915
FZUS51 KBOX 171405
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1005 AM EDT SAT OCT 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-180300-
1005 AM EDT SAT OCT 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
GUSTY NW WINDS FOLLOW THE OVERNIGHT COLD FRONT INTO TODAY. HIGH PRES
THEN BUILDS ACROSS THE REGION BY SUN. WE WILL THEN NEED TO WATCH AN
OCEAN STORM DEVELOPING OFF THE MID-ATLANTIC FOR THE FIRST HALF OF
NEXT WEEK. THE WORST IMPACTS FROM THIS STORM MAY REMAIN SOUTH OF OUR
WATERS...BUT GUSTY NE WINDS AND ROUGH SEAS ARE STILL EXPECTED.
ANZ250-180300-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 6 SECONDS AND SE 2 FT AT
8 SECONDS.
TONIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT
AT 6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
AROUND 5 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT
AT 6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT, BUILDING TO
3 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE
1 FOOT AT 7 SECONDS, BECOMING E 4 FT AT 8 SECONDS AND NE 2 FT AT
5 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 4 TO 6 FT, BUILDING TO 6 TO 9 FT
IN THE AFTERNOON. WAVE DETAIL: E 6 FT AT 10 SECONDS AND SE 4 FT
AT 14 SECONDS, BECOMING E 9 FT AT 11 SECONDS AND E 2 FT AT
4 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 7 TO 10 FT. WAVE DETAIL: E 10 FT AT 11 SECONDS AND
NE 4 FT AT 4 SECONDS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 7 TO
10 FT.
TUE NIGHT THROUGH WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 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.
ANZ251-180300-
MASSACHUSETTS BAY AND IPSWICH BAY-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
THIS AFTERNOON
NW WINDS AROUND 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
SUN
N WINDS 10 TO 15 KT, BECOMING E AROUND 5 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND
SE 1 FOOT AT 8 SECONDS.
SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO 6 FT
IN THE AFTERNOON. WAVE DETAIL: E 4 FT AT 9 SECONDS AND E 1 FOOT
AT 4 SECONDS, BECOMING E 6 FT AT 11 SECONDS AND E 2 FT AT
3 SECONDS.
MON NIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: E
7 FT AT 11 SECONDS AND E 3 FT AT 4 SECONDS.
TUE
N 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
4 TO 6 FT.
WED
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 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.
ANZ231-180300-
CAPE COD BAY-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
THIS AFTERNOON
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS AND S 1 FOOT AT
8 SECONDS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 4 FT AT 6 SECONDS AND S 1 FOOT AT 8 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
MON
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND SE 4 FT AT
13 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E
5 FT AT 9 SECONDS AND E 5 FT AT 12 SECONDS.
TUE THROUGH WED NIGHT
NE WINDS 25 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.
ANZ254-180300-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS AND S 3 FT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: N 6 FT
AT 7 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
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: N 5 FT
AT 7 SECONDS AND E 4 FT AT 8 SECONDS.
SUN NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 7 FT. WAVE DETAIL: E 7 FT AT 9 SECONDS AND N 5 FT AT
7 SECONDS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
9 FT, BUILDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE DETAIL: E
9 FT AT 10 SECONDS AND SE 7 FT AT 15 SECONDS, BECOMING E 10 FT AT
11 SECONDS AND NE 3 FT AT 3 SECONDS.
MON NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. SEAS 8 TO 11 FT. WAVE DETAIL: E 11 FT AT
11 SECONDS AND NE 3 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 8 TO
11 FT.
TUE NIGHT
NE WINDS 25 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.
ANZ255-180300-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND SW 4 FT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT, BECOMING E 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 8 SECONDS AND E 5 FT AT 14 SECONDS.
MON
NE WINDS 20 TO 25 KT. SEAS 6 TO 9 FT, BUILDING TO 8 TO
11 FT IN THE AFTERNOON. WAVE DETAIL: E 9 FT AT 10 SECONDS AND E
9 FT AT 11 SECONDS, BECOMING E 11 FT AT 11 SECONDS AND E 10 FT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
MON NIGHT
NE WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT
AFTER MIDNIGHT. SEAS 8 TO 11 FT. WAVE DETAIL: E 11 FT AT
11 SECONDS AND NE 5 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT. SEAS 7 TO 10 FT.
TUE NIGHT
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
6 TO 9 FT.
WED AND WED NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 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.
ANZ256-180300-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND S 3 FT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
5 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
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: N 4 FT
AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT, BUILDING TO 5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: NE
5 FT AT 5 SECONDS AND SE 2 FT AT 7 SECONDS, BECOMING E 7 FT AT
6 SECONDS AND E 3 FT AT 11 SECONDS.
MON AND MON NIGHT
NE WINDS 25 TO 30 KT. SEAS 8 TO 11 FT. WAVE
DETAIL: E 11 FT AT 8 SECONDS AND E 11 FT AT 12 SECONDS.
