284
FZUS51 KBOX 031804
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 PM EST Sat Jan 3 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM

ANZ200-040700-
104 PM EST Sat Jan 3 2026

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres remains S of New England today. Low pres is expected to
track well SE of the 40N/70W benchmark Sun, followed by another high
pres for Mon. Low pres may return Tue or Wed, passing W of the
waters.

$$

ANZ250-040700-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at
11 seconds.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at
11 seconds. A chance of snow after midnight.
.SUN...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and E 1 foot
at 10 seconds. A chance of snow 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 4 ft at 5 seconds and NE 1 foot at
8 seconds. Light freezing spray.
.MON...NW winds 15 to 20 kt, becoming W 5 to 10 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and
NE 3 ft at 8 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W
2 ft at 3 seconds and NE 2 ft at 8 seconds. A chance of snow.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of snow.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas 2 to
3 ft. A chance of rain.
.WED NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-040700-
Massachusetts Bay and Ipswich Bay-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot
at 11 seconds.
.TONIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas around 2 ft in the evening, then 1 foot or less. Wave
Detail: W 2 ft at 3 seconds and E 1 foot at 11 seconds, becoming
NW 1 foot at 3 seconds and E 1 foot at 10 seconds. A chance of
snow after midnight.
.SUN...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 1 foot or less, then around
2 ft in the afternoon. Wave Detail: NW 1 foot at 3 seconds and E
1 foot at 10 seconds. A chance of snow in the morning.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 3 ft at 3 seconds and E 1 foot at
10 seconds. Light freezing spray.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft
at 4 seconds and NE 2 ft at 7 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NE 2 ft at 8 seconds and W 1 foot at 3 seconds. A chance of snow.
.TUE...S winds around 5 kt. Seas around 2 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas
around 2 ft. A chance of rain.
.WED NIGHT...NW winds around 10 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.

$$

ANZ231-040700-
Cape Cod Bay-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot
at 11 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: NW 2 ft at 4 seconds and E
1 foot at 10 seconds, becoming NW 1 foot at 4 seconds and E
1 foot at 9 seconds. A chance of snow after midnight.
.SUN...NW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 1 foot or less, then around 2 ft in the afternoon. Wave
Detail: NW 1 foot at 4 seconds and E 1 foot at 9 seconds,
becoming NW 1 foot at 3 seconds and E 1 foot at 9 seconds. A
chance of snow in the morning.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and NE 2 ft at
9 seconds. Light freezing spray after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft
at 5 seconds and NE 2 ft at 8 seconds.
.MON NIGHT...SW winds around 5 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 7 seconds and NW 1 foot at 4 seconds. A chance of snow.
.TUE...S winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas
1 foot or less, then around 2 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 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.

$$

ANZ254-040700-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at
11 seconds.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 5 seconds and E 1 foot at 10 seconds. A chance of snow
after midnight.
.SUN...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E 1 foot at
10 seconds. A chance of snow in the morning with vsby 1 to 3 NM.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and NE 2 ft at
10 seconds. Light freezing spray after midnight.
.MON...NW winds 15 to 20 kt, becoming W 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 6 seconds and
NE 3 ft at 9 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: N
3 ft at 8 seconds and W 1 foot at 5 seconds. A chance of snow
after midnight.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas 2 to
4 ft. A chance of rain.
.WED NIGHT...NW winds around 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.

$$

ANZ255-040700-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: W 4 ft at 6 seconds and E 1 foot at 11 seconds.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at
11 seconds. A chance of snow after midnight.
.SUN...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and E 1 foot at
10 seconds. A chance of snow in the morning.
.SUN NIGHT...NW winds 20 to 25 kt. Seas 3 to 5 ft. Wave Detail:
NW 5 ft at 6 seconds and E 1 foot at 11 seconds. Light freezing
spray after midnight.
.MON...NW winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and
NE 2 ft at 10 seconds. Light freezing spray in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and SE 2 ft at 9 seconds.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW 10 to
15 kt. Seas 2 to 4 ft. A chance of rain.
.WED NIGHT...NW winds around 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.

$$

ANZ256-040700-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt. Seas 2 to 4 ft. Wave
Detail: W 3 ft at 6 seconds and E 1 foot at 11 seconds.
.TONIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at
11 seconds. A chance of snow after midnight.
.SUN...NW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and E 1 foot at
10 seconds.
.SUN NIGHT...NW winds 20 to 25 kt. Seas 3 to 5 ft. Wave Detail:
NW 4 ft at 5 seconds and E 1 foot at 10 seconds. Light freezing
spray after midnight.
.MON...NW winds 15 to 20 kt, becoming W 5 to 10 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and
E 1 foot at 11 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 3 seconds and S 1 foot at 9 seconds.
.TUE...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW 10 to
15 kt. Seas 2 to 4 ft. A chance of rain.
.WED NIGHT...NW winds 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.

