919
FZUS51 KBOX 231105
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 AM EDT SUN AUG 23 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-240000-
704 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 PUSHES THIS FRONT FARTHER
OFFSHORE SOMETIME MON INTO MON NIGHT. THIS HIGH PRES SHOULD REMAIN
OVER THE WATERS THROUGH WED.
ANZ250-240000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 5 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS THIS MORNING. A SLIGHT CHANCE OF SHOWERS THIS AFTERNOON.
VSBY 1 NM OR LESS.
TONIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND E 2 FT AT 8 SECONDS. PATCHY 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.
ANZ251-240000-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 5 SECONDS AND SE 1 FOOT AT 5 SECONDS. PATCHY FOG. A
SLIGHT CHANCE OF SHOWERS. VSBY 1 NM OR LESS, INCREASING TO 1 TO
3 NM THIS AFTERNOON.
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG. VSBY
1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. 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: SE 2 FT AT 3 SECONDS AND E 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.
ANZ231-240000-
CAPE COD BAY-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS 5 TO 10 KT, BECOMING S THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS THIS MORNING. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM THIS AFTERNOON.
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. PATCHY FOG. VSBY
1 TO 3 NM IN THE EVENING.
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: 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.
ANZ254-240000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING S
THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS
AND NE 2 FT AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS, MAINLY
THIS MORNING. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM THIS
AFTERNOON.
TONIGHT
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG. VSBY
1 TO 3 NM IN THE EVENING.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
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. GUSTS UP TO 20 KT IN THE
EVENING. 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 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.
ANZ255-240000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND S 2 FT AT
5 SECONDS. PATCHY FOG THIS MORNING. A CHANCE OF SHOWERS THIS
MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
4 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM IN THE EVENING.
MON
SW WINDS 5 TO 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.
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.
ANZ256-240000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND NE 1 FOOT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS. PATCHY FOG THIS MORNING
WITH VSBY 1 TO 3 NM.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E
4 FT AT 7 SECONDS AND SE 2 FT AT 12 SECONDS. PATCHY FOG AFTER
MIDNIGHT.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. 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. 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.
ANZ232-240000-
NANTUCKET SOUND-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT THIS
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS
AND SE 1 FOOT AT 5 SECONDS. PATCHY FOG THIS MORNING. SHOWERS
LIKELY THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS. PATCHY FOG.
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
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.
ANZ233-240000-
VINEYARD SOUND-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT, BECOMING SW THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS, MAINLY THIS MORNING. PATCHY FOG
THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SW 1 FOOT AT 2 SECONDS. PATCHY FOG.
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: 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.
ANZ234-240000-
BUZZARDS BAY-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS AROUND 5 KT, BECOMING S THIS AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT THIS AFTERNOON. WAVE DETAIL: NE
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 4 SECONDS, BECOMING NW 1 FOOT
AT 4 SECONDS AND S 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS,
MAINLY THIS MORNING. PATCHY FOG THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS. PATCHY FOG AFTER
MIDNIGHT.
MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 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. GUSTS UP TO 20 KT IN THE
EVENING. 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.
ANZ235-240000-
RHODE ISLAND SOUND-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS 5 TO 10 KT, BECOMING S THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND NE 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS, MAINLY THIS MORNING. PATCHY FOG
THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SE 2 FT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT.
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. GUSTS UP TO 20 KT IN THE
EVENING. 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.
ANZ237-240000-
BLOCK ISLAND SOUND-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS 5 TO 10 KT, BECOMING S THIS AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 4 SECONDS AND NE 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG THIS MORNING WITH VSBY
1 TO 3 NM.
TONIGHT
SW WINDS 5 TO 10 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. GUSTS UP TO 20 KT IN THE
EVENING. 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.
ANZ230-240000-
BOSTON HARBOR-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG. A
SLIGHT CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG.
VSBY 1 TO 3 NM IN THE EVENING.
MON
SW WINDS 5 TO 10 KT, INCREASING TO 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.
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.
ANZ236-240000-
NARRAGANSETT BAY-
704 AM EDT SUN AUG 23 2026
TODAY
E WINDS AROUND 5 KT, BECOMING S THIS AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT THIS AFTERNOON. A CHANCE OF
SHOWERS. PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
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 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. 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.
ANZ280-240000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS, MAINLY THIS MORNING. VSBY 1 NM OR LESS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE DETAIL: SE
3 FT AT 9 SECONDS AND S 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 NM
OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
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.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT AT
3 SECONDS.
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 E 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.
ANZ281-240000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 AM EDT SUN AUG 23 2026
TODAY
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS
UP TO 20 KT THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND NE 2 FT AT 5 SECONDS. PATCHY FOG. SHOWERS LIKELY
WITH ISOLATED TSTMS THIS MORNING, THEN A SLIGHT CHANCE OF SHOWERS
THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM 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 4 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS
IN THE AFTERNOON.
MON NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND W 2 FT AT
4 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 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.
ANZ282-240000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 AM EDT SUN AUG 23 2026
TODAY
S WINDS 10 TO 15 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND
E 2 FT AT 7 SECONDS. PATCHY FOG THIS MORNING. SHOWERS LIKELY WITH
ISOLATED TSTMS THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND SE
3 FT AT 8 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM IN THE EVENING.
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.
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.
ANZ283-240000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 AM EDT SUN AUG 23 2026
TODAY
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS
UP TO 20 KT THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 6 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG THIS MORNING.
A CHANCE OF SHOWERS THIS MORNING WITH 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 E 3 FT AT 9 SECONDS.
PATCHY FOG AFTER MIDNIGHT.
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 10 TO 15 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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