELY IN
THE AFTERNOON. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. SHOWERS LIKELY IN THE EVENING. A CHANCE OF SHOWERS
AFTER MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
THU
NE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 8 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 10 TO 15 KT. SEAS 5 TO 8 FT.
FRI NIGHT
W WINDS 5 TO 10 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.
ANZ282-271200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 PM EDT SUN JUL 26 2026
TONIGHT
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND NW 2 FT AT 5 SECONDS. PATCHY FOG. VSBY 1 NM
OR LESS.
MON
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
SW WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND E 2 FT AT 10 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND E
1 FOOT AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO
3 NM AFTER MIDNIGHT.
WED
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 4 FT AT 9 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS. PATCHY FOG
IN THE EVENING WITH VSBY 1 TO 3 NM.
THU
N WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT.
FRI AND FRI NIGHT
NW WINDS 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.
ANZ283-271200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 PM EDT SUN JUL 26 2026
TONIGHT
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
SE 3 FT AT 7 SECONDS AND NW 1 FOOT AT 3 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND S 2 FT AT 4 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
WED
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 4 FT AT 6 SECONDS AND SE 4 FT AT 9 SECONDS.
PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 6 FT. A CHANCE OF SHOWERS. PATCHY FOG IN THE EVENING WITH
VSBY 1 TO 3 NM.
THU
N WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
8 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT, BECOMING W. 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.
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