706
FZUS51 KBOX 191105
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 AM EDT SUN APR 19 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-200000-
704 AM EDT SUN APR 19 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A STRONG COLD FRONT MOVES OVER THE WATERS TODAY. HIGH PRES RETURNS
OVER THE WATERS EARLY NEXT WEEK THEN A WEAK LOW PRESSURE CROSSES THE
WATERS WED.
ANZ250-200000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...
TODAY
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING W
20 TO 25 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND SW 1 FOOT AT
3 SECONDS. PATCHY FOG. A CHANCE OF RAIN THIS MORNING, THEN RAIN
WITH A SLIGHT CHANCE OF TSTMS THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT, BECOMING W 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 7 SECONDS AND NW 3 FT AT 4 SECONDS. PATCHY FOG IN THE EVENING.
A CHANCE OF RAIN IN THE EVENING WITH VSBY 1 TO 3 NM.
MON
W WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
W 2 FT AT 4 SECONDS.
MON NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND NE
3 FT AT 8 SECONDS.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 5 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 4 SECONDS AND NE 2 FT AT 6 SECONDS.
WED THROUGH THU NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-200000-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...
TODAY
S WINDS 5 TO 10 KT, BECOMING W 20 TO 25 KT WITH GUSTS UP
TO 30 KT THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT
7 SECONDS AND SW 2 FT AT 3 SECONDS. PATCHY DENSE FOG THIS
MORNING. PATCHY FOG THIS AFTERNOON. RAIN WITH A SLIGHT CHANCE OF
TSTMS. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, BECOMING
W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 3 FT AT 3 SECONDS AND E 3 FT AT 7 SECONDS.
PATCHY FOG IN THE EVENING. A CHANCE OF RAIN IN THE EVENING WITH
VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NW 3 FT AT 3 SECONDS AND
NE 3 FT AT 7 SECONDS.
TUE
N 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: N 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 3 SECONDS AND NE 2 FT AT 6 SECONDS.
WED THROUGH THU NIGHT
N WINDS 10 TO 15 KT. SEAS AROUND 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-200000-
CAPE COD BAY-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...
TODAY
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING W
20 TO 25 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND NE 1 FOOT AT
5 SECONDS. PATCHY FOG. A CHANCE OF RAIN THIS MORNING, THEN RAIN
WITH ISOLATED TSTMS THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, BECOMING
W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND NE 2 FT AT 7 SECONDS.
PATCHY FOG IN THE EVENING. A CHANCE OF RAIN IN THE EVENING WITH
VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT
AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
MON NIGHT
NW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS AROUND 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-200000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...
TODAY
S WINDS 10 TO 15 KT, BECOMING SW 15 TO 20 KT THIS
AFTERNOON. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT
AT 5 SECONDS AND E 4 FT AT 7 SECONDS. PATCHY FOG. A SLIGHT CHANCE
OF RAIN THIS MORNING. RAIN LIKELY WITH ISOLATED TSTMS THIS
AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT
AT 4 SECONDS AND SE 3 FT AT 7 SECONDS. PATCHY FOG IN THE EVENING.
A CHANCE OF RAIN IN THE EVENING WITH VSBY 1 TO 3 NM.
MON
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS AND SE 2 FT AT
7 SECONDS.
MON NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 8 SECONDS AND NW 2 FT AT 4 SECONDS.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT
AT 6 SECONDS AND S 1 FOOT AT 7 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT
6 SECONDS.
WED
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
WED NIGHT THROUGH THU NIGHT
NW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-200000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...
TODAY
S WINDS 15 TO 20 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 30 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO 5 FT THIS
AFTERNOON. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND S 1 FOOT AT
2 SECONDS, BECOMING SW 4 FT AT 6 SECONDS AND E 3 FT AT 7 SECONDS.
PATCHY FOG. A SLIGHT CHANCE OF RAIN THIS MORNING. RAIN LIKELY
WITH ISOLATED TSTMS THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT
AT 5 SECONDS AND S 3 FT AT 6 SECONDS. PATCHY FOG IN THE EVENING.
