278
FZUS51 KBOX 221405
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1005 AM EDT SAT AUG 22 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-230300-
1005 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.
ANZ250-230300-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND S 1 FOOT
AT 5 SECONDS. A CHANCE OF SHOWERS. PATCHY DRIZZLE. PATCHY FOG
WITH VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND N 1 FOOT AT
3 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
SUN
SE 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
CHANCE OF SHOWERS. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM IN
THE AFTERNOON.
SUN NIGHT
S WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE
1 FOOT AT 12 SECONDS. PATCHY FOG AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS AROUND 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.
ANZ251-230300-
MASSACHUSETTS BAY AND IPSWICH BAY-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND S 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS. PATCHY DRIZZLE. PATCHY FOG 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. VSBY 1 NM
OR LESS.
SUN
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 5 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM IN THE
AFTERNOON.
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. PATCHY FOG AFTER
MIDNIGHT.
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.
ANZ231-230300-
CAPE COD BAY-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS WITH PATCHY DRIZZLE
THIS MORNING. VSBY 1 TO 3 NM.
TONIGHT
N WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS.
SUN
E 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. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN
THE MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM
OR LESS IN THE MORNING.
SUN NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND
N 1 FOOT AT 4 SECONDS. PATCHY FOG AFTER MIDNIGHT.
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.
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.
ANZ254-230300-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING N 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT
4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY FOG. PATCHY DRIZZLE,
THEN A SLIGHT CHANCE OF SHOWERS WITH PATCHY DRIZZLE. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS.
TONIGHT
SW WINDS AROUND 5 KT, BECOMING S 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 AFTER MIDNIGHT. VSBY
1 NM OR LESS.
SUN
SE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND NE
2 FT AT 4 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF
TSTMS IN THE MORNING WITH VSBY 1 NM OR LESS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND W
1 FOOT AT 3 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM AFTER MIDNIGHT.
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.
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.
ANZ255-230300-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. A SLIGHT
CHANCE OF SHOWERS. PATCHY DRIZZLE. PATCHY FOG.
TONIGHT
E WINDS 5 TO 10 KT. 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 AFTER MIDNIGHT. VSBY 1 NM OR LESS.
SUN
SE WINDS AROUND 10 KT, BECOMING S WITH GUSTS UP TO 20 KT
IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
4 SECONDS AND NE 1 FOOT AT 4 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE MORNING WITH VSBY 1 NM OR LESS.
SUN NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W
1 FOOT AT 4 SECONDS. PATCHY FOG.
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.
ANZ256-230300-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
N WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: N 3 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY
DRIZZLE. A SLIGHT CHANCE OF SHOWERS, THEN A CHANCE OF SHOWERS.
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 AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SUN
SE WINDS AROUND 10 KT, BECOMING S WITH GUSTS UP TO 20 KT
IN THE AFTERNOON. 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. A
CHANCE OF SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW 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 W 2 FT AT
3 SECONDS. PATCHY FOG AFTER MIDNIGHT.
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.
ANZ232-230300-
NANTUCKET SOUND-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
N WINDS 5 TO 10 KT. 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. PATCHY DRIZZLE. VSBY 1 TO 3 NM.
TONIGHT
N WINDS AROUND 5 KT, BECOMING SE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND E 1 FOOT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AND TSTMS 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 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
3 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG. SHOWERS LIKELY
WITH A CHANCE OF TSTMS IN THE MORNING. VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS. PATCHY
FOG.
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.
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.
ANZ233-230300-
VINEYARD SOUND-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY
DRIZZLE. A SLIGHT CHANCE OF SHOWERS.
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 AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SUN
SE WINDS AROUND 10 KT, BECOMING S WITH GUSTS UP TO 20 KT
IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT
4 SECONDS AND N 1 FOOT AT 4 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
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 2 FT AT
8 SECONDS. PATCHY FOG AFTER MIDNIGHT.
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.
ANZ234-230300-
BUZZARDS BAY-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 3 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY
DRIZZLE. A SLIGHT CHANCE OF SHOWERS. PATCHY FOG.
