755
FZUS51 KBOX 050504
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
104 AM EDT WED AUG 5 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-051800-
104 AM EDT WED AUG 5 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE WILL BUILD AND REMAIN SITUATED OFF THE EASTERN
SEABOARD FOR THE REST OF THE WEEK AND INTO WEEKEND. THIS WILL RESULT
IN PERSISTANT SOUTHWEST WINDS ACROSS THE COASTAL WATERS.
ANZ250-051800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
WED
S WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS
AND SW 1 FOOT AT 3 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND S 1 FOOT AT 3 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
THU NIGHT AND FRI
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 6 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SAT THROUGH SUN 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.
ANZ251-051800-
MASSACHUSETTS BAY AND IPSWICH BAY-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 8 SECONDS AND SW 1 FOOT AT 2 SECONDS.
WED
SW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: SW
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 7 SECONDS, BECOMING S 1 FOOT
AT 2 SECONDS AND SE 1 FOOT AT 7 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 7 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: SW
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: S 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: SW 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 8 SECONDS. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT THROUGH SUN 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.
ANZ231-051800-
CAPE COD BAY-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
S WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 2 SECONDS AND S 1 FOOT AT 7 SECONDS.
WED
SE 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 3 SECONDS AND S 1 FOOT AT 7 SECONDS, BECOMING SW
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 7 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS
AND SE 1 FOOT AT 7 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND S
1 FOOT AT 7 SECONDS.
THU
SW WINDS 5 TO 10 KT, INCREASING TO 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: SW 1 FOOT AT 2 SECONDS AND S
1 FOOT AT 6 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND S 1 FOOT
AT 7 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND
SW 1 FOOT AT 3 SECONDS.
SAT THROUGH SUN 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 S
1 FOOT 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.
ANZ254-051800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
WED
SE WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND SW 1 FOOT AT
4 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
S 3 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
THU
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: S 3 FT
AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
1 FOOT AT 9 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
1 FOOT AT 9 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.
ANZ255-051800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SE WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
WED
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
S 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NW 1 FOOT AT
4 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
1 FOOT AT 9 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND E
1 FOOT AT 9 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.
ANZ256-051800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
E WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND S 2 FT AT
4 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
S 3 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NW 2 FT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E
1 FOOT AT 9 SECONDS.
SAT THROUGH SUN 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
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.
ANZ232-051800-
NANTUCKET SOUND-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
WED
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 7 SECONDS.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 7 SECONDS. PATCHY FOG IN THE MORNING.
THU NIGHT THROUGH FRI NIGHT
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 S
1 FOOT AT 6 SECONDS.
SAT THROUGH SUN NIGHT
SW 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 SE
2 FT AT 7 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.
ANZ233-051800-
VINEYARD SOUND-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND SW 2 FT AT 7 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND S 2 FT AT
7 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND SW 2 FT AT 7 SECONDS. PATCHY FOG
AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND E 1 FOOT AT
5 SECONDS. PATCHY FOG IN THE MORNING.
THU NIGHT THROUGH FRI NIGHT
SW 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 SW
2 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE
1 FOOT AT 9 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.
ANZ234-051800-
BUZZARDS BAY-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND SW 1 FOOT AT 7 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND SW 1 FOOT AT
4 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 7 SECONDS. PATCHY FOG
AFTER MIDNIGHT.
THU
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: S 2 FT
AT 5 SECONDS. PATCHY FOG IN THE MORNING.
THU NIGHT THROUGH FRI NIGHT
SW 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 SW
2 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE
1 FOOT AT 9 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.
ANZ235-051800-
RHODE ISLAND SOUND-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 4 SECONDS AND S 3 FT AT 7 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 3 FT AT
7 SECONDS.
WED 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. PATCHY FOG AFTER
MIDNIGHT.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 2 FT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI 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 SW
2 FT AT 3 SECONDS.
SAT THROUGH SUN 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 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.
ANZ237-051800-
BLOCK ISLAND SOUND-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND S 1 FOOT AT 3 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT AT
3 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT.
THU
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 2 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI 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
1 FOOT AT 3 SECONDS.
SAT THROUGH SUN 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.
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.
ANZ230-051800-
BOSTON HARBOR-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
WED
SW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF
SHOWERS IN THE AFTERNOON.
THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A
CHANCE OF SHOWERS THROUGH THE NIGHT.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A
CHANCE OF SHOWERS.
SUN AND SUN NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT, THEN
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.
ANZ236-051800-
NARRAGANSETT BAY-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. WAVES AROUND 2 FT.
WED
NW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG
AFTER MIDNIGHT.
THU
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES AROUND 2 FT. PATCHY FOG IN
THE MORNING.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ280-051800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
WED
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT
7 SECONDS AND W 1 FOOT AT 3 SECONDS.
WED NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND SW
2 FT AT 3 SECONDS.
THU
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU NIGHT THROUGH FRI 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.
SAT THROUGH SUN 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.
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.
ANZ281-051800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
S WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS. A CHANCE
OF SHOWERS.
WED
S WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND SW 1 FOOT AT
2 SECONDS. PATCHY FOG IN THE MORNING.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND W 1 FOOT
AT 3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E
1 FOOT AT 10 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND E
1 FOOT AT 9 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.
ANZ282-051800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: S 4 FT AT 7 SECONDS AND E 1 FOOT AT 10 SECONDS. A CHANCE
OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS.
WED
SW WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT
AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
S 3 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
THU
SW WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND NW 1 FOOT AT 4 SECONDS. PATCHY FOG IN THE
MORNING.
THU NIGHT THROUGH FRI 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 NW
2 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND E
1 FOOT AT 9 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.
ANZ283-051800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
104 AM EDT WED AUG 5 2026
REST OF TONIGHT
SE WINDS AROUND 5 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: S 4 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG.
A SLIGHT CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
WED
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT
AT 7 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: S 3 FT AT 6 SECONDS AND NW 2 FT AT 3 SECONDS. PATCHY FOG
AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NW 2 FT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT THROUGH FRI 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 NW
3 FT AT 4 SECONDS.
SAT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND E
1 FOOT AT 9 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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