960
FZUS51 KBOX 221105
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
705 AM EDT SAT AUG 22 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-230000-
705 AM EDT SAT AUG 22 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
WEAK LOW PRES LINGERS SE OF THE CAPE AND NANTUCKET THROUGH TODAY
ALONG A STALLED FRONT. HIGH PRES PUSHES THIS FRONT FARTHER OFFSHORE
SOMETIME MON INTO MON NIGHT. THIS HIGH PRES SHOULD REMAIN OVER THE
WATERS THROUGH WED.
ANZ250-230000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND N 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG THIS AFTERNOON WITH
VSBY 1 NM OR LESS.
TONIGHT
N WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND N 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND SE 1 FOOT AT
5 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING. PATCHY FOG IN
THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 5 SECONDS AND SE 1 FOOT AT 12 SECONDS.
MON AND MON NIGHT
SW 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 SE 3 FT AT
7 SECONDS.
TUE THROUGH WED NIGHT
SW 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.
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.
ANZ251-230000-
MASSACHUSETTS BAY AND IPSWICH BAY-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND N 2 FT AT
3 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG THIS AFTERNOON WITH
VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND S 2 FT AT 11 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO 1 TO
3 NM AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS AND N 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 5 SECONDS AND NW 1 FOOT AT 4 SECONDS.
MON AND MON NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT
7 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
WAVE DETAIL: E 2 FT AT 11 SECONDS AND W 1 FOOT AT 2 SECONDS.
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.
ANZ231-230000-
CAPE COD BAY-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT THIS AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 3 SECONDS AND N 2 FT AT 4 SECONDS. A SLIGHT CHANCE OF
SHOWERS. PATCHY FOG THIS AFTERNOON WITH VSBY 1 NM OR LESS.
TONIGHT
N WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG. SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 NM
OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 4 SECONDS AND E 1 FOOT AT
8 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING. PATCHY FOG IN
THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: S 1 FOOT AT 2 SECONDS
AND N 1 FOOT AT 4 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 4 SECONDS.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT WITH 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.
TUE THROUGH WED NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO
20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND W
1 FOOT AT 2 SECONDS.
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.
ANZ254-230000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT
4 SECONDS AND E 2 FT AT 8 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF
SHOWERS. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS AROUND 5 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM AFTER MIDNIGHT.
SUN
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 4 SECONDS AND S 2 FT AT 4 SECONDS. SHOWERS LIKELY, MAINLY IN
THE MORNING. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON AND MON 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 W 1 FOOT AT
3 SECONDS.
TUE THROUGH WED NIGHT
SW 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 W
2 FT AT 4 SECONDS.
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.
ANZ255-230000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT THIS
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS THIS
AFTERNOON. VSBY 1 NM OR LESS THIS MORNING.
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND NW 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND NE 1 FOOT AT 4 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 4 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
W 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.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
WAVE DETAIL: SW 4 FT AT 6 SECONDS AND W 3 FT AT 5 SECONDS.
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.
ANZ256-230000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT THIS
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND S
1 FOOT AT 5 SECONDS. PATCHY FOG THIS AFTERNOON. A SLIGHT CHANCE
OF SHOWERS THIS AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
VSBY 1 TO 3 NM IN THE EVENING.
SUN
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 4 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG IN THE
MORNING. SHOWERS LIKELY IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS AND W 2 FT AT 3 SECONDS.
MON AND MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W 2 FT AT
3 SECONDS.
TUE AND TUE NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SE
2 FT AT 11 SECONDS.
WED AND WED 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.
ANZ232-230000-
NANTUCKET SOUND-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT
4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A SLIGHT CHANCE
OF SHOWERS. VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG. SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO
3 NM.
SUN
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND N 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
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.
MON AND MON NIGHT
W 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
6 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND W
2 FT AT 3 SECONDS.
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.
ANZ233-230000-
VINEYARD SOUND-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS. PATCHY FOG THIS
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THIS AFTERNOON WITH VSBY
1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING. PATCHY FOG IN
THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
MON AND MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SW 2 FT 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: SE 3 FT AT 6 SECONDS AND W 2 FT AT
3 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ234-230000-
BUZZARDS BAY-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS. A SLIGHT CHANCE OF
SHOWERS. PATCHY FOG THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL:
N 1 FOOT AT 2 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY AFTER MIDNIGHT.
VSBY 1 TO 3 NM.
