397
FZUS51 KBOX 231405
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1005 AM EDT SUN AUG 23 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-240300-
1005 AM 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.
ANZ250-240300-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 6 SECONDS AND N 1 FOOT AT 4 SECONDS. AREAS OF
FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS. AREAS OF FOG. VSBY 1 TO 3 NM.
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: E 3 FT AT
7 SECONDS AND S 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: SE 3 FT AT 7 SECONDS AND W
2 FT AT 3 SECONDS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE NIGHT
W WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
WED THROUGH THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-240300-
MASSACHUSETTS BAY AND IPSWICH BAY-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 5 SECONDS AND SE 1 FOOT AT 5 SECONDS. AREAS OF
FOG. A SLIGHT CHANCE OF SHOWERS, THEN A CHANCE OF SHOWERS. VSBY
1 TO 3 NM.
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS. AREAS OF FOG. VSBY 1 TO 3 NM.
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 6 SECONDS AND SW 1 FOOT AT 2 SECONDS.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 3 SECONDS AND E 2 FT AT 7 SECONDS.
TUE AND TUE NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 7 SECONDS AND W 1 FOOT AT 2 SECONDS.
WED THROUGH THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 3 SECONDS AND SE 2 FT AT
3 SECONDS.
THU NIGHT
S 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.
ANZ231-240300-
CAPE COD BAY-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 1 FOOT AT 4 SECONDS AND E 1 FOOT AT 7 SECONDS. AREAS OF
FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 2 SECONDS AND N 1 FOOT AT 5 SECONDS. AREAS OF FOG AFTER
MIDNIGHT.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 4 SECONDS.
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 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 7 SECONDS.
TUE AND TUE NIGHT
W WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND W 1 FOOT AT
2 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT
AT 13 SECONDS.
THU NIGHT
S WINDS 5 TO 10 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.
ANZ254-240300-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND NE 2 FT AT
5 SECONDS. AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 NM OR
LESS.
TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS. AREAS OF FOG. VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. AREAS OF FOG.
VSBY 1 TO 3 NM.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 9 SECONDS AND SW 2 FT AT 4 SECONDS.
THU NIGHT
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-240300-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT, BECOMING S. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND S 2 FT AT 5 SECONDS.
AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
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 W 3 FT AT 3 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS. AREAS OF
FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SW 4 FT AT
6 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 3 FT AT 4 SECONDS AND SE 2 FT AT 10 SECONDS.
THU NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-240300-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 5 SECONDS AND NE 1 FOOT AT 5 SECONDS. AREAS OF
FOG.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 7 SECONDS AND SE 2 FT AT 12 SECONDS.
MON
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 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 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE
2 FT AT 11 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND W 3 FT AT 4 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 3 FT AT 4 SECONDS AND NE 3 FT AT 6 SECONDS.
THU NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-240300-
NANTUCKET SOUND-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT, BECOMING S. SEAS AROUND
2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT
4 SECONDS. AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 TO
3 NM.
TONIGHT
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 E 1 FOOT AT
5 SECONDS. AREAS OF FOG AFTER MIDNIGHT.
MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SW 1 FOOT AT
2 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND
W 1 FOOT AT 3 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND W 2 FT AT
3 SECONDS.
WED THROUGH THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SW 2 FT AT
4 SECONDS.
THU NIGHT
S WINDS AROUND 10 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.
ANZ233-240300-
VINEYARD SOUND-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
SE WINDS AROUND 5 KT, BECOMING S. SEAS AROUND
2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
3 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
SW WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SW 1 FOOT AT
2 SECONDS.
MON
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND W 2 FT 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: SW 3 FT AT 6 SECONDS AND SW
2 FT AT 4 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SW 3 FT AT
4 SECONDS.
WED THROUGH THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND E 1 FOOT
AT 6 SECONDS.
THU NIGHT
S WINDS AROUND 10 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.
