281
FZUS51 KBOX 302003
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
403 PM EDT SUN AUG 30 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-310900-
403 PM EDT SUN AUG 30 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A BACKDOOR COLD FRONT CROSSES THE WATERS LATE TONIGHT INTO EARLY MON
MORNING. THIS BACKDOOR FRONT WILL THEN LIFT NORTHWARD BEFORE
STALLING ACROSS THE WATERS INTO MID-WEEK. LOW PRES AND ASSOCIATED
COLD FRONT WILL CROSS THE WATERS THU INTO THU NIGHT. THIS LOW PRES
SYSTEM WILL INTENSIFY AS IT LIFTS NE TOWARDS THE CANADIAN
MARITIMES FRI AND SHIFT FURTHER EAST BY THE HOLIDAY WEEKEND. AT THE
SAME TIME...A HIGH PRES SYSTEM OVER QUEBEC WILL NOSE SOUTHWARD.
ANZ250-310900-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT
3 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS THIS
EVENING.
MON
N WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND NW 1 FOOT AT
3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 7 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 3 SECONDS AND SE 2 FT AT 8 SECONDS. SHOWERS LIKELY, MAINLY IN
THE MORNING.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS.
SHOWERS LIKELY, MAINLY IN THE EVENING.
WED
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 6 SECONDS AND S 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
S WINDS 5 TO 10 KT, BECOMING N. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N 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.
ANZ251-310900-
MASSACHUSETTS BAY AND IPSWICH BAY-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT
3 SECONDS AND E 1 FOOT AT 8 SECONDS. A SLIGHT CHANCE OF SHOWERS
THIS EVENING.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND E 1 FOOT
AT 8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 6 SECONDS, BECOMING S 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 6 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 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: SE 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 7 SECONDS, BECOMING SE 2 FT AT 4 SECONDS. SHOWERS
LIKELY.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS.
SHOWERS LIKELY, MAINLY IN THE EVENING.
WED
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. SHOWERS
LIKELY.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
N 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.
ANZ231-310900-
CAPE COD BAY-
403 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT
3 SECONDS AND E 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS THIS
EVENING. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS. A
CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 4 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING.
TUE NIGHT
SE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 3 SECONDS.
SHOWERS LIKELY, MAINLY IN THE EVENING.
WED AND WED NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
THU
S 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.
FRI AND FRI NIGHT
N 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.
ANZ254-310900-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS
AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND E 2 FT AT
7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE
SE 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: SE
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 5 SECONDS. SHOWERS LIKELY IN THE EVENING. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
WED
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 5 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
THU AND THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N 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.
ANZ255-310900-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
403 PM EDT SUN AUG 30 2026
TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS
AND SE 2 FT AT 8 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 5 SECONDS. SHOWERS LIKELY.
WED AND WED NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
SW WINDS AROUND 10 KT, BECOMING W. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS AROUND 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.
ANZ256-310900-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
403 PM EDT SUN AUG 30 2026
TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND E 2 FT AT 6 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 5 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
SE 1 FOOT AT 8 SECONDS. SHOWERS LIKELY IN THE MORNING. A CHANCE
OF SHOWERS IN THE AFTERNOON.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS. SHOWERS LIKELY.
WED AND WED NIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND S 1 FOOT AT 4 SECONDS. A CHANCE
OF SHOWERS.
THU
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
THU NIGHT
W WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 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.
ANZ232-310900-
NANTUCKET SOUND-
403 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W AFTER MIDNIGHT. GUSTS
UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS
AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 4 SECONDS AND E 1 FOOT AT
8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
TUE
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT
AT 7 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS.
SHOWERS LIKELY.
WED AND WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS. A CHANCE OF
SHOWERS.
THU AND THU NIGHT
SW WINDS AROUND 10 KT, BECOMING W. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS AROUND 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.
ANZ233-310900-
VINEYARD SOUND-
403 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS
AND SE 1 FOOT AT 7 SECONDS. SHOWERS LIKELY, MAINLY IN THE
MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 5 SECONDS. SHOWERS LIKELY.
WED
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY
AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS AROUND
2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW 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.
