415
FZUS51 KBOX 030503
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 AM EDT MON AUG 3 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-031800-
103 AM EDT MON AUG 3 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
SCA CONDITIONS TO START THE WEEK AS LOW PRESSURE BRINGS HEAVY RAIN
AND GUSTY WIND THROUGH MONDAY NIGHT. 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.
ANZ250-031800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY AFTERNOON...
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM
OR LESS.
MON
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM
OR LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W AROUND 10 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT
AT 8 SECONDS AND SW 3 FT AT 4 SECONDS. PATCHY FOG IN THE EVENING.
SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE EVENING.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
WED AND WED NIGHT
SW 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 THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 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.
ANZ251-031800-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 1 FOOT
AT 8 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
VSBY 1 NM OR LESS.
MON
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS. PATCHY FOG
IN THE EVENING. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE
EVENING.
TUE
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TUE 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 8 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND
SE 1 FOOT AT 6 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 8 SECONDS.
THU THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO
20 KT. SEAS AROUND 2 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.
ANZ231-031800-
CAPE COD BAY-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH THIS AFTERNOON...
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND SE 1 FOOT
AT 5 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
VSBY 1 TO 3 NM.
MON
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND S 3 FT AT 3 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 6 SECONDS AND SW 2 FT AT 3 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
TUE
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS, BECOMING W 1 FOOT
AT 2 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE NIGHT THROUGH WED 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
7 SECONDS.
THU THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND SW
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.
ANZ254-031800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH TUESDAY AFTERNOON...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM
OR LESS.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: S 7 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: S
7 FT AT 8 SECONDS AND W 2 FT AT 5 SECONDS. PATCHY FOG. A CHANCE
OF TSTMS. SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF SHOWERS
AFTER MIDNIGHT. VSBY 1 TO 3 NM.
TUE
W WINDS AROUND 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT
AT 8 SECONDS AND W 1 FOOT AT 4 SECONDS.
TUE NIGHT THROUGH WED 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 3 SECONDS.
THU 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.
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.
ANZ255-031800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT EARLY THIS
MORNING THROUGH TUESDAY EVENING...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO
3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: S 8 FT AT 9 SECONDS AND SW 3 FT AT 3 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 8 FT. WAVE DETAIL: S
8 FT AT 9 SECONDS AND SW 3 FT AT 4 SECONDS. PATCHY FOG. A CHANCE
OF TSTMS. SHOWERS LIKELY IN THE EVENING, THEN A CHANCE OF SHOWERS
AFTER MIDNIGHT. VSBY 1 TO 3 NM.
TUE
NW WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND W 3 FT AT
4 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W 3 FT AT 4 SECONDS.
THU THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND S
4 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.
ANZ256-031800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT EARLY THIS
MORNING THROUGH TUESDAY EVENING...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
VSBY 1 TO 3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT, BUILDING TO 7 TO 8 FT IN THE AFTERNOON. WAVE DETAIL: S 8 FT
AT 8 SECONDS AND SW 4 FT AT 4 SECONDS, BECOMING S 8 FT AT
9 SECONDS AND S 4 FT AT 4 SECONDS. PATCHY FOG. SHOWERS WITH A
CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 8 FT. WAVE DETAIL: S 8 FT
AT 9 SECONDS AND SW 4 FT AT 4 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
TUE
NW WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND N 2 FT AT
3 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND NW 2 FT AT 3 SECONDS.
THU 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.
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.
ANZ232-031800-
NANTUCKET SOUND-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 3 FT AT
7 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO
3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND SW 2 FT AT
9 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN
THE EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 TO
3 NM IN THE EVENING.
TUE
W WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND S 1 FOOT AT
8 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND S 1 FOOT AT
7 SECONDS.
THU 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.
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.
ANZ233-031800-
VINEYARD SOUND-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND SW 2 FT AT
4 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO
3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 6 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO
3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT
AT 9 SECONDS AND SW 3 FT AT 6 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
TUE
NW WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 8 SECONDS AND SW 2 FT AT
4 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS.
THU 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 SE
2 FT AT 10 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.
ANZ234-031800-
BUZZARDS BAY-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING
THROUGH LATE TONIGHT...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND S 3 FT AT
7 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO
3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
PATCHY FOG. A CHANCE OF TSTMS. SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING W 10 TO 15 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 3 FT AT 4 SECONDS AND SE 3 FT AT 9 SECONDS. SHOWERS
LIKELY WITH A CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE OF
SHOWERS AFTER MIDNIGHT. PATCHY FOG IN THE EVENING.
TUE
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 8 SECONDS AND SE 2 FT AT
11 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS AND SW 1 FOOT AT
4 SECONDS.
THU THROUGH FRI NIGHT
SW 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
2 FT AT 10 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.
ANZ235-031800-
RHODE ISLAND SOUND-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT EARLY THIS
MORNING THROUGH TUESDAY AFTERNOON...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO
3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: SW 7 FT AT 6 SECONDS AND E 3 FT AT 9 SECONDS.