SUN
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND N
1 FOOT AT 4 SECONDS, BECOMING SE 2 FT AT 4 SECONDS AND NW 1 FOOT
AT 4 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING. PATCHY FOG
IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN 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 4 SECONDS AND E 1 FOOT AT 4 SECONDS.
MON AND MON 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 E 1 FOOT AT
5 SECONDS.
TUE THROUGH WED
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 W 2 FT AT
3 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ235-230000-
RHODE ISLAND SOUND-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT
4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG THIS AFTERNOON. A
SLIGHT CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
SE WINDS AROUND 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS LIKELY IN THE
MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS.
MON AND MON NIGHT
W 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 SW 1 FOOT
AT 3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND W
2 FT AT 4 SECONDS.
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.
ANZ237-230000-
BLOCK ISLAND SOUND-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG THIS
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THIS AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
SE WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 2 FT AT
4 SECONDS. PATCHY FOG IN THE MORNING. SHOWERS LIKELY IN THE
MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 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.
MON AND MON 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 E 3 FT AT
10 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND S
2 FT AT 6 SECONDS.
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.
ANZ230-230000-
BOSTON HARBOR-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS AROUND 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS. PATCHY FOG THIS AFTERNOON WITH VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG.
A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 TO 3 NM.
SUN
E WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS. PATCHY FOG. A CHANCE OF SHOWERS.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
MON AND MON NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE THROUGH WED NIGHT
SW 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.
ANZ236-230000-
NARRAGANSETT BAY-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG THIS
AFTERNOON. A SLIGHT CHANCE OF SHOWERS THIS AFTERNOON WITH VSBY
1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG.
SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
E WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. PATCHY FOG IN
THE MORNING. SHOWERS LIKELY IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON AND MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ280-230000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG THIS AFTERNOON WITH VSBY 1 NM OR
LESS.
TONIGHT
E WINDS 10 TO 15 KT, BECOMING S 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND N
1 FOOT AT 2 SECONDS. PATCHY FOG. SHOWERS LIKELY AFTER MIDNIGHT.
VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
SUN
SE 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: S 2 FT AT
4 SECONDS AND NE 2 FT AT 5 SECONDS. SHOWERS LIKELY, MAINLY IN THE
MORNING. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SW 1 FOOT AT
3 SECONDS.
MON AND MON NIGHT
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 W 2 FT AT
3 SECONDS.
TUE THROUGH WED NIGHT
SW 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 S
2 FT AT 6 SECONDS.
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.
ANZ281-230000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
705 AM EDT SAT AUG 22 2026
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT THIS AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT
AT 4 SECONDS AND S 2 FT AT 6 SECONDS. PATCHY FOG. A SLIGHT CHANCE
OF SHOWERS. VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 2 FT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING, THEN
SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM AFTER MIDNIGHT.
SUN
S WINDS 10 TO 15 KT WITH 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. PATCHY FOG IN THE MORNING. SHOWERS LIKELY IN THE
MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND NW 1 FOOT AT
3 SECONDS.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
2 FT AT 6 SECONDS.
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.
ANZ282-230000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
705 AM EDT SAT AUG 22 2026
TODAY
N WINDS 5 TO 10 KT, BECOMING NW THIS AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SW 2 FT AT
5 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS THIS AFTERNOON.
VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM THIS AFTERNOON.
TONIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 8 SECONDS AND SE 2 FT AT 13 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS IN THE EVENING. SHOWERS LIKELY AFTER MIDNIGHT. VSBY
1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND SE 2 FT AT 12 SECONDS.
PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE MORNING
WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SE 4 FT AT 7 SECONDS AND W 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
MON AND MON NIGHT
W WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 4 FT AT 7 SECONDS AND NW 2 FT AT 5 SECONDS.
TUE 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 6 SECONDS AND W
3 FT AT 5 SECONDS.
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.
ANZ283-230000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
705 AM EDT SAT AUG 22 2026
TODAY
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT THIS
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND
SE 2 FT AT 8 SECONDS. PATCHY FOG THIS AFTERNOON. A SLIGHT CHANCE
OF SHOWERS THIS AFTERNOON.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND
SE 2 FT AT 8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE
EVENING. SHOWERS LIKELY AFTER MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 5 SECONDS AND NE 2 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING.
SHOWERS LIKELY IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W
2 FT AT 4 SECONDS.
MON AND MON NIGHT
W 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 E 3 FT AT
11 SECONDS.
TUE THROUGH WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SE
2 FT AT 6 SECONDS.
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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