684
FZUS51 KBOX 232304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 PM EDT SUN AUG 23 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-241200-
704 PM EDT SUN AUG 23 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
WEAK LOW PRES CONTINUES MOVING N OVER THE EASTERN WATERS TODAY.
PERIODS OF SHOWERS POSSIBLE. HIGH PRES MOVES IN TONIGHT INTO MON.
THIS HIGH PRES SHOULD REMAIN OVER THE WATERS THROUGH WED. POTENTIAL
FOR LOW PRES TO RETURN LATE WEEK WITH SHOWERS POSSIBLE.
ANZ250-241200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 PM EDT SUN AUG 23 2026
TONIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND S 2 FT AT 3 SECONDS. A
SLIGHT CHANCE OF SHOWERS THIS EVENING.
MON
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND SW 2 FT AT 4 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE
2 FT AT 6 SECONDS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 6 SECONDS AND SW 1 FOOT AT 3 SECONDS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND SE 1 FOOT AT 11 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 10 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI 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.
ANZ251-241200-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 PM EDT SUN AUG 23 2026
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND E 2 FT AT
6 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS EVENING.
MON
SW 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: SE
2 FT AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS.
MON NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND
E 2 FT AT 7 SECONDS.
TUE
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 6 SECONDS AND SW 1 FOOT AT 3 SECONDS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 10 SECONDS AND W 1 FOOT AT 2 SECONDS.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-241200-
CAPE COD BAY-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT THIS EVENING.
SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND N
1 FOOT AT 5 SECONDS. AREAS OF DENSE FOG AFTER MIDNIGHT WITH VSBY
1 NM OR LESS.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS. AREAS OF DENSE FOG
IN THE MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS.
TUE
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: S 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 11 SECONDS, BECOMING W 1 FOOT AT 2 SECONDS AND S 1 FOOT
AT 3 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 6 SECONDS.
THU
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
THU NIGHT AND FRI
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A
CHANCE OF SHOWERS.
FRI 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.
ANZ254-241200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 PM EDT SUN AUG 23 2026
TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS EVENING. AREAS OF FOG
AFTER MIDNIGHT.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND W
1 FOOT AT 3 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
TUE
SW 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: W 2 FT
AT 4 SECONDS AND S 2 FT AT 6 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND
W 2 FT AT 4 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI 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.
ANZ255-241200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW 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 W 1 FOOT AT
3 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS EVENING.
MON
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS AND W 1 FOOT AT 4 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT
AT 11 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND
SE 3 FT AT 9 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
7 SECONDS AND W 1 FOOT AT 4 SECONDS.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A
CHANCE OF SHOWERS.
FRI 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.
ANZ256-241200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW 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 W 1 FOOT AT
4 SECONDS.
MON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
W 2 FT AT 4 SECONDS.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT
11 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SW
3 FT AT 5 SECONDS.
THU
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
FRI
S WINDS AROUND 10 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 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.
ANZ232-241200-
NANTUCKET SOUND-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS EVENING.
MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 1 FOOT AT
6 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE
1 FOOT AT 6 SECONDS.
TUE
W WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND
SE 2 FT AT 6 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 2 FT AT 6 SECONDS.
THU
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS.
FRI 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.
ANZ233-241200-
VINEYARD SOUND-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND S
2 FT AT 7 SECONDS.
TUE
W WINDS 10 TO 15 KT, BECOMING SW 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 1 FOOT AT 11 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW 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
1 FOOT AT 11 SECONDS.
THU
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
FRI
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
FRI 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.
ANZ234-241200-
BUZZARDS BAY-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
8 SECONDS. AREAS OF DENSE FOG AFTER MIDNIGHT WITH VSBY 1 NM OR
LESS.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND S 2 FT AT 6 SECONDS. AREAS OF DENSE FOG IN
THE MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT
SW 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: S 2 FT AT 5 SECONDS AND SE 1 FOOT AT 11 SECONDS.