ANZ234-240300-
BUZZARDS BAY-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING S. SEAS 1 FOOT OR
LESS, THEN AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND S
1 FOOT AT 4 SECONDS, BECOMING S 1 FOOT AT 4 SECONDS AND NW 1 FOOT
AT 4 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
5 SECONDS.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND SW 2 FT AT 5 SECONDS.
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: SW 2 FT AT 5 SECONDS AND E 1 FOOT AT 7 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SW 3 FT AT
5 SECONDS.
WED THROUGH THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND SW 2 FT AT
5 SECONDS.
THU NIGHT
S WINDS 10 TO 15 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.
ANZ235-240300-
RHODE ISLAND SOUND-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING S. SEAS AROUND
2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND NE 1 FOOT AT
3 SECONDS. AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS.
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: SW 3 FT
AT 4 SECONDS AND SE 2 FT AT 9 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 2 FT AT 3 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND W 2 FT AT
4 SECONDS.
WED THROUGH THU
S 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 NE 2 FT AT
5 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-240300-
BLOCK ISLAND SOUND-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING S. SEAS AROUND
2 FT. WAVE DETAIL: S 1 FOOT AT 4 SECONDS AND NE 1 FOOT AT
4 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND W 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: SE
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 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 WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 2 FT AT 7 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: W 2 FT AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-240300-
BOSTON HARBOR-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
AREAS OF FOG. A SLIGHT CHANCE OF SHOWERS. A CHANCE OF SHOWERS.
TONIGHT
S WINDS AROUND 5 KT. WAVES AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. AREAS OF FOG.
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. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
TUE AND TUE NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED THROUGH 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.
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.
ANZ236-240300-
NARRAGANSETT BAY-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING S. WAVES 1 FOOT
OR LESS, THEN AROUND 2 FT. A SLIGHT CHANCE OF SHOWERS. AREAS OF
FOG.
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
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. 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 THROUGH 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.
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.
ANZ280-240300-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 6 SECONDS AND N 1 FOOT AT 4 SECONDS. AREAS OF
FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 NM OR LESS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND S 2 FT AT
4 SECONDS. AREAS OF FOG. VSBY 1 NM OR LESS.
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. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW
1 FOOT AT 3 SECONDS. AREAS OF FOG. VSBY 1 TO 3 NM.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 2 FT AT
7 SECONDS.
WED THROUGH THU
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 9 SECONDS AND W 2 FT AT 3 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-240300-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND NE 2 FT AT
5 SECONDS. AREAS OF FOG. A CHANCE OF SHOWERS. ISOLATED TSTMS.
VSBY 1 NM OR LESS.
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. AREAS OF FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS.
MON
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. AREAS OF FOG. VSBY
1 TO 3 NM.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND W 2 FT AT 4 SECONDS.
AREAS OF FOG IN THE MORNING.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND W 2 FT AT
5 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
THU NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
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.
ANZ282-240300-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 2 FT AT
7 SECONDS. A CHANCE OF SHOWERS. ISOLATED TSTMS. AREAS OF FOG.
VSBY 1 TO 3 NM.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE 3 FT AT 8 SECONDS.
AREAS OF FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: SE 4 FT
AT 7 SECONDS AND SE 2 FT AT 11 SECONDS.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND SE 2 FT AT 11 SECONDS. AREAS OF FOG. VSBY
1 TO 3 NM.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SW 4 FT AT
5 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: W 3 FT AT 5 SECONDS AND SE 3 FT AT 10 SECONDS.
THU NIGHT
SE WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
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.
ANZ283-240300-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1005 AM EDT SUN AUG 23 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND N 1 FOOT AT
4 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND E 3 FT AT 9 SECONDS.
MON
SW WINDS AROUND 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: S
4 FT AT 6 SECONDS AND SE 3 FT AT 10 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
S 3 FT AT 6 SECONDS AND W 2 FT AT 4 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: W 4 FT AT 5 SECONDS AND SW 4 FT AT 6 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 3 FT AT 5 SECONDS AND SE 3 FT AT 9 SECONDS.
THU NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 3 FT. A CHANCE OF
SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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