421
FZUS51 KBOX 040205
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1005 PM EDT MON AUG 3 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-041500-
1005 PM EDT MON AUG 3 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
SCA CONDITIONS PERSIST AS LOW PRESSURE BRINGS HEAVY RAIN AND GUSTY
WINDS THROUGH THIS EVENING. SEAS BUILD TO BETWEEN 5 AND 7 FEET
ACROSS THE OUTER WATERS AND WINDS INCREASE TO BETWEEN 15 AND 20 KT.
CHANCE FOR ISOLATED GALE CONDITIONS ACROSS BUZZARDS BAY AND
NANTUCKET SOUND MONDAY AFTERNOON. A FEW WEAK DISTURBANCES ARRIVE
NEXT WEEK BUT IMPACTS TO BOATERS SHOULD BE MINIMAL.
ANZ250-041500-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON
OVERNIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND SW 3 FT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TUE
W WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING SW IN
THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS
AND SW 2 FT AT 4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 7 SECONDS AND E 2 FT AT 11 SECONDS.
WED
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.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
SE 2 FT AT 7 SECONDS.
FRI THROUGH SAT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 2 FT AT
7 SECONDS.
SAT NIGHT
SW 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.
ANZ251-041500-
MASSACHUSETTS BAY AND IPSWICH BAY-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS. A SLIGHT CHANCE OF SHOWERS.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT
7 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS.
WED
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 SE 1 FOOT AT 7 SECONDS, BECOMING S
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 7 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND
S 1 FOOT AT 3 SECONDS.
FRI AND FRI 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.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. 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.
ANZ231-041500-
CAPE COD BAY-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND NE 2 FT AT
8 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SW 1 FOOT AT 2 SECONDS AND S 1 FOOT AT 6 SECONDS.
WED
S WINDS 5 TO 10 KT. 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 S 2 FT AT 7 SECONDS AND SW 1 FOOT
AT 2 SECONDS.
WED NIGHT THROUGH THU 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
SW 1 FOOT AT 2 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SW
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.
ANZ254-041500-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON
OVERNIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 7 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND W 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF TSTMS. PATCHY
FOG. VSBY 1 TO 3 NM.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND W 1 FOOT AT
4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND W 1 FOOT AT 4 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 THROUGH THU 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
1 FOOT AT 3 SECONDS.
FRI THROUGH SAT 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 SE
1 FOOT AT 7 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.
ANZ255-041500-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
SW WINDS AROUND 20 KT, BECOMING W. GUSTS UP TO
25 KT. SEAS 5 TO 8 FT. WAVE DETAIL: SW 8 FT AT 9 SECONDS AND W
3 FT AT 5 SECONDS. SHOWERS LIKELY WITH A SLIGHT CHANCE OF TSTMS,
THEN A CHANCE OF SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
TUE
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND SW 4 FT AT
8 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
4 FT AT 7 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 7 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW 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 W
2 FT AT 4 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND SE
1 FOOT AT 7 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.
ANZ256-041500-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
OVERNIGHT
W WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT. SEAS
7 TO 8 FT, SUBSIDING TO 5 TO 7 FT. WAVE DETAIL: S 8 FT AT
9 SECONDS AND SW 3 FT AT 4 SECONDS, BECOMING S 7 FT AT 9 SECONDS
AND NW 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF TSTMS, THEN A SLIGHT CHANCE OF SHOWERS.
TUE
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND NW 2 FT AT
3 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS.
WED
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
7 SECONDS AND W 2 FT AT 8 SECONDS.
WED NIGHT THROUGH THU NIGHT
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
1 FOOT AT 10 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 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.
ANZ232-041500-
NANTUCKET SOUND-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY
OVERNIGHT
SW WINDS 15 TO 20 KT, BECOMING W. GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SW 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS. A SLIGHT CHANCE OF TSTMS. PATCHY
FOG.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
WED
S WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND S 1 FOOT AT
7 SECONDS.
WED NIGHT THROUGH THU 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
SE 2 FT AT 7 SECONDS.
FRI THROUGH SAT 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
2 FT AT 7 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.
ANZ233-041500-
VINEYARD SOUND-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY
OVERNIGHT
W WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT. SEAS
4 TO 6 FT. WAVE DETAIL: SW 6 FT AT 9 SECONDS AND W 3 FT AT
10 SECONDS. A CHANCE OF SHOWERS THIS EVENING.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 2 FT AT
8 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND SW 2 FT AT 8 SECONDS.
WED
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 7 SECONDS AND SW 2 FT AT 9 SECONDS.
WED NIGHT THROUGH THU 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
SW 2 FT AT 4 SECONDS.
FRI THROUGH SAT 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 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.
