573
FZUS51 KBOX 161704
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 PM EDT SUN AUG 16 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-170600-
103 PM EDT SUN AUG 16 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES SHIFTS EAST OF THE WATERS SUN NIGHT. LOW PRES THEN
APPROACHES FROM THE WEST BRINGING GUSTY S WINDS AND BUILDING SEAS
THAT HAVE PROMPTED SMALL CRAFT ADVISORIES LATE SUN NIGHT INTO MON.
THE ASSOCIATED COLD FRONT CROSSES THE REGION LATE MON INTO MON NIGHT.
HIGH PRES RETURNS TUE THROUGH THE MIDDLE OF NEXT WEEK.
ANZ250-170600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...
THIS AFTERNOON
SE 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 NE 1 FOOT
AT 3 SECONDS.
TONIGHT
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 E 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE AFTERNOON WITH
VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 1 FOOT
AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM IN
THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 9 SECONDS AND NW 2 FT AT 4 SECONDS.
TUE NIGHT
E WINDS AROUND 5 KT, BECOMING SW AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND
SW 2 FT AT 6 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT.
THU AND THU NIGHT
NW 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.
ANZ251-170600-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...
THIS AFTERNOON
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 10 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND E 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM IN
THE EVENING.
TUE
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 5 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND NE 1 FOOT
AT 4 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
THU
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
THU NIGHT
W 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.
ANZ231-170600-
CAPE COD BAY-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 3 SECONDS.
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 NE 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SE 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE AFTERNOON WITH
VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT
AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING
WITH VSBY 1 TO 3 NM.
TUE
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 3 SECONDS AND SE 1 FOOT AT 10 SECONDS.
TUE NIGHT
NE WINDS AROUND 5 KT, BECOMING SW AROUND 5 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS
AND SE 1 FOOT AT 11 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
THU
NW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
THU NIGHT
W 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.
ANZ254-170600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND NE 1 FOOT AT
3 SECONDS.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE AFTERNOON WITH
VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NE AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT
AT 5 SECONDS AND SE 3 FT AT 10 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 TO 3 NM.
TUE
N 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 3 FT AT 6 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND SW 2 FT AT
7 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 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.
ANZ255-170600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
MONDAY NIGHT...
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 5 SECONDS AND NE 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
3 FT AT 4 SECONDS AND NE 1 FOOT AT 4 SECONDS.
MON
S WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT
AT 7 SECONDS AND E 2 FT AT 4 SECONDS. PATCHY FOG. SHOWERS LIKELY,
MAINLY IN THE MORNING. VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 10 TO 15 KT, BECOMING N AFTER MIDNIGHT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND SE 4 FT AT
8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY
1 TO 3 NM.
TUE
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT
AT 7 SECONDS AND S 4 FT AT 8 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND SE 3 FT AT
8 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
SW WINDS AROUND 10 KT, BECOMING NW. SEAS
2 TO 3 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.
ANZ256-170600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
MONDAY NIGHT...
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT 2 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT, BUILDING TO 3 TO 5 FT AFTER MIDNIGHT.
WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS,
BECOMING S 4 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SE 5 FT AT 5 SECONDS AND SE 4 FT AT
10 SECONDS. PATCHY FOG. SHOWERS LIKELY IN THE MORNING. A CHANCE
OF SHOWERS IN THE AFTERNOON. VSBY 1 TO 3 NM.
MON NIGHT
E WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 15 SECONDS AND
S 4 FT AT 6 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 TO
3 NM.
TUE
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 7 SECONDS AND
N 1 FOOT AT 3 SECONDS.
TUE NIGHT
SW WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND NE 1 FOOT AT 3 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 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.
ANZ232-170600-
NANTUCKET SOUND-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 3 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY IN THE AFTERNOON. PATCHY FOG IN THE AFTERNOON WITH VSBY
1 TO 3 NM.
MON NIGHT
SE WINDS 10 TO 15 KT, BECOMING N AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM IN
THE EVENING.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND W 2 FT AT 7 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 4 SECONDS AND SW 1 FOOT AT
6 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
THU AND THU NIGHT
W 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.
ANZ233-170600-
VINEYARD SOUND-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
MONDAY NIGHT...
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS. PATCHY FOG. SHOWERS LIKELY, MAINLY IN THE MORNING.
VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 7 SECONDS AND SE 3 FT AT
12 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM IN THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 7 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE NIGHT
S WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 2 FT
AT 9 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
THU AND THU NIGHT
W 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.
ANZ234-170600-
BUZZARDS BAY-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
MONDAY NIGHT...
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND SW 2 FT AT
7 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM IN THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 7 SECONDS AND SW 2 FT AT 7 SECONDS.
TUE NIGHT
S WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND NE 1 FOOT
AT 2 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
THU AND THU NIGHT
W 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.
