382
FZUS51 KBOX 182003
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
402 PM EDT FRI SEP 18 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-190900-
402 PM EDT FRI SEP 18 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE BUILDS BACK IN FROM THE NNW THIS AFTERNOON INTO
SATURDAY. THEN A DEVELOPING LOW PRESSURE SYSTEM BRINGS THE THREAT OF
WIDESPREAD RAIN, ESPECIALLY THE SOUTHERN WATERS ON SUNDAY. HIGH
PRESSURE BUILDS IN FROM THE NORTH EARLY NEXT WEEK WITH THE DISTANT
SYSTEM OFF SHORE, THIS COULD PROVIDE A PERIOD OF STRONG EASTERLY
WIND, NEAR GALE FORCE, TUESDAY INTO WEDNESDAY.
ANZ250-190900-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 6 SECONDS AND W 2 FT AT 5 SECONDS.
SAT NIGHT
SE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
NE 3 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND E 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE
AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND
S 1 FOOT AT 3 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 3 SECONDS AND NE 3 FT AT 5 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT.
WED AND WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 6 TO 9 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.
ANZ251-190900-
MASSACHUSETTS BAY AND IPSWICH BAY-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 6 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 6 SECONDS AND W 2 FT AT 6 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 3 SECONDS AND E 2 FT AT 7 SECONDS. SHOWERS LIKELY IN THE
AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT, BECOMING NE WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT
3 SECONDS AND E 2 FT AT 6 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT.
TUE AND TUE NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO
25 KT. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT.
WED AND WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
SEAS 5 TO 7 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.
ANZ231-190900-
CAPE COD BAY-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 5 SECONDS AND SE 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: SE
1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 5 SECONDS, BECOMING E 1 FOOT
AT 3 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
TUE THROUGH WED
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
SEAS 3 TO 5 FT.
WED NIGHT
E WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 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.
ANZ254-190900-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS AND W 2 FT AT 4 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE
4 FT AT 6 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 7 SECONDS AND S 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 6 SECONDS AND SW 1 FOOT AT 3 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS. A CHANCE OF SHOWERS IN
THE MORNING.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
7 FT.
TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
6 TO 9 FT.
WED AND WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 7 TO 10 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.
ANZ255-190900-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 7 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
4 FT AT 5 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 6 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 5 SECONDS. SHOWERS.
MON
NE WINDS 20 TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 5 SECONDS. A CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 20 TO 25 KT. SEAS 3 TO 5 FT. A CHANCE OF
SHOWERS AFTER MIDNIGHT.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
6 TO 9 FT.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 7 TO
10 FT.
WED NIGHT
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
7 TO 10 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.
ANZ256-190900-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 8 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
4 FT AT 5 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 6 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
SE 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.
SUN 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 5 SECONDS.
SHOWERS.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 5 FT AT 5 SECONDS AND SW 2 FT AT 5 SECONDS.
A CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 5 FT, BUILDING TO 5 TO 7 FT AFTER MIDNIGHT.
TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 6 TO
9 FT.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
7 TO 10 FT.
WED
NE WINDS AROUND 30 KT WITH GUSTS UP TO 40 KT. SEAS 9 TO
12 FT.
WED NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT. SEAS
8 TO 11 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.
ANZ232-190900-
NANTUCKET SOUND-
402 PM EDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM EDT THIS EVENING
THROUGH SATURDAY MORNING...
TONIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 4 SECONDS AND W 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 6 SECONDS AND NW 1 FOOT AT 5 SECONDS.
SUN
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 6 SECONDS. A CHANCE OF
SHOWERS IN THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 4 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND NW 2 FT AT 5 SECONDS.
SHOWERS LIKELY IN THE MORNING.
MON NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. SEAS 2 TO 4 FT.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
4 TO 6 FT.
WED AND WED NIGHT
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 5 TO 7 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.
ANZ233-190900-
VINEYARD SOUND-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 4 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NW 1 FOOT AT 5 SECONDS AND NE 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 10 SECONDS. SHOWERS LIKELY IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS
AND SE 1 FOOT AT 8 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 3 FT AT 3 SECONDS AND S 1 FOOT AT
4 SECONDS. SHOWERS LIKELY IN THE MORNING.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT.
WED AND WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 4 TO 6 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.
ANZ234-190900-
BUZZARDS BAY-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND SW 1 FOOT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 10 SECONDS. SHOWERS LIKELY IN
THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 2 SECONDS
AND SE 1 FOOT AT 7 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND S 1 FOOT AT
4 SECONDS. SHOWERS LIKELY IN THE MORNING.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT.
WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 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.
ANZ235-190900-
RHODE ISLAND SOUND-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 8 SECONDS AND
SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 6 SECONDS AND W 1 FOOT AT 5 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS AND SE 2 FT AT 10 SECONDS. A CHANCE OF SHOWERS
IN THE AFTERNOON.
SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND
SE 2 FT AT 10 SECONDS. SHOWERS.
MON
NE WINDS 20 TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 5 SECONDS AND S 2 FT AT 5 SECONDS. SHOWERS LIKELY IN THE
MORNING.