A CHANCE OF RAIN IN THE EVENING WITH VSBY 1 TO 3 NM.
MON
W WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: W 3 FT AT 6 SECONDS AND SE 2 FT AT
7 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 8 SECONDS AND
SW 2 FT AT 6 SECONDS.
TUE
N WINDS 15 TO 20 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND S
1 FOOT AT 7 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E
2 FT AT 6 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-200000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...
TODAY
SE WINDS 15 TO 20 KT, BECOMING W 20 TO 25 KT THIS
AFTERNOON. GUSTS UP TO 30 KT. SEAS 2 TO 4 FT, BUILDING TO 4 TO
5 FT THIS AFTERNOON. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW
1 FOOT AT 2 SECONDS, BECOMING W 3 FT AT 3 SECONDS AND SE 3 FT AT
7 SECONDS. PATCHY DENSE FOG. A CHANCE OF RAIN THIS MORNING. RAIN
LIKELY WITH ISOLATED TSTMS THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 15 TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE
DETAIL: NW 3 FT AT 4 SECONDS AND S 3 FT AT 6 SECONDS. A CHANCE OF
RAIN IN THE EVENING.
MON
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
6 SECONDS AND E 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. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND
SW 2 FT AT 7 SECONDS.
TUE
N WINDS 15 TO 20 KT, BECOMING NW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND
NE 3 FT AT 7 SECONDS.
TUE NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 6 SECONDS AND W 2 FT AT 3 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-200000-
NANTUCKET SOUND-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...
TODAY
S WINDS 15 TO 20 KT, BECOMING SW THIS AFTERNOON. GUSTS
UP TO 30 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS
AND SW 2 FT AT 3 SECONDS. PATCHY FOG. A CHANCE OF RAIN THIS
MORNING. RAIN LIKELY WITH ISOLATED TSTMS THIS AFTERNOON. VSBY
1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 15 TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: NW 3 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. PATCHY FOG
IN THE EVENING. A CHANCE OF RAIN IN THE EVENING WITH VSBY 1 TO
3 NM.
MON
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT
AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS.
MON NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 2 FT AT 4 SECONDS AND NE 2 FT AT 7 SECONDS.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NW
2 FT AT 5 SECONDS AND S 1 FOOT AT 6 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 5 SECONDS
AND W 1 FOOT AT 6 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-200000-
VINEYARD SOUND-
704 AM EDT SUN APR 19 2026
TODAY
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
15 TO 20 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND SW 1 FOOT AT
2 SECONDS. PATCHY FOG. A CHANCE OF RAIN THIS MORNING, THEN RAIN
WITH ISOLATED TSTMS THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT, BECOMING
W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
7 SECONDS. PATCHY FOG IN THE EVENING. A CHANCE OF RAIN IN THE
EVENING.
MON
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT
AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS. A CHANCE OF RAIN IN THE
AFTERNOON.
MON NIGHT
NW WINDS AROUND 10 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND
SW 1 FOOT AT 6 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S
1 FOOT AT 6 SECONDS, BECOMING NW 1 FOOT AT 4 SECONDS AND NE
1 FOOT AT 4 SECONDS.
TUE NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND E 1 FOOT AT 5 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-200000-
BUZZARDS BAY-
704 AM EDT SUN APR 19 2026
TODAY
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
15 TO 20 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND SW 1 FOOT AT
2 SECONDS. PATCHY FOG. RAIN LIKELY. A SLIGHT CHANCE OF TSTMS THIS
AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW 2 FT
AT 3 SECONDS AND SW 2 FT AT 6 SECONDS. A CHANCE OF RAIN IN THE
EVENING.
MON
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT
AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS. A CHANCE OF RAIN IN THE
AFTERNOON.
