224
FZUS51 KBOX 310204
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1004 PM EDT THU JUL 30 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-311500-
1004 PM EDT THU JUL 30 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
ROUGH SEAS CONTINUE THROUGH FRI AS LOW PRES APPROACHES FROM THE W
AND BRINGS PERIODIC CHANCES FOR SHOWERS AND PERHAPS THUNDERSTORMS.
WINDS TURN NW TONIGHT. ROUGH SEAS SHOULD START TO DIMINISH HEADING
INTO THE WEEKEND.
ANZ250-311500-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS
AND SE 2 FT AT 9 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: NE 3 FT AT 6 SECONDS AND SE 3 FT AT
10 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
SAT
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 2 SECONDS AND SE 2 FT AT
9 SECONDS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE
1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS AROUND 10 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE AND TUE 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.
ANZ251-311500-
MASSACHUSETTS BAY AND IPSWICH BAY-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
FRI
NW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND W 2 FT AT
5 SECONDS.
FRI NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 6 SECONDS AND SW 1 FOOT AT
3 SECONDS.
SAT
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 2 SECONDS AND E 1 FOOT AT
6 SECONDS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND
SE 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS AROUND 10 KT WITH GUSTS UP TO
20 KT, BECOMING W. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
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.
ANZ231-311500-
CAPE COD BAY-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 2 FT AT 6 SECONDS AND SE 1 FOOT AT
10 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND N 1 FOOT AT 5 SECONDS.
SAT
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL:
SW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 5 SECONDS, BECOMING SW
1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND S 1 FOOT
AT 2 SECONDS.
SUN NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 6 SECONDS AND S 1 FOOT AT 2 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS AROUND 10 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
W WINDS 5 TO 10 KT, BECOMING S. SEAS 1 FOOT
OR LESS.
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.
ANZ254-311500-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND SE 4 FT AT
8 SECONDS.
FRI
NW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS AND SE 3 FT AT 9 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 9 SECONDS AND SW 2 FT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT
4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
SW 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
W WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 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.
ANZ255-311500-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND N 2 FT AT 5 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND NW 2 FT AT
3 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND E 2 FT AT 6 SECONDS. PATCHY FOG. VSBY 1 NM
OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 2 FT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE
3 FT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
TUE NIGHT
S WINDS 5 TO 10 KT. SEAS 2 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.
ANZ256-311500-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
N WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT. SEAS
3 TO 5 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND N 2 FT AT
4 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND NW 1 FOOT AT
4 SECONDS.
FRI NIGHT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 7 SECONDS AND SW 2 FT AT 3 SECONDS. PATCHY FOG. VSBY
1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 2 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS AROUND 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND
SE 3 FT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE
S WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
S 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.
ANZ232-311500-
NANTUCKET SOUND-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND NE 2 FT AT
4 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND NE 2 FT AT
6 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS. PATCHY FOG.
VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
SAT
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: SW
2 FT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND NE 1 FOOT AT 6 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND
SE 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE
W WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE NIGHT
S 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.
ANZ233-311500-
VINEYARD SOUND-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
N 2 FT AT 4 SECONDS AND SW 2 FT AT 8 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 9 SECONDS AND NE 1 FOOT AT
4 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS. PATCHY FOG. VSBY
1 TO 3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
SAT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS
AND SW 2 FT AT 9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY
1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND SW 2 FT AT 8 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND
SE 1 FOOT AT 12 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE NIGHT
S 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.
ANZ234-311500-
BUZZARDS BAY-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 4 SECONDS.
FRI
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 4 SECONDS AND W 1 FOOT AT
4 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 4 SECONDS AND E 1 FOOT AT 6 SECONDS. PATCHY FOG.
VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
SAT
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: SW
2 FT AT 4 SECONDS AND SW 1 FOOT AT 8 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT
AT 7 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND S
1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE 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.
ANZ235-311500-
RHODE ISLAND SOUND-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND N 2 FT AT 4 SECONDS.
FRI
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 9 SECONDS AND NW 1 FOOT AT
4 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
SAT
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 9 SECONDS AND
SW 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND S
3 FT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 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.
ANZ237-311500-
BLOCK ISLAND SOUND-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS AROUND 5 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND NE 1 FOOT AT 5 SECONDS.
FRI
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 9 SECONDS AND W 1 FOOT AT
3 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 1 FOOT AT 2 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN NIGHT
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SE WINDS 5 TO 10 KT, BECOMING S. SEAS 2 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.
ANZ230-311500-
BOSTON HARBOR-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
FRI
NW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
FRI NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SAT
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SUN NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT.
WAVES AROUND 2 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
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.
ANZ236-311500-
NARRAGANSETT BAY-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS AROUND 5 KT. WAVES 2 TO 3 FT.
FRI
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. WAVES
AROUND 2 FT.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT
SW WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. WAVES AROUND 2 FT. PATCHY FOG IN THE MORNING WITH VSBY
1 TO 3 NM.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SUN NIGHT
S WINDS AROUND 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
W WINDS 5 TO 10 KT, BECOMING S. 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.
ANZ280-311500-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 5 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND S 4 FT AT
8 SECONDS. A SLIGHT CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS 4 TO
5 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND NW 3 FT AT 4 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SAT NIGHT AND SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 9 SECONDS AND S 2 FT AT
4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND S 2 FT AT
7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 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.
ANZ281-311500-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND N 3 FT AT
6 SECONDS. PATCHY FOG.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: N 4 FT
AT 6 SECONDS AND S 4 FT AT 9 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
S 4 FT AT 9 SECONDS AND N 3 FT AT 6 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 9 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND SW
2 FT AT 4 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 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.
ANZ282-311500-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS AROUND
5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND N 3 FT AT 5 SECONDS.
FRI
NW WINDS 10 TO 15 KT, BECOMING W 5 TO 10 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND N
3 FT AT 6 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
S 4 FT AT 8 SECONDS AND N 2 FT AT 5 SECONDS. PATCHY FOG. VSBY
1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 9 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: W 3 FT AT 4 SECONDS AND S 3 FT AT 8 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SE 3 FT AT 7 SECONDS. A CHANCE OF SHOWERS. A CHANCE OF TSTMS
AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS AND
TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE 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.
ANZ283-311500-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1004 PM EDT THU JUL 30 2026
OVERNIGHT
NW WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND N 2 FT AT 5 SECONDS.
FRI
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT
9 SECONDS AND N 3 FT AT 5 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS
IN THE AFTERNOON.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY FOG. VSBY 1 NM
OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE
3 FT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
SW WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. A CHANCE OF SHOWERS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS AND TSTMS.
TUE
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
S 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.
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