542
FZUS51 KBOX 180205
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1004 PM EDT FRI APR 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-181500-
1004 PM EDT FRI APR 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
SHOWERS LINGER THROUGH THIS EVENING. NE WINDS THROUGH SAT ON THE
BACKSIDE OF A LOW. A STRONG COLD FRONT THEN MOVES OVER THE WATERS ON
SUN.
ANZ250-181500-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
N WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS. AREAS OF FOG WITH VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS. AREAS OF FOG. VSBY 1 NM OR LESS, INCREASING TO 1 TO
3 NM IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND N 1 FOOT AT
3 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT
8 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG. A CHANCE OF RAIN
IN THE MORNING, THEN RAIN WITH SNOW LIKELY IN THE AFTERNOON. VSBY
1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND W 3 FT AT
4 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW LIKELY IN THE
EVENING.
MON AND MON NIGHT
N WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: W 3 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
TUE THROUGH WED NIGHT
W WINDS 15 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.
ANZ251-181500-
MASSACHUSETTS BAY AND IPSWICH BAY-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. AREAS OF FOG
WITH VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. AREAS OF FOG. VSBY 1 NM
OR LESS IN THE MORNING.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND S 1 FOOT AT
8 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT
8 SECONDS AND S 4 FT AT 12 SECONDS. PATCHY FOG. RAIN. SNOW LIKELY
IN THE AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 8 SECONDS AND W 2 FT AT 3 SECONDS. PATCHY FOG IN THE
EVENING. RAIN AND SNOW LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND NW 2 FT AT
3 SECONDS.
TUE THROUGH WED NIGHT
NW WINDS 15 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.
ANZ231-181500-
CAPE COD BAY-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
8 SECONDS, BECOMING N 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
8 SECONDS. AREAS OF FOG WITH VSBY 1 NM OR LESS.
SAT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND S 1 FOOT AT 8 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 4 SECONDS AND S 1 FOOT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS. PATCHY FOG. A
CHANCE OF RAIN IN THE MORNING, THEN RAIN AND SNOW LIKELY IN THE
AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW LIKELY IN THE
EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NW 2 FT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
TUE THROUGH WED NIGHT
W 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.
ANZ254-181500-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S 3 FT AT
7 SECONDS. AREAS OF FOG. VSBY 1 NM OR LESS, INCREASING TO 1 TO
3 NM IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
3 TO 5 FT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND SW 3 FT AT 5 SECONDS.
PATCHY FOG. RAIN AND SNOW LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM
IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND NW 3 FT AT
4 SECONDS. RAIN AND SNOW LIKELY IN THE EVENING, THEN A CHANCE OF
RAIN AFTER MIDNIGHT. PATCHY FOG IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS AND SE 2 FT AT
7 SECONDS.
TUE THROUGH WED NIGHT
W WINDS 15 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.
ANZ255-181500-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND N 2 FT AT 3 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND
E 4 FT AT 8 SECONDS. PATCHY FOG. RAIN LIKELY IN THE AFTERNOON.
VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND E 3 FT AT
8 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW LIKELY IN THE
EVENING.
MON
W WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND SE 2 FT AT 7 SECONDS.
MON NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT.
TUE
N WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
TUE NIGHT AND WED
SW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
WED NIGHT
NW WINDS 10 TO 15 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.
ANZ256-181500-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND N 2 FT AT 3 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
S WINDS 10 TO 15 KT, BECOMING W 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
4 FT AT 4 SECONDS AND E 3 FT AT 8 SECONDS. PATCHY FOG. A CHANCE
OF RAIN IN THE MORNING, THEN RAIN AND SNOW LIKELY IN THE
AFTERNOON. VSBY 1 NM OR LESS IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND SE 3 FT AT
7 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW LIKELY IN THE
EVENING.
MON AND MON NIGHT
N WINDS 15 TO 20 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: NW 3 FT AT 4 SECONDS AND S 2 FT AT 6 SECONDS.
TUE
N WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
TUE NIGHT THROUGH WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 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.