ANZ234-310900-
BUZZARDS BAY-
403 PM EDT SUN AUG 30 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS THIS
EVENING. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT 5 SECONDS AND E 1 FOOT
AT 8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS AFTER
MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS. SHOWERS LIKELY,
MAINLY IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 5 SECONDS.
SHOWERS LIKELY.
WED
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY
AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS AROUND
2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N 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.
ANZ235-310900-
RHODE ISLAND SOUND-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. SHOWERS LIKELY
AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
SE 1 FOOT AT 8 SECONDS. SHOWERS, MAINLY IN THE MORNING.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS. SHOWERS LIKELY.
WED
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 5 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS AROUND 10 KT, BECOMING S AFTER MIDNIGHT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS
LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS AROUND 10 KT, BECOMING W. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS AROUND 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.
ANZ237-310900-
BLOCK ISLAND SOUND-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS AROUND 15 KT, BECOMING W AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT
5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS. SHOWERS AFTER
MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND SE 1 FOOT AT
7 SECONDS. SHOWERS.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. SHOWERS LIKELY.
WED
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 5 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS LIKELY
AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW 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.
ANZ230-310900-
BOSTON HARBOR-
403 PM EDT SUN AUG 30 2026
TONIGHT
W WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. WAVES AROUND 2 FT THIS EVENING, THEN 1 FOOT OR
LESS. A SLIGHT CHANCE OF SHOWERS THIS EVENING.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. SHOWERS LIKELY AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. SHOWERS LIKELY, MAINLY IN THE MORNING.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING E 5 TO 10 KT AFTER MIDNIGHT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. SHOWERS LIKELY.
WED
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS
LIKELY.
THU
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS LIKELY.
THU NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
FRI AND FRI NIGHT
N 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.
ANZ236-310900-
NARRAGANSETT BAY-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS
THIS EVENING. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS
LIKELY AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. SHOWERS, MAINLY IN THE MORNING.
TUE NIGHT
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. SHOWERS
LIKELY.
WED
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS
IN THE AFTERNOON.
WED NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT.
WAVES AROUND 2 FT. A CHANCE OF SHOWERS IN THE EVENING. SHOWERS
LIKELY AFTER MIDNIGHT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 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.
ANZ280-310900-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT
5 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS THIS
EVENING. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
N WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS
AND SE 2 FT AT 8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS
IN THE MORNING.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND S
2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
WED
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS.
WED NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. A CHANCE OF SHOWERS.
THU AND THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING N 5 TO 10 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. SEAS 4 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.
ANZ281-310900-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
403 PM EDT SUN AUG 30 2026
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 6 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR
LESS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
WED
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS. A CHANCE OF SHOWERS.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
THU THROUGH FRI
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
FRI NIGHT
N WINDS AROUND 10 KT. SEAS 4 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.
ANZ282-310900-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
403 PM EDT SUN AUG 30 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A SLIGHT CHANCE OF SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS
AFTER MIDNIGHT.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS. PATCHY FOG IN
THE EVENING WITH VSBY 1 NM OR LESS.
TUE
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 7 SECONDS AND SW 1 FOOT AT 6 SECONDS. SHOWERS LIKELY.
WED AND WED NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 6 SECONDS. A CHANCE OF SHOWERS.
THU
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
THU NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 4 FT. A CHANCE OF
SHOWERS.
FRI
NW WINDS AROUND 10 KT. SEAS AROUND 4 FT. A CHANCE OF
SHOWERS.
FRI NIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 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.
ANZ283-310900-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
403 PM EDT SUN AUG 30 2026
TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS THIS EVENING, THEN SHOWERS LIKELY WITH
ISOLATED TSTMS AFTER MIDNIGHT.
MON
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS. A
CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS. SHOWERS LIKELY, MAINLY IN THE MORNING.
TUE NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS. SHOWERS LIKELY.
WED AND WED NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: E 4 FT AT 7 SECONDS AND S 2 FT AT 4 SECONDS. A CHANCE OF
SHOWERS.
THU
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
THU NIGHT
W WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
FRI
NW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
FRI NIGHT
NW WINDS AROUND 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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