ANZ234-041500-
BUZZARDS BAY-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT TUESDAY
OVERNIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SW 3 FT AT
9 SECONDS. A CHANCE OF SHOWERS.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 8 SECONDS AND W 1 FOOT AT
4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 7 SECONDS AND SW 2 FT AT 9 SECONDS.
WED
SW WINDS AROUND 5 KT, INCREASING TO AROUND 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS AND
SW 1 FOOT AT 4 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW 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
SW 2 FT AT 7 SECONDS.
FRI THROUGH SAT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SW 2 FT AT
4 SECONDS.
SAT 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.
ANZ235-041500-
RHODE ISLAND SOUND-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON
OVERNIGHT
W WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT. SEAS
5 TO 7 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND W 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND E 2 FT AT
7 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS.
WED
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND SW 2 FT AT 8 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND SW
2 FT AT 4 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 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.
ANZ237-041500-
BLOCK ISLAND SOUND-
1005 PM EDT MON AUG 3 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON
OVERNIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT. GUSTS
UP TO 20 KT. SEAS 5 TO 7 FT. WAVE DETAIL: S 6 FT AT 9 SECONDS AND
W 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
TUE
NW WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND SW 1 FOOT AT
3 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT
AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS
AND SW 1 FOOT AT 2 SECONDS.
WED
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND SW 1 FOOT AT
4 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W
1 FOOT AT 3 SECONDS.
FRI THROUGH SAT 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.
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.
ANZ230-041500-
BOSTON HARBOR-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. WAVES AROUND
2 FT.
TUE
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT
OR LESS.
FRI
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT
OR LESS. 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.
ANZ236-041500-
NARRAGANSETT BAY-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT. WAVES
2 TO 4 FT. A SLIGHT CHANCE OF SHOWERS.
TUE
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. WAVES
2 TO 3 FT.
TUE NIGHT
SW WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT
AFTER MIDNIGHT. WAVES AROUND 2 FT.
WED
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT.
FRI THROUGH SAT 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.
ANZ280-041500-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT. WAVE DETAIL: S 7 FT AT 8 SECONDS AND SW 3 FT AT
5 SECONDS. A CHANCE OF SHOWERS THIS EVENING. PATCHY FOG. VSBY
1 TO 3 NM.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT IN THE AFTERNOON. WAVE
DETAIL: S 5 FT AT 8 SECONDS AND W 3 FT AT 5 SECONDS, BECOMING S
4 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 5 SECONDS.
WED
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND SW 2 FT AT 4 SECONDS.
WED NIGHT THROUGH THU 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 3 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 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.
ANZ281-041500-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
6 TO 8 FT. WAVE DETAIL: S 8 FT AT 9 SECONDS AND W 3 FT AT
5 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A SLIGHT CHANCE OF
TSTMS. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT, SUBSIDING TO 4 TO
5 FT IN THE AFTERNOON. WAVE DETAIL: S 6 FT AT 8 SECONDS AND NW
2 FT AT 4 SECONDS, BECOMING S 5 FT AT 8 SECONDS AND NW 1 FOOT AT
4 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
WED
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W
1 FOOT AT 3 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE
1 FOOT AT 8 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.
ANZ282-041500-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
SW WINDS AROUND 20 KT, BECOMING W. GUSTS UP TO
30 KT. SEAS 6 TO 8 FT. WAVE DETAIL: SW 8 FT AT 9 SECONDS AND W
3 FT AT 6 SECONDS. PATCHY FOG. SHOWERS LIKELY. A CHANCE OF TSTMS,
THEN A SLIGHT CHANCE OF TSTMS. VSBY 1 TO 3 NM.
TUE
NW WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
5 TO 7 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND SW 4 FT AT
7 SECONDS.
TUE NIGHT
S WINDS AROUND 5 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND W 1 FOOT AT 4 SECONDS.
WED
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 7 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND
NW 2 FT AT 4 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND SE
1 FOOT AT 8 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.
ANZ283-041500-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1005 PM EDT MON AUG 3 2026
OVERNIGHT
SW WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT. GUSTS
UP TO 25 KT. SEAS 6 TO 8 FT. WAVE DETAIL: S 8 FT AT 8 SECONDS AND
SW 3 FT AT 5 SECONDS. SHOWERS LIKELY WITH A SLIGHT CHANCE OF
TSTMS, THEN A CHANCE OF SHOWERS. PATCHY FOG.
TUE
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND W 3 FT AT
8 SECONDS.
TUE NIGHT
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.
WED
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT
7 SECONDS AND W 5 FT AT 8 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W
2 FT AT 4 SECONDS.
FRI THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SE
2 FT 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.
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