ANZ232-181500-
NANTUCKET SOUND-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 3 SECONDS AND S 1 FOOT AT 7 SECONDS. AREAS OF FOG. VSBY
1 TO 3 NM, DECREASING TO 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 1 FOOT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND
SE 2 FT AT 7 SECONDS. PATCHY FOG. RAIN AND SNOW LIKELY IN THE
AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS
AND S 2 FT AT 6 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW
LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NW 2 FT AT 3 SECONDS AND NE 2 FT AT 6 SECONDS.
TUE THROUGH WED NIGHT
NW WINDS 15 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.
ANZ233-181500-
VINEYARD SOUND-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS. AREAS OF FOG WITH
VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 4 SECONDS AND SW 2 FT AT 7 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS IN THE MORNING.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 4 SECONDS AND S 1 FOOT AT
6 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT, BECOMING W IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE
2 FT AT 7 SECONDS. PATCHY FOG. A CHANCE OF RAIN IN THE MORNING,
THEN RAIN AND SNOW LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM IN THE
MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS
AND E 1 FOOT AT 8 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND
SNOW LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS.
TUE
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT.
TUE NIGHT THROUGH WED NIGHT
NW WINDS 15 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.
ANZ234-181500-
BUZZARDS BAY-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS. AREAS OF FOG WITH
VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 7 SECONDS. AREAS OF FOG IN
THE MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: NE
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS. AREAS OF FOG IN
THE EVENING. PATCHY FOG AFTER MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT, BECOMING W IN THE AFTERNOON. GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
E 1 FOOT AT 5 SECONDS. PATCHY FOG. A CHANCE OF RAIN IN THE
MORNING, THEN RAIN WITH SNOW LIKELY IN THE AFTERNOON. VSBY 1 TO
3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E
1 FOOT AT 7 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW
LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND E 2 FT AT 7 SECONDS.
TUE THROUGH WED NIGHT
NW WINDS 15 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.
ANZ235-181500-
RHODE ISLAND SOUND-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND NE 1 FOOT AT 3 SECONDS. AREAS OF FOG WITH
VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
S WINDS 10 TO 15 KT, BECOMING W 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND
W 2 FT AT 3 SECONDS. PATCHY FOG. A CHANCE OF RAIN IN THE MORNING,
THEN RAIN WITH SNOW LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM IN
THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 3 FT AT
7 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW LIKELY IN THE
EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 2 FT AT
7 SECONDS.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT.
TUE NIGHT THROUGH WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 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.
ANZ237-181500-
BLOCK ISLAND SOUND-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS. AREAS OF FOG. VSBY
1 TO 3 NM.
SAT
NE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND NE 2 FT AT 4 SECONDS. AREAS OF FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
S WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
3 SECONDS AND SE 2 FT AT 7 SECONDS. PATCHY FOG. A CHANCE OF RAIN
IN THE MORNING, THEN RAIN WITH SNOW LIKELY IN THE AFTERNOON. VSBY
1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE
2 FT AT 7 SECONDS. PATCHY FOG IN THE EVENING. RAIN AND SNOW
LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NW 2 FT AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
TUE THROUGH WED NIGHT
NW WINDS 15 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.
ANZ230-181500-
BOSTON HARBOR-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. AREAS OF
FOG WITH VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. WAVES AROUND 2 FT. AREAS OF FOG IN
THE MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS. A CHANCE OF. AREAS OF FOG IN THE EVENING,
THEN PATCHY FOG AFTER MIDNIGHT. A CHANCE OF. VSBY 1 TO 3 NM.
SUN
S WINDS 5 TO 10 KT, BECOMING W 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. PATCHY FOG. RAIN. SNOW LIKELY IN THE AFTERNOON.
VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. PATCHY FOG IN THE EVENING. RAIN AND
SNOW LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
TUE THROUGH WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ236-181500-
NARRAGANSETT BAY-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. AREAS OF FOG
WITH VSBY 1 NM OR LESS.
SAT
NE WINDS AROUND 10 KT. WAVES AROUND 2 FT. AREAS OF FOG IN
THE MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. WAVES
AROUND 2 FT. WITH PATCHY FOG.
SUN
S WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. WAVES AROUND 2 FT. PATCHY FOG. RAIN.
SNOW LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES 2 TO 3 FT. PATCHY FOG IN THE EVENING. RAIN AND
SNOW LIKELY IN THE EVENING.
MON AND MON NIGHT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE THROUGH WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ280-181500-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT
8 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG WITH VSBY 1 NM OR
LESS.
