053
FZUS51 KBOX 122304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 PM EDT SAT SEP 12 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-131200-
704 PM EDT SAT SEP 12 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE EXITS EAST OF THE WATERS TONIGHT. A WARM FRONT WILL
THEN CROSS THE WATERS ON SUN. THIS WARM FRONT WILL BE ACCOMPANIED BY
HEAVY SHOWERS AND POSSIBLY A FEW EMBEDDED THUNDERSTORMS. A COLD
FRONT QUICKLY FOLLOWS SUN NIGHT WITH HIGH PRES BUILDING ACROSS THE
WATERS MON INTO TUE. THIS HIGH WILL THEN SHIFT EAST OF THE WATERS
WED INTO THU AS OUR NEXT COLD FRONT APPROACHES FROM THE WEST.
ANZ250-131200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 3 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SUN
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE
AFTERNOON.
SUN NIGHT
NE WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY
1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND W 2 FT AT 3 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
8 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ251-131200-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS EVENING.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
S WINDS AROUND 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. SHOWERS LIKELY IN THE MORNING. SHOWERS IN THE
AFTERNOON.
SUN NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND E 2 FT AT
7 SECONDS.
TUE AND TUE NIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 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.
ANZ231-131200-
CAPE COD BAY-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 10 SECONDS.
SUN
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS
IN THE AFTERNOON.
SUN NIGHT
NE WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING.
VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND E 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TUE NIGHT
SE WINDS AROUND 5 KT, BECOMING S AROUND 5 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND
SE 1 FOOT AT 11 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 5 TO 10 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.
ANZ254-131200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS 5 TO 10 KT, BECOMING S 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
NE 1 FOOT AT 4 SECONDS.
SUN
SE 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 S 2 FT AT 4 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE AFTERNOON.
SUN NIGHT
E WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 2 FT AT
10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY
1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND NW 2 FT AT
4 SECONDS.
TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
4 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ255-131200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND
E 1 FOOT AT 3 SECONDS.
SUN
SE 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. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE
AFTERNOON.
SUN NIGHT
W WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 5 SECONDS AND S 3 FT AT 6 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS IN THE EVENING. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR
LESS AFTER MIDNIGHT.
MON
NW 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 6 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
MON NIGHT THROUGH TUE NIGHT
E WINDS 15 TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND W 2 FT AT 4 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WAVE DETAIL: E 4 FT AT 8 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.
ANZ256-131200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 6 SECONDS AND E 1 FOOT AT 3 SECONDS.
SUN
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 1 FOOT
AT 10 SECONDS. SHOWERS.
SUN NIGHT
NW WINDS AROUND 10 KT, BECOMING W AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS. PATCHY FOG.
VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
MON
NW 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 W 3 FT AT 6 SECONDS. A
CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
MON NIGHT AND TUE
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
TUE NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 5 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ232-131200-
NANTUCKET SOUND-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 3 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE
AFTERNOON.
SUN NIGHT
N WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 4 SECONDS AND S 1 FOOT
AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING.
VSBY 1 TO 3 NM.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 1 FOOT AT
6 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 5 SECONDS AND NW 1 FOOT AT 6 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ233-131200-
VINEYARD SOUND-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SUN
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS. SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND SW 2 FT AT
6 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY
1 TO 3 NM.
MON
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND SE 1 FOOT
AT 3 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 3 SECONDS AND W 1 FOOT AT 5 SECONDS.
WED THROUGH THU 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.
ANZ234-131200-
BUZZARDS BAY-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS AROUND 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SE 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 9 SECONDS, BECOMING SE 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
10 SECONDS. SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT
6 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY
1 TO 3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 2 FT AT 5 SECONDS. A
CHANCE OF SHOWERS.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 6 SECONDS.
WED THROUGH THU 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.
ANZ235-131200-
RHODE ISLAND SOUND-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 3 SECONDS AND S 2 FT AT 6 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS. SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 6 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING.
MON NIGHT
N WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND W 1 FOOT AT
3 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ237-131200-
BLOCK ISLAND SOUND-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS. SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND SE 2 FT AT 6 SECONDS.
A CHANCE OF SHOWERS.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND W 1 FOOT AT
5 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 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.
ANZ230-131200-
BOSTON HARBOR-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT THIS EVENING,
THEN 1 FOOT OR LESS.
SUN
S WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS. SHOWERS.
SUN NIGHT
NW WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS. PATCHY FOG. VSBY 1 TO 3 NM.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED THROUGH THU NIGHT
SW 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.
ANZ236-131200-
NARRAGANSETT BAY-
704 PM EDT SAT SEP 12 2026
TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT.
SUN
SE WINDS 5 TO 10 KT. WAVES AROUND 2 FT. SHOWERS.
SUN NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
AROUND 2 FT. PATCHY FOG. VSBY 1 TO 3 NM.
MON
NW WINDS 10 TO 15 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED THROUGH THU NIGHT
SW 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.
ANZ280-131200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 PM EDT SAT SEP 12 2026
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 NE 1 FOOT AT
3 SECONDS.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE
AFTERNOON.
SUN NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE EVENING. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
VSBY 1 NM OR LESS IN THE MORNING.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT AT 6 SECONDS AND SE 2 FT AT
8 SECONDS.
TUE NIGHT
SE WINDS AROUND 5 KT, BECOMING S AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. 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.
ANZ281-131200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS.
SUN
SE 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 NE 3 FT AT 4 SECONDS.
SHOWERS IN THE AFTERNOON.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
7 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY
1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 6 SECONDS AND SE 3 FT AT 8 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
MON NIGHT THROUGH TUE NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 7 SECONDS AND NW
3 FT AT 5 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 5 FT AT 8 SECONDS AND NW 1 FOOT AT 5 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ282-131200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 5 SECONDS AND SE 2 FT AT 10 SECONDS.
SUN
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE
AFTERNOON.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 6 SECONDS AND E 3 FT AT 5 SECONDS. PATCHY FOG.
A CHANCE OF SHOWERS IN THE EVENING. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS
AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 15 TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: NE 5 FT AT 6 SECONDS AND W 2 FT AT 5 SECONDS.
WED THROUGH THU
S WINDS AROUND 5 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 5 FT AT 8 SECONDS AND NW 1 FOOT AT 9 SECONDS.
THU NIGHT
SW 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.
ANZ283-131200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 PM EDT SAT SEP 12 2026
TONIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND E 2 FT AT 4 SECONDS.
SHOWERS LIKELY IN THE MORNING. SHOWERS IN THE AFTERNOON.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE
2 FT AT 9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
MON NIGHT THROUGH TUE NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS AND SE
2 FT AT 9 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WAVE DETAIL: E 4 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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