TUE
NE WINDS 25 TO 30 KT. SEAS 8 TO 11 FT. WAVE DETAIL: E
10 FT AT 11 SECONDS AND N 6 FT AT 6 SECONDS.
TUE NIGHT AND WED
NE WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 7 TO 10 FT.
WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 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.
ANZ232-180300-
NANTUCKET SOUND-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS AROUND 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 1 FOOT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN
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: N 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS.
SUN NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND E 3 FT AT
14 SECONDS.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND NE 4 FT AT 6 SECONDS.
MON NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E
6 FT AT 11 SECONDS AND NE 5 FT AT 5 SECONDS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT.
TUE NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 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.
ANZ233-180300-
VINEYARD SOUND-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 7 SECONDS AND N 2 FT AT
4 SECONDS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 3 FT AT 3 SECONDS AND SW 1 FOOT AT
7 SECONDS.
SUN
NE WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT
7 SECONDS.
SUN NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
MON AND MON NIGHT
NE WINDS 20 TO 25 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 4 FT AT 9 SECONDS AND NE 3 FT AT 4 SECONDS.
TUE THROUGH WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO
35 KT. SEAS 3 TO 5 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND E
4 FT AT 10 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.
ANZ234-180300-
BUZZARDS BAY-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS AROUND 3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND SW 2 FT AT
7 SECONDS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND SW 1 FOOT AT
7 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 6 SECONDS.
MON AND MON NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 9 SECONDS AND NE 3 FT AT
4 SECONDS.
TUE THROUGH WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO
35 KT. SEAS 3 TO 5 FT. WAVE DETAIL: N 5 FT AT 5 SECONDS AND E
4 FT AT 10 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.
ANZ235-180300-
RHODE ISLAND SOUND-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS AROUND 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 3 FT AT
7 SECONDS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 6 SECONDS AND N
1 FOOT AT 4 SECONDS.
MON AND MON NIGHT
NE WINDS 20 TO 25 KT. SEAS 5 TO 7 FT. WAVE
DETAIL: E 7 FT AT 7 SECONDS AND SE 7 FT AT 13 SECONDS.
TUE AND TUE NIGHT
NE WINDS 20 TO 25 KT, INCREASING TO 25 TO
30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT AT 11 SECONDS AND N
5 FT AT 5 SECONDS.
WED
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT.
WED NIGHT
NE WINDS 25 TO 30 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.
ANZ237-180300-
BLOCK ISLAND SOUND-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING
THIS AFTERNOON
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 3 FT AT
7 SECONDS.
TONIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS.
SUN
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
2 FT AT 4 SECONDS AND SE 1 FOOT AT 7 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT, BUILDING TO
3 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND N
1 FOOT AT 2 SECONDS, BECOMING E 4 FT AT 6 SECONDS AND E 1 FOOT AT
10 SECONDS.
MON
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT, BUILDING TO 6 TO 9 FT IN THE
AFTERNOON. WAVE DETAIL: E 6 FT AT 7 SECONDS AND SE 3 FT AT
13 SECONDS, BECOMING SE 9 FT AT 13 SECONDS AND E 6 FT AT
9 SECONDS.
MON NIGHT
NE WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. SEAS 6 TO 9 FT. WAVE DETAIL: E 9 FT AT 11 SECONDS
AND NE 4 FT AT 5 SECONDS.
TUE THROUGH WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO
35 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.
ANZ230-180300-
BOSTON HARBOR-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
WAVES AROUND 2 FT.
TONIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 30 KT, DECREASING TO
20 KT AFTER MIDNIGHT. WAVES AROUND 2 FT.
SUN
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT 2 TO
4 FT AT THE OUTER HARBOR ENTRANCE.
MON NIGHT
NE WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT AFTER MIDNIGHT.
AT THE OUTER HARBOR ENTRANCE, WAVES 2 TO 4 FT.
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.
ANZ236-180300-
NARRAGANSETT BAY-
1005 AM EDT SAT OCT 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
THIS AFTERNOON
N WINDS AROUND 15 KT WITH GUSTS UP TO 30 KT.
WAVES AROUND 3 FT.
TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 30 KT. WAVES 2 TO
3 FT.
SUN
NE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
WAVES 2 TO 3 FT.
SUN NIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON AND MON NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT, EXCEPT 4 TO 6 FT AT THE BAY ENTRANCE.
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.
ANZ280-180300-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1005 AM EDT SAT OCT 17 2026
THIS AFTERNOON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 6 TO 7 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS AND S 3 FT AT
8 SECONDS.
TONIGHT
N WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: N 7 FT
AT 7 SECONDS AND S 2 FT AT 8 SECONDS.
SUN
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: N 4 FT
AT 6 SECONDS AND S 1 FOOT AT 8 SECONDS.