$$

ANZ232-040700-
Nantucket Sound-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: W 2 ft at 4 seconds and E 1 foot at 11 seconds.
.TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W
2 ft at 4 seconds and E 1 foot at 11 seconds. A chance of snow
after midnight.
.SUN...NW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds
and E 1 foot at 10 seconds. A chance of snow in the morning.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
NW 3 ft at 4 seconds and NE 1 foot at 10 seconds. Light freezing
spray after midnight.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft
at 4 seconds and NE 1 foot at 10 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
W 1 foot at 2 seconds and E 1 foot at 9 seconds.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas
around 2 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-040700-
Vineyard Sound-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 5 seconds and SE 1 foot at 11 seconds.
.TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 5 seconds and E 1 foot at 11 seconds. A chance of snow
after midnight.
.SUN...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: NW
1 foot at 5 seconds and E 1 foot at 10 seconds. A chance of snow
in the morning.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
NW 2 ft at 4 seconds and E 1 foot at 10 seconds. Light freezing
spray after midnight.
.MON...NW winds 10 to 15 kt, becoming W around 5 kt in the
afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds
and NE 1 foot at 10 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less, then
around 2 ft after midnight. Wave Detail: SW 1 foot at 5 seconds
and S 1 foot at 9 seconds, becoming SW 1 foot at 3 seconds and S
1 foot at 8 seconds.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas
around 2 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-040700-
Buzzards Bay-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 5 seconds and SE 1 foot at 11 seconds.
.TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SW 2 ft at 4 seconds and E
1 foot at 11 seconds, becoming SW 1 foot at 5 seconds and E
1 foot at 10 seconds. A chance of snow after midnight.
.SUN...NW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NW
1 foot at 5 seconds and E 1 foot at 10 seconds. A chance of snow
in the morning.
.SUN NIGHT...NW winds 15 to 20 kt. Seas around 2 ft. Wave Detail:
NW 2 ft at 3 seconds and E 1 foot at 10 seconds.
.MON...NW winds 10 to 15 kt, becoming W around 5 kt in the
afternoon. Seas around 2 ft in the morning, then 1 foot or less.
Wave Detail: NW 2 ft at 4 seconds and NE 1 foot at 9 seconds,
becoming E 1 foot at 4 seconds and W 1 foot at 4 seconds.
.MON NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave
Detail: SW 1 foot at 5 seconds.
.TUE...SE winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas
1 foot or less, then around 2 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-040700-
Rhode Island Sound-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: W 3 ft at 5 seconds and SE 1 foot at 11 seconds.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: W 2 ft at 6 seconds and SE 1 foot at
11 seconds. A chance of snow after midnight.
.SUN...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft
at 7 seconds and E 1 foot at 11 seconds.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E 1 foot at
10 seconds. Light freezing spray after midnight.
.MON...NW winds 10 to 15 kt, becoming W around 5 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and
E 1 foot at 10 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 5 seconds and S 1 foot at 9 seconds.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas 2 to
3 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 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.

$$

ANZ237-040700-
Block Island Sound-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 5 seconds and SE 1 foot at 10 seconds.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: W 2 ft at 6 seconds and SE 1 foot at
11 seconds. A chance of snow after midnight.
.SUN...N winds 5 to 10 kt, becoming NW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft
at 7 seconds and SE 1 foot at 10 seconds.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and SE 1 foot at
10 seconds.
.MON...NW winds 10 to 15 kt, becoming W around 5 kt in the
afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds
and E 1 foot at 10 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 1 foot at 3 seconds and S 1 foot at 9 seconds.
.TUE...SE winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Seas 2 to
3 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 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.

$$

ANZ230-040700-
Boston Harbor-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds around 10 kt with gusts up to 20 kt.
Waves around 2 ft.
.TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less. A chance of
snow after midnight.
.SUN...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of
snow in the morning.
.SUN NIGHT...NW winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Waves around 2 ft.
.MON...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Waves around 2 ft in the morning, then 1 foot or less.
.MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of snow.
.TUE...S winds around 5 kt. Waves 1 foot or less.
.TUE NIGHT AND WED...SE winds 5 to 10 kt, becoming SW. Waves
1 foot or less. A chance of rain.
.WED NIGHT...W winds 5 to 10 kt. Waves 1 foot or less.

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.

$$

ANZ236-040700-
Narragansett Bay-
104 PM EST Sat Jan 3 2026

.THIS AFTERNOON...W winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves
around 2 ft in the evening, then 1 foot or less. A chance of snow
after midnight.
.SUN...NW winds 5 to 10 kt. Waves 1 foot or less.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.MON...NW winds 5 to 10 kt, becoming W in the afternoon. Waves
around 2 ft in the morning, then 1 foot or less.
.MON NIGHT...SW winds around 5 kt. Waves 1 foot or less.
.TUE...E winds around 5 kt. Waves around 2 ft.
.TUE NIGHT AND WED...SE winds around 5 kt, becoming W. Waves
1 foot or less, then around 2 ft. A chance of rain.
.WED NIGHT...NW winds 5 to 10 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.

$$

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