TONIGHT
NE WINDS AROUND 5 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 AFTER MIDNIGHT. VSBY 1 TO 3 NM.
SUN
E WINDS 5 TO 10 KT, BECOMING S 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. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING WITH
VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E
1 FOOT AT 4 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO
3 NM.
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.
ANZ235-230300-
RHODE ISLAND SOUND-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT 5 SECONDS. PATCHY
DRIZZLE. A CHANCE OF SHOWERS.
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 AFTER MIDNIGHT. VSBY 1 TO 3 NM.
SUN
E 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. A CHANCE OF SHOWERS 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. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS. PATCHY FOG 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: 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.
ANZ237-230300-
BLOCK ISLAND SOUND-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 2 FT AT 5 SECONDS AND N 1 FOOT AT 2 SECONDS. PATCHY
DRIZZLE. A CHANCE OF SHOWERS.
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 AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SUN
E WINDS AROUND 10 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND NE 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 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. PATCHY FOG AFTER MIDNIGHT.
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.
ANZ230-230300-
BOSTON HARBOR-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS AROUND 10 KT. WAVES AROUND 2 FT. A
CHANCE OF SHOWERS. PATCHY DRIZZLE. PATCHY FOG 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, DECREASING TO
1 NM OR LESS AFTER MIDNIGHT.
SUN
E WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS. PATCHY FOG.
SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE MORNING, THEN A
CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR LESS IN THE
MORNING.
SUN NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. PATCHY FOG
AFTER MIDNIGHT.
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.
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.
ANZ236-230300-
NARRAGANSETT BAY-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY
DRIZZLE. A SLIGHT CHANCE OF SHOWERS.
TONIGHT
NE WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS. PATCHY
FOG. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 TO 3 NM.
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. A
CHANCE OF SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES AROUND 2 FT. PATCHY FOG AFTER MIDNIGHT WITH VSBY
1 TO 3 NM.
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.
ANZ280-230300-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
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. PATCHY DRIZZLE WITH A SLIGHT CHANCE OF SHOWERS, THEN A
CHANCE OF SHOWERS WITH PATCHY DRIZZLE. PATCHY FOG WITH VSBY 1 NM
OR LESS.
TONIGHT
E WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING S
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS
AND N 1 FOOT AT 2 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER
MIDNIGHT. VSBY 1 NM OR LESS.
SUN
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. 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. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM IN THE
AFTERNOON.
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. PATCHY FOG. VSBY 1 TO 3 NM.
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.
ANZ281-230300-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE 3 FT
AT 4 SECONDS AND S 2 FT AT 6 SECONDS. PATCHY FOG. PATCHY DRIZZLE,
THEN PATCHY DRIZZLE WITH A SLIGHT CHANCE OF SHOWERS. VSBY 1 NM OR
LESS.
TONIGHT
S WINDS 5 TO 10 KT. 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. VSBY 1 NM OR LESS.
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. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN
THE MORNING, THEN A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM
OR LESS IN THE MORNING.
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. PATCHY FOG. VSBY 1 TO 3 NM.
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.
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.
ANZ282-230300-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
NW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND SW 2 FT AT 5 SECONDS. PATCHY FOG.
PATCHY DRIZZLE. A SLIGHT CHANCE OF SHOWERS. VSBY 1 NM OR LESS.
TONIGHT
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
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 NM OR LESS.
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. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE MORNING
WITH VSBY 1 NM OR LESS.
SUN NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W
2 FT AT 5 SECONDS. PATCHY FOG. 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.
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.
ANZ283-230300-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1005 AM EDT SAT AUG 22 2026
THIS AFTERNOON
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS. PATCHY
DRIZZLE. A SLIGHT CHANCE OF SHOWERS, THEN A CHANCE OF SHOWERS.
TONIGHT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 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 AFTER MIDNIGHT. VSBY
1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. GUSTS
UP TO 20 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. A CHANCE OF
SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS. PATCHY FOG AFTER MIDNIGHT.
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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