SUN NIGHT
E WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE
5 FT AT 7 SECONDS AND NW 1 FOOT AT 3 SECONDS.
MON
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT, BUILDING TO 7 TO
10 FT IN THE AFTERNOON. WAVE DETAIL: E 7 FT AT 9 SECONDS AND SE
7 FT AT 13 SECONDS, BECOMING SE 10 FT AT 11 SECONDS AND E 9 FT AT
10 SECONDS.
MON NIGHT
NE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 8 TO 11 FT, BUILDING TO
10 TO 11 FT AFTER MIDNIGHT. WAVE DETAIL: E 11 FT AT 11 SECONDS
AND NE 1 FOOT AT 2 SECONDS, BECOMING E 11 FT AT 11 SECONDS AND NE
5 FT AT 5 SECONDS.
TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 7 TO
10 FT.
TUE NIGHT THROUGH 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.
ANZ281-180300-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1005 AM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY
MORNING...
THIS AFTERNOON
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 6 TO 7 FT. WAVE DETAIL: N 6 FT AT 7 SECONDS AND S 4 FT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
8 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS AND SE 4 FT AT 9 SECONDS.
SUN
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS AND E 7 FT AT 8 SECONDS.
SUN NIGHT
NE WINDS 10 TO 15 KT, BECOMING E 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 6 TO 9 FT, BUILDING TO 8 TO
11 FT AFTER MIDNIGHT. WAVE DETAIL: NE 9 FT AT 7 SECONDS AND S
1 FOOT AT 7 SECONDS, BECOMING E 11 FT AT 9 SECONDS AND NE 5 FT AT
6 SECONDS.
MON AND MON NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 10 TO 14 FT. WAVE DETAIL: E 13 FT AT 11 SECONDS AND NE 4 FT
AT 3 SECONDS. A CHANCE OF SHOWERS.
TUE
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 9 TO
11 FT. WAVE DETAIL: E 11 FT AT 10 SECONDS AND E 11 FT AT
11 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT THROUGH WED NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP
TO 40 KT. SEAS 9 TO 12 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.
ANZ282-180300-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1005 AM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY
MORNING...
THIS AFTERNOON
N WINDS AROUND 25 KT WITH GUSTS UP TO 30 KT.
SEAS 6 TO 7 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS AND SW 4 FT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
8 FT. WAVE DETAIL: N 7 FT AT 7 SECONDS AND SE 7 FT AT 9 SECONDS.
SUN
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 6 TO 9 FT. WAVE DETAIL: NE
9 FT AT 8 SECONDS AND N 7 FT AT 7 SECONDS.
SUN NIGHT
NE WINDS 15 TO 20 KT, BECOMING E 20 TO 25 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 7 TO 10 FT, BUILDING TO 9 TO
12 FT AFTER MIDNIGHT. WAVE DETAIL: E 10 FT AT 9 SECONDS AND N
7 FT AT 7 SECONDS, BECOMING E 12 FT AT 10 SECONDS AND E 12 FT AT
11 SECONDS.
MON AND MON NIGHT
NE WINDS 25 TO 30 KT. SEAS 10 TO 14 FT. WAVE
DETAIL: E 14 FT AT 11 SECONDS AND NE 6 FT AT 6 SECONDS. A CHANCE
OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 9 TO
11 FT. WAVE DETAIL: NE 11 FT AT 10 SECONDS AND E 10 FT AT
11 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT AND WED
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 9 TO 12 FT.
WED NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
11 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.
ANZ283-180300-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1005 AM EDT SAT OCT 17 2026
...GALE WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH SUNDAY
MORNING...
THIS AFTERNOON
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: N 6 FT AT 6 SECONDS AND S 3 FT AT
7 SECONDS. RAIN.
TONIGHT
N WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
8 FT. WAVE DETAIL: N 8 FT AT 6 SECONDS AND E 8 FT AT 9 SECONDS.
SUN
NE WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 6 TO 9 FT. WAVE DETAIL: E 9 FT
AT 9 SECONDS AND N 6 FT AT 6 SECONDS.
SUN NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
7 TO 10 FT, BUILDING TO 9 TO 13 FT AFTER MIDNIGHT. WAVE DETAIL: E
10 FT AT 10 SECONDS AND N 7 FT AT 6 SECONDS, BECOMING E 13 FT AT
11 SECONDS AND NE 7 FT AT 6 SECONDS.
MON AND MON NIGHT
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 11 TO 15 FT. WAVE DETAIL: E 15 FT AT 9 SECONDS AND E 15 FT
AT 12 SECONDS. A CHANCE OF SHOWERS.
TUE
NE WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 10 TO
12 FT. WAVE DETAIL: NE 11 FT AT 10 SECONDS AND E 11 FT AT
11 SECONDS. A CHANCE OF SHOWERS.
TUE NIGHT AND WED
NE WINDS 25 TO 35 KT, BECOMING 30 TO 35 KT.
GUSTS UP TO 45 KT. SEAS 9 TO 12 FT.
WED NIGHT
NE WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT. SEAS
11 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.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page