MON NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. SEAS 3 TO 5 FT.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT.
TUE NIGHT THROUGH WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP
TO 40 KT. SEAS 5 TO 8 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.
ANZ237-190900-
BLOCK ISLAND SOUND-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 6 SECONDS AND SW 1 FOOT AT
5 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 5 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 7 SECONDS AND S 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS. SHOWERS LIKELY IN THE AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT, BECOMING E WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT
4 SECONDS AND SE 2 FT AT 7 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND S 1 FOOT AT
5 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
SEAS 5 TO 8 FT.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 6 TO
9 FT.
WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS
5 TO 8 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.
ANZ230-190900-
BOSTON HARBOR-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES
AROUND 2 FT.
SAT
N WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT, BECOMING E IN
THE AFTERNOON. WAVES AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR
LESS.
SAT NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS LIKELY
IN THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT AFTER MIDNIGHT.
SHOWERS.
MON
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES AROUND
2 FT. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS, THEN 2 TO 3 FT AFTER MIDNIGHT.
TUE THROUGH WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-190900-
NARRAGANSETT BAY-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. WAVES 2 TO 3 FT.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON. SHOWERS LIKELY IN THE AFTERNOON.
SUN NIGHT
SE WINDS 5 TO 10 KT, BECOMING E 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. WAVES AROUND 2 FT. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
2 TO 3 FT.
TUE THROUGH WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO
35 KT. WAVES 2 TO 3 FT, EXCEPT 4 TO 6 FT AT THE BAY ENTRANCE.
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.
ANZ280-190900-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT, BUILDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: N 4 FT
AT 4 SECONDS AND E 3 FT AT 8 SECONDS, BECOMING N 5 FT AT
6 SECONDS AND W 4 FT AT 5 SECONDS.
SAT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: N 5 FT
AT 6 SECONDS AND W 2 FT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 5 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 6 SECONDS.
SUN
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS IN
THE AFTERNOON.
SUN NIGHT
SE WINDS AROUND 10 KT, BECOMING E AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT
AT 10 SECONDS. SHOWERS LIKELY.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND S 1 FOOT AT
3 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT.
TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT.
WED AND WED NIGHT
E WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 6 TO 9 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.
ANZ281-190900-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
402 PM EDT FRI SEP 18 2026
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT, BUILDING TO 3 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: W 2 FT
AT 5 SECONDS AND E 2 FT AT 8 SECONDS, BECOMING N 5 FT AT
6 SECONDS AND SW 2 FT AT 5 SECONDS. PATCHY FOG THIS EVENING WITH
VSBY 1 NM OR LESS.
SAT
NE WINDS AROUND 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT
AT 7 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: N 4 FT AT 7 SECONDS AND W 1 FOOT AT
4 SECONDS.
SUN
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS.
SUN NIGHT
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 7 SECONDS AND S 1 FOOT AT 3 SECONDS. SHOWERS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS AROUND 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
8 FT.
TUE NIGHT
NE WINDS 25 TO 30 KT. SEAS 7 TO 10 FT.
WED AND WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 8 TO 11 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.
ANZ282-190900-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
402 PM EDT FRI SEP 18 2026
TONIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 9 SECONDS AND SW 2 FT AT 5 SECONDS. PATCHY FOG THIS EVENING
WITH VSBY 1 TO 3 NM.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NE
4 FT AT 6 SECONDS AND W 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: N
4 FT AT 6 SECONDS.
SUN
SE WINDS AROUND 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: NE
3 FT AT 7 SECONDS AND S 2 FT AT 4 SECONDS.
SUN NIGHT
SE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 6 SECONDS AND E 3 FT AT 8 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NE 4 FT AT 6 SECONDS AND SW 1 FOOT AT
4 SECONDS. SHOWERS LIKELY IN THE MORNING. A CHANCE OF SHOWERS IN
THE AFTERNOON.
MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT. A CHANCE OF SHOWERS.
TUE NIGHT AND WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 9 TO 12 FT.
WED NIGHT
NE WINDS AROUND 30 KT WITH GUSTS UP TO 40 KT. SEAS
9 TO 12 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.
ANZ283-190900-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
402 PM EDT FRI SEP 18 2026
TONIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 8 SECONDS AND SW 2 FT AT 5 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NE
4 FT AT 6 SECONDS AND W 1 FOOT AT 5 SECONDS.
SAT NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
NE 4 FT AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
SUN
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND SE 2 FT AT
4 SECONDS.
SUN NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND
SE 3 FT AT 8 SECONDS. SHOWERS.
MON
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: NE 5 FT AT 6 SECONDS AND SW 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS.
MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
5 TO 6 FT, BUILDING TO 5 TO 8 FT AFTER MIDNIGHT. A CHANCE OF
SHOWERS.
TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 8 TO
11 FT. A CHANCE OF SHOWERS.
TUE NIGHT AND WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 45 KT.
SEAS 9 TO 12 FT, BUILDING TO 11 TO 13 FT.
WED NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 45 KT. SEAS
9 TO 13 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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