ANZ235-170600-
RHODE ISLAND SOUND-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
MONDAY NIGHT...
THIS AFTERNOON
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 3 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 15 TO 20 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS AND
SE 4 FT AT 10 SECONDS. PATCHY FOG. SHOWERS LIKELY IN THE MORNING.
A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 TO 3 NM.
MON NIGHT
E WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 13 SECONDS AND SE 4 FT AT
6 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM IN THE EVENING.
TUE
N WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT
7 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND NE 1 FOOT AT 3 SECONDS.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
THU AND THU NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 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.
ANZ237-170600-
BLOCK ISLAND SOUND-
103 PM EDT SUN AUG 16 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
MONDAY NIGHT...
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND SE 4 FT AT 8 SECONDS.
PATCHY FOG. SHOWERS LIKELY IN THE MORNING. A CHANCE OF SHOWERS IN
THE AFTERNOON. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 4 FT AT
13 SECONDS. PATCHY FOG IN THE EVENING.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND E 1 FOOT AT 4 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 7 SECONDS AND NE 1 FOOT AT 6 SECONDS.
THU
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
THU NIGHT
NW 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.
ANZ230-170600-
BOSTON HARBOR-
103 PM EDT SUN AUG 16 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES AROUND 2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM.
MON NIGHT
E WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
1 FOOT OR LESS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING
WITH VSBY 1 TO 3 NM.
TUE
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
TUE NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU AND THU NIGHT
N WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ236-170600-
NARRAGANSETT BAY-
103 PM EDT SUN AUG 16 2026
THIS AFTERNOON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
WAVES 2 TO 3 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
4 FT. PATCHY FOG. SHOWERS LIKELY IN THE MORNING. A CHANCE OF
SHOWERS IN THE AFTERNOON. VSBY 1 TO 3 NM.
MON NIGHT
NE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT.
WAVES 2 TO 3 FT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
TUE
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. WAVES
AROUND 2 FT.
TUE NIGHT
SW WINDS AROUND 5 KT. WAVES AROUND 2 FT.
WED AND WED NIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO
10 KT. WAVES AROUND 2 FT.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. WAVES 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.
ANZ280-170600-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 PM EDT SUN AUG 16 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE AFTERNOON WITH
VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 10 TO 15 KT, BECOMING NE AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 4 TO 5 FT. WAVE DETAIL: SE 3 FT AT
5 SECONDS AND SE 2 FT AT 10 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 TO 3 NM IN THE EVENING.
TUE
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS AND SE 4 FT AT
8 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 8 SECONDS AND SW 3 FT AT
7 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 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.
ANZ281-170600-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 PM EDT SUN AUG 16 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT, BUILDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: S 3 FT
AT 4 SECONDS AND NE 1 FOOT AT 3 SECONDS, BECOMING SE 4 FT AT
5 SECONDS AND SE 1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
MON NIGHT
SE WINDS 10 TO 15 KT, BECOMING NE AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S 5 FT AT
8 SECONDS AND SE 2 FT AT 5 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 TO 3 NM.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND W 5 FT AT 7 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: W
4 FT AT 6 SECONDS AND S 4 FT AT 7 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
2 TO 3 FT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS 2 TO
3 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.
ANZ282-170600-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 PM EDT SUN AUG 16 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND NE 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND N
1 FOOT AT 4 SECONDS.
MON
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE
5 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. SHOWERS LIKELY.
PATCHY FOG IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. SEAS 5 TO 6 FT. WAVE DETAIL: S 6 FT AT
7 SECONDS AND E 2 FT AT 3 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE EVENING WITH VSBY 1 TO 3 NM.
TUE
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SW 5 FT
AT 7 SECONDS AND S 5 FT AT 8 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND SE 3 FT AT
8 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW. SEAS
AROUND 3 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.
ANZ283-170600-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 PM EDT SUN AUG 16 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT 3 SECONDS.
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 3 FT, BUILDING TO 3 TO 5 FT AFTER MIDNIGHT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS, BECOMING
S 3 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
MON
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND E 2 FT AT 5 SECONDS.
PATCHY FOG. SHOWERS LIKELY. VSBY 1 TO 3 NM.
MON NIGHT
S WINDS AROUND 10 KT, BECOMING N AFTER MIDNIGHT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS. PATCHY FOG IN
THE EVENING.
TUE
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT AT 7 SECONDS AND
S 4 FT AT 7 SECONDS.
TUE NIGHT
W WINDS AROUND 5 KT. SEAS AROUND 3 FT. WAVE DETAIL:
S 3 FT AT 7 SECONDS AND NE 1 FOOT AT 4 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
THU AND THU NIGHT
SW WINDS AROUND 10 KT, BECOMING NW. SEAS
2 TO 3 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.
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