TUE
W WINDS 10 TO 15 KT, BECOMING SW 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 11 SECONDS.
TUE NIGHT
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: S 3 FT AT 5 SECONDS AND SE 1 FOOT AT 11 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
FRI 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.
ANZ235-241200-
RHODE ISLAND SOUND-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
MON
SW 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 3 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND W
1 FOOT AT 4 SECONDS.
TUE
W WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND
SE 1 FOOT AT 11 SECONDS.
TUE NIGHT
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: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 11 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
THU
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
FRI
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI NIGHT
W 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.
ANZ237-241200-
BLOCK ISLAND SOUND-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON
SW 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: SE
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 2 FT AT
7 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT 10 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
THU NIGHT AND FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE
OF SHOWERS.
FRI NIGHT
W 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.
ANZ230-241200-
BOSTON HARBOR-
704 PM EDT SUN AUG 23 2026
TONIGHT
S WINDS AROUND 5 KT. WAVES AROUND 2 FT.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES AROUND 2 FT.
MON NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
TUE NIGHT
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
S WINDS 5 TO 10 KT, BECOMING SW. WAVES
1 FOOT OR LESS. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-241200-
NARRAGANSETT BAY-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
MON NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES AROUND 2 FT.
TUE
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. WAVES AROUND 2 FT.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT.
THU NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
FRI
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
FRI NIGHT
W WINDS 5 TO 10 KT. WAVES 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.
ANZ280-241200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 PM EDT SUN AUG 23 2026
TONIGHT
S 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 NW 1 FOOT AT
4 SECONDS. AREAS OF FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
MON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT
AT 3 SECONDS. AREAS OF FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 1 FOOT AT
11 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
TUE
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS AROUND 3 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND W 1 FOOT
AT 4 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS
AND S 2 FT AT 6 SECONDS.
THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT AT
3 SECONDS.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-241200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 PM EDT SUN AUG 23 2026
TONIGHT
S 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 N 1 FOOT AT
4 SECONDS. A SLIGHT CHANCE OF SHOWERS THIS EVENING. A CHANCE OF
SHOWERS AFTER MIDNIGHT. AREAS OF FOG AFTER MIDNIGHT.
MON
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS AND SE 1 FOOT AT 11 SECONDS. AREAS OF FOG IN
THE MORNING. PATCHY FOG IN THE AFTERNOON. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
MON NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND
W 1 FOOT AT 4 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND S 2 FT AT 6 SECONDS.
PATCHY FOG IN THE MORNING.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND E
3 FT AT 12 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 2 FT
AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS.
THU NIGHT AND FRI
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. A CHANCE OF SHOWERS.
FRI NIGHT
SW WINDS 5 TO 10 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.
ANZ282-241200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND N 1 FOOT AT 5 SECONDS.
A CHANCE OF SHOWERS. A SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT.
MON
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND SE 2 FT AT 11 SECONDS.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
SW 3 FT AT 6 SECONDS AND E 2 FT AT 6 SECONDS. PATCHY FOG. VSBY
1 TO 3 NM.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND S 2 FT AT
6 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND W
3 FT AT 5 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 2 FT
AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS.
THU NIGHT AND FRI
S WINDS AROUND 10 KT. SEAS AROUND 3 FT. A
CHANCE OF SHOWERS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 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.
ANZ283-241200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 PM EDT SUN AUG 23 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND NW 2 FT AT 6 SECONDS.
A SLIGHT CHANCE OF SHOWERS THIS EVENING.
MON
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
4 FT AT 6 SECONDS AND SE 2 FT AT 11 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND
SE 2 FT AT 11 SECONDS.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
TUE NIGHT AND WED
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND W 3 FT AT
5 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
SE 3 FT AT 9 SECONDS AND SW 2 FT AT 5 SECONDS.
THU
S WINDS 10 TO 15 KT. SEAS AROUND 3 FT.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
FRI
S WINDS AROUND 10 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
FRI NIGHT
SW WINDS 5 TO 10 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.
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