PATCHY FOG. A CHANCE OF TSTMS. SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT
AT 9 SECONDS AND SW 3 FT AT 5 SECONDS. SHOWERS LIKELY WITH A
CHANCE OF TSTMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
TUE
NW WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND SW 2 FT AT
4 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W 2 FT AT 4 SECONDS.
THU 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 6 SECONDS AND SE
2 FT AT 10 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.
ANZ237-031800-
BLOCK ISLAND SOUND-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT EARLY THIS
MORNING THROUGH TUESDAY AFTERNOON...
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
VSBY 1 TO 3 NM.
MON
S 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 2 FT AT 4 SECONDS.
PATCHY FOG. A CHANCE OF TSTMS. SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE
DETAIL: S 6 FT AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG
IN THE EVENING. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE
EVENING WITH VSBY 1 TO 3 NM.
TUE
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND SW 1 FOOT AT
3 SECONDS.
TUE NIGHT THROUGH 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.
THU 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 SW
1 FOOT 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.
ANZ230-031800-
BOSTON HARBOR-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT EARLY THIS
MORNING THROUGH THIS AFTERNOON...
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY
FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS. VSBY 1 NM OR LESS.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES AROUND
2 FT. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. PATCHY FOG IN THE EVENING. SHOWERS
LIKELY WITH A CHANCE OF TSTMS IN THE EVENING.
TUE
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU AND 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. A CHANCE OF
SHOWERS.
FRI NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
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.
ANZ236-031800-
NARRAGANSETT BAY-
103 AM EDT MON AUG 3 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT EARLY THIS
MORNING THROUGH THIS AFTERNOON...
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY
1 NM OR LESS.
MON
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. WAVES 3 TO
5 FT. PATCHY FOG. A CHANCE OF TSTMS. SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. WAVES 2 TO 4 FT. PATCHY FOG
IN THE EVENING. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE
EVENING.
TUE
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. WAVES
2 TO 3 FT.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND
2 FT.
THU THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES 2 TO 3 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.
ANZ280-031800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 AM EDT MON AUG 3 2026
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 1 FOOT
AT 9 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY
1 NM OR LESS.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: S 7 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
MON NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT
AT 8 SECONDS AND SW 2 FT AT 5 SECONDS. PATCHY FOG IN THE EVENING.
SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE EVENING.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND W 2 FT AT 4 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
THU THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 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.
ANZ281-031800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 AM EDT MON AUG 3 2026
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM
OR LESS.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: S 8 FT AT 8 SECONDS AND SW 2 FT AT 5 SECONDS.
PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 8 FT. WAVE DETAIL: S 8 FT AT 9 SECONDS AND W 2 FT AT
5 SECONDS. PATCHY FOG. A CHANCE OF TSTMS. SHOWERS LIKELY IN THE
EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 TO 3 NM.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT, SUBSIDING TO 4 TO 5 FT IN THE AFTERNOON. WAVE DETAIL: S
6 FT AT 8 SECONDS AND W 1 FOOT AT 4 SECONDS, BECOMING S 5 FT AT
8 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TUE NIGHT THROUGH WED NIGHT
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.
THU THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 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.
ANZ282-031800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 AM EDT MON AUG 3 2026
REST OF TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT AT 7 SECONDS AND SW 4 FT AT
4 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT, BUILDING TO 8 TO 9 FT IN THE AFTERNOON. WAVE DETAIL: S 9 FT
AT 8 SECONDS AND SW 2 FT AT 3 SECONDS, BECOMING S 9 FT AT
9 SECONDS AND SW 2 FT AT 3 SECONDS. PATCHY FOG. SHOWERS WITH A
CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
6 TO 8 FT. WAVE DETAIL: SW 8 FT AT 9 SECONDS AND W 3 FT AT
5 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
VSBY 1 TO 3 NM IN THE EVENING.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
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 THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND W 2 FT AT 3 SECONDS.
THU THROUGH FRI 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.
ANZ283-031800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 AM EDT MON AUG 3 2026
REST OF TONIGHT
S WINDS AROUND 20 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
VSBY 1 TO 3 NM.
MON
S WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT, BUILDING TO 8 TO 9 FT IN THE AFTERNOON. WAVE DETAIL: S 9 FT
AT 8 SECONDS AND SW 4 FT AT 4 SECONDS, BECOMING S 9 FT AT
9 SECONDS AND S 4 FT AT 4 SECONDS. PATCHY FOG. SHOWERS WITH A
CHANCE OF TSTMS. VSBY 1 TO 3 NM.
MON NIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 7 TO 9 FT, SUBSIDING TO
6 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: S 9 FT AT 9 SECONDS AND SW
4 FT AT 3 SECONDS, BECOMING S 7 FT AT 8 SECONDS AND W 3 FT AT
4 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS IN THE EVENING,
THEN A CHANCE OF SHOWERS AFTER MIDNIGHT. PATCHY FOG IN THE
EVENING WITH VSBY 1 TO 3 NM.
TUE
NW WINDS AROUND 10 KT, BECOMING W IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND N 2 FT AT
3 SECONDS.
TUE NIGHT THROUGH WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND NE 2 FT AT 4 SECONDS.
THU THROUGH FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND S
4 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.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page