MON NIGHT
NW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS, BECOMING NE 1 FOOT AT 3 SECONDS AND NW
1 FOOT AT 5 SECONDS.
TUE NIGHT
S WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT 6 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS AROUND 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-200000-
RHODE ISLAND SOUND-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 6 PM
EDT THIS EVENING...
TODAY
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
20 TO 25 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT AT
2 SECONDS. PATCHY FOG. ISOLATED TSTMS. A CHANCE OF RAIN THIS
MORNING, THEN RAIN THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT, BECOMING
W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO
4 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND SE 3 FT AT 7 SECONDS.
A CHANCE OF RAIN IN THE EVENING.
MON
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
4 SECONDS AND S 2 FT AT 7 SECONDS. A CHANCE OF RAIN IN THE
AFTERNOON.
MON NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE
2 FT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
TUE AND TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND N 2 FT AT
4 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-200000-
BLOCK ISLAND SOUND-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 6 PM
EDT THIS EVENING...
TODAY
SE WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING NW
15 TO 20 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 2 TO
4 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
PATCHY DENSE FOG THIS MORNING. PATCHY FOG THIS AFTERNOON. RAIN
LIKELY WITH A SLIGHT CHANCE OF TSTMS. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NW 2 FT
AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. A CHANCE OF RAIN IN THE
EVENING.
MON
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. A CHANCE OF RAIN IN THE
AFTERNOON.
MON NIGHT
NW WINDS 10 TO 15 KT, BECOMING N WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: NW 2 FT AT
3 SECONDS AND SE 2 FT AT 7 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
TUE AND TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 2 FT AT
4 SECONDS.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: S 3 FT AT 7 SECONDS AND NW 2 FT AT 2 SECONDS.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-200000-
BOSTON HARBOR-
704 AM EDT SUN APR 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON
THROUGH THIS EVENING...
TODAY
S WINDS AROUND 5 KT, BECOMING W 15 TO 20 KT WITH GUSTS
UP TO 30 KT THIS AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT THIS AFTERNOON. PATCHY FOG. RAIN WITH A SLIGHT CHANCE OF
TSTMS. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM THIS AFTERNOON.
TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT, BECOMING
W 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT. WAVES AROUND
2 FT. A CHANCE OF RAIN IN THE EVENING.
MON
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE OF RAIN
IN THE AFTERNOON.
MON NIGHT
N WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT AFTER MIDNIGHT.
TUE
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
TUE NIGHT
S WINDS 10 TO 15 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
WED THROUGH THU NIGHT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-200000-
NARRAGANSETT BAY-
704 AM EDT SUN APR 19 2026
TODAY
S WINDS 5 TO 10 KT, BECOMING NW 15 TO 20 KT WITH GUSTS
UP TO 30 KT THIS AFTERNOON. WAVES 2 TO 3 FT. PATCHY FOG. RAIN
WITH A SLIGHT CHANCE OF TSTMS. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. WAVES AROUND 2 FT. A CHANCE OF RAIN
IN THE EVENING.
MON
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF RAIN IN
THE AFTERNOON.
MON NIGHT
NW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS IN THE EVENING.
TUE AND TUE NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED THROUGH THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES AROUND 2 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-200000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 AM EDT SUN APR 19 2026
TODAY
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
15 TO 20 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 4 TO
5 FT. WAVE DETAIL: SE 5 FT AT 7 SECONDS AND SW 1 FOOT AT
4 SECONDS. PATCHY FOG. A CHANCE OF RAIN THIS MORNING, THEN RAIN
WITH A SLIGHT CHANCE OF TSTMS THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 5 FT. WAVE DETAIL: NW 4 FT
AT 4 SECONDS AND SE 4 FT AT 7 SECONDS. PATCHY FOG IN THE EVENING.
RAIN LIKELY IN THE EVENING WITH VSBY 1 NM OR LESS.