SAT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS. AREAS OF FOG. VSBY 1 NM
OR LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
E WINDS 10 TO 15 KT, BECOMING S AROUND 5 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 7 SECONDS.
AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER MIDNIGHT. VSBY 1 TO
3 NM.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND SW 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF RAIN IN THE MORNING, THEN RAIN
AND SNOW LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: W 4 FT AT 4 SECONDS AND SE 4 FT AT
7 SECONDS. RAIN AND SNOW LIKELY IN THE EVENING, THEN A CHANCE OF
RAIN AFTER MIDNIGHT. PATCHY FOG IN THE EVENING.
MON AND MON NIGHT
N WINDS 15 TO 20 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: NW 4 FT AT 5 SECONDS AND SE 2 FT AT 7 SECONDS.
TUE THROUGH WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO
25 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.
ANZ281-181500-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND N 2 FT AT 4 SECONDS.
AREAS OF FOG. VSBY 1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 5 FT AT 6 SECONDS AND S 3 FT AT 7 SECONDS.
AREAS OF FOG. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM IN THE
AFTERNOON.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
4 TO 5 FT. WAVE DETAIL: E 5 FT AT 8 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM.
SUN
S WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT
AT 8 SECONDS AND S 4 FT AT 6 SECONDS. PATCHY FOG. RAIN LIKELY IN
THE AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND S 4 FT AT
6 SECONDS. RAIN AND SNOW LIKELY IN THE EVENING, THEN A CHANCE OF
RAIN AFTER MIDNIGHT. PATCHY FOG IN THE EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS AND S 3 FT AT
7 SECONDS.
TUE AND TUE NIGHT
N WINDS 10 TO 15 KT, BECOMING SW 15 TO
20 KT. SEAS 2 TO 4 FT.
WED AND WED NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO
15 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.
ANZ282-181500-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: N 3 FT
AT 5 SECONDS AND S 3 FT AT 7 SECONDS. AREAS OF FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
NE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: NE 4 FT AT 8 SECONDS AND S 2 FT AT
7 SECONDS. AREAS OF FOG IN THE EVENING. PATCHY FOG AFTER
MIDNIGHT. VSBY 1 TO 3 NM IN THE EVENING.
SUN
S WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT
AT 8 SECONDS AND SW 4 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING.
RAIN LIKELY IN THE AFTERNOON. VSBY 1 TO 3 NM IN THE MORNING.
SUN NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 6 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND E 3 FT AT
8 SECONDS. RAIN LIKELY, MAINLY IN THE EVENING. PATCHY FOG IN THE
EVENING.
MON AND MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: N 4 FT AT 7 SECONDS AND SW 3 FT AT
7 SECONDS.
TUE AND TUE NIGHT
N WINDS 15 TO 20 KT, BECOMING SW 10 TO
15 KT. SEAS 3 TO 5 FT.
WED AND WED NIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO
15 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.
ANZ283-181500-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1004 PM EDT FRI APR 17 2026
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS AROUND 4 FT. WAVE DETAIL:
S 4 FT AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG. VSBY
1 NM OR LESS.
SAT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND N 2 FT AT 4 SECONDS. AREAS OF FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND S 2 FT AT
7 SECONDS. WITH PATCHY FOG.
SUN
S WINDS 15 TO 20 KT, BECOMING W IN THE AFTERNOON. GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO 5 FT IN THE AFTERNOON.
WAVE DETAIL: SE 4 FT AT 7 SECONDS, BECOMING SW 4 FT AT 5 SECONDS
AND E 3 FT AT 8 SECONDS. PATCHY FOG. RAIN LIKELY IN THE
AFTERNOON. VSBY 1 NM OR LESS IN THE MORNING.
SUN NIGHT
NW 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:
NW 4 FT AT 5 SECONDS AND S 3 FT AT 6 SECONDS. PATCHY FOG IN THE
EVENING. RAIN LIKELY IN THE EVENING.
MON
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 3 TO 5 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS AND S 3 FT AT
7 SECONDS.
MON NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT.
TUE
N WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
TUE NIGHT
SW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
WED AND WED NIGHT
SW WINDS 15 TO 20 KT, BECOMING NW 10 TO
15 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.
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