MON
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: W 4 FT
AT 5 SECONDS AND SE 2 FT AT 7 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 8 SECONDS AND N
3 FT AT 4 SECONDS.
TUE
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT
AT 6 SECONDS AND S 1 FOOT AT 7 SECONDS.
TUE NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND NE 2 FT AT 6 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
3 FT. A CHANCE OF SHOWERS.
WED NIGHT THROUGH THU NIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO
4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-200000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 AM EDT SUN APR 19 2026
TODAY
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, INCREASING
TO 15 TO 20 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 4 TO
6 FT. WAVE DETAIL: E 5 FT AT 7 SECONDS AND S 4 FT AT 6 SECONDS.
PATCHY FOG. A CHANCE OF RAIN WITH ISOLATED TSTMS THIS AFTERNOON.
VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 5 FT. WAVE DETAIL: NW 5 FT
AT 5 SECONDS AND S 4 FT AT 6 SECONDS. PATCHY FOG IN THE EVENING.
RAIN LIKELY IN THE EVENING WITH VSBY 1 NM OR LESS.
MON
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NW 4 FT
AT 6 SECONDS AND S 2 FT AT 7 SECONDS.
MON NIGHT
SW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: NE
3 FT AT 8 SECONDS AND NW 2 FT AT 5 SECONDS.
TUE
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 3 TO 5 FT. WAVE DETAIL: N 4 FT AT 6 SECONDS AND SW 1 FOOT AT
7 SECONDS.
TUE NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 6 SECONDS AND S 1 FOOT AT
7 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. A CHANCE OF SHOWERS.
WED NIGHT THROUGH THU NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 TO
5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-200000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 AM EDT SUN APR 19 2026
TODAY
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 4 FT AT 7 SECONDS.
PATCHY FOG. A CHANCE OF RAIN THIS AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
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: W 5 FT
AT 6 SECONDS AND E 3 FT AT 7 SECONDS. PATCHY FOG IN THE EVENING.
RAIN LIKELY IN THE EVENING WITH VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: W 4 FT AT 6 SECONDS AND S
2 FT AT 7 SECONDS.
MON NIGHT
W WINDS 5 TO 10 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND
NE 3 FT AT 8 SECONDS. A CHANCE OF SHOWERS.
TUE
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: N 4 FT AT 6 SECONDS AND S
1 FOOT AT 8 SECONDS.
TUE NIGHT
N WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: NE 3 FT AT 6 SECONDS AND W 1 FOOT AT
5 SECONDS.
WED
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT, DIMINISHING TO 5 TO
10 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.
ANZ283-200000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 AM EDT SUN APR 19 2026
TODAY
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING W
20 TO 25 KT WITH GUSTS UP TO 35 KT THIS AFTERNOON. SEAS 3 TO
5 FT, BUILDING TO 5 TO 6 FT THIS AFTERNOON. WAVE DETAIL: SE 4 FT
AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS, BECOMING SW 4 FT AT
5 SECONDS AND E 3 FT AT 7 SECONDS. PATCHY DENSE FOG. A SLIGHT
CHANCE OF RAIN THIS MORNING. RAIN LIKELY WITH ISOLATED TSTMS THIS
AFTERNOON. VSBY 1 NM OR LESS.
TONIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT,
DIMINISHING TO 15 TO 20 KT WITH GUSTS UP TO 25 KT AFTER MIDNIGHT.
SEAS 4 TO 6 FT. WAVE DETAIL: NW 5 FT AT 6 SECONDS AND S 3 FT AT
6 SECONDS. PATCHY FOG IN THE EVENING. A CHANCE OF RAIN IN THE
EVENING WITH VSBY 1 TO 3 NM.
MON
W WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 2 FT AT 7 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND E
2 FT AT 7 SECONDS.
TUE
N WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND
NE 4 FT AT 8 SECONDS.
TUE NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E
2 FT AT 7 SECONDS.
WED AND WED NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING E. SEAS 4 TO 6 FT.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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