Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 051527
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1027 AM EST Sun Dec 5 2021

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

ANZ200-060400-
1027 AM EST Sun Dec 5 2021

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure will be centered over the waters today. A warm front
will approach from the south late tonight and move across the waters
Monday morning. Gale force south to southwest winds Monday afternoon
and evening will shift to the northwest behind a cold front Monday
night. High pressure briefly builds in on Tuesday before another low
pressure impacts the region Wednesday.

For additional information on possible hazardous weather for the
week ahead, please visit www.weather.gov/boston/ehwo

$$

ANZ250-060400-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 10 to 15 kt. Gusts up to 20 kt. Seas
2 to 3 ft.
.TONIGHT...SE winds 10 to 15 kt with gusts up to 20 kt,
increasing to 15 to 20 kt with gusts up to 30 kt after midnight.
Seas 2 to 4 ft. A chance of showers.
.MON...S winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
8 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after
midnight. Gusts up to 40 kt. Seas 6 to 9 ft. Showers likely.
.TUE...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 4 to
7 ft.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming
N after midnight. Seas 2 to 4 ft.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely.
.WED NIGHT...NE winds 20 to 25 kt. Seas 6 to 9 ft. Showers likely
with a chance of snow showers. Vsby 1 to 3 NM.
.THU...N winds 20 to 25 kt. Seas 8 to 10 ft. A chance of snow
showers.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
6 to 9 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.

$$

ANZ251-060400-
Massachusetts Bay and Ipswich Bay-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 10 to 15 kt, becoming W 5 to 10 kt.
Seas around 2 ft.
.TONIGHT...SE winds 10 to 15 kt with gusts up to 20 kt,
increasing to 15 to 20 kt with gusts up to 30 kt after midnight.
Seas 2 to 4 ft. A chance of showers.
.MON...S winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 4 to 6 ft. Patchy fog. Showers
likely.
.MON NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 40 kt. Seas 4 to 7 ft. Showers likely.
.TUE...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely with a chance of snow showers.
.WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 7 ft. Showers likely with a chance of snow showers. Vsby
1 to 3 NM.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt,
becoming NE 5 to 10 kt. Seas 5 to 8 ft. A chance of snow 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.

$$

ANZ231-060400-
Cape Cod Bay-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt with
gusts up to 25 kt after midnight. Seas 2 to 3 ft. A chance of
showers.
.MON...S winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 3 to 5 ft. Showers likely.
.MON NIGHT...SW winds 20 to 25 kt, becoming W after midnight.
Gusts up to 40 kt. Seas 4 to 6 ft. A chance of showers.
.TUE...W winds 15 to 20 kt, becoming NW 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft.
.TUE NIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
1 foot or less.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Showers likely.
.WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Showers likely. Vsby 1 to 3 NM.
.THU...N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. A chance of snow showers.
.THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 7 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.

$$

ANZ254-060400-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt,
becoming N 5 to 10 kt. Seas 2 to 3 ft.
.TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming
SE 15 to 20 kt with gusts up to 30 kt after midnight. Seas 2 to
4 ft. A chance of showers.
.MON...S winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
8 ft. Patchy fog. Showers likely. Vsby 1 NM or less.
.MON NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after
midnight. Gusts up to 45 kt. Seas 7 to 10 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NW winds 20 to 25 kt with gusts up to 35 kt, diminishing
to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 5 to
8 ft.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming
N after midnight. Seas 3 to 5 ft.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely.
.WED NIGHT...NE winds 20 to 25 kt. Seas 5 to 8 ft. Showers
likely. Vsby 1 to 3 NM.
.THU...N winds 20 to 25 kt. Seas 8 to 10 ft. A chance of showers.
.THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
6 to 9 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.

$$

ANZ255-060400-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds around 10 kt, becoming N. Seas 2 to
3 ft.
.TONIGHT...E winds 10 to 15 kt, becoming SE 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers.
.MON...S winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
8 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.MON NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after
midnight. Gusts up to 40 kt. Seas 7 to 10 ft. A chance of
showers.
.TUE...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 5 to 8 ft.
.TUE NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 3 to 5 ft. A chance of showers.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 8 ft. Showers likely. Vsby 1 to 3 NM.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt,
becoming NE 10 to 15 kt. Seas 5 to 8 ft. A chance of showers.

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

$$

ANZ256-060400-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 5 to 10 kt, becoming NE. Seas 2 to
3 ft.
.TONIGHT...SE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.MON...S winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to
9 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.MON NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after
midnight. Gusts up to 45 kt. Seas 8 to 11 ft. A chance of
showers.
.TUE...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 5 to 8 ft.
.TUE NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas 3 to 5 ft. A chance of showers.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely. Vsby 1 to 3 NM.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 7 ft. Showers likely.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt,
becoming NE 10 to 15 kt. Seas 4 to 7 ft. A chance of showers.

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

$$

ANZ232-060400-
Nantucket Sound-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers.
.MON...S winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.MON NIGHT...SW winds around 25 kt, becoming W after midnight.
Gusts up to 45 kt. Seas 4 to 7 ft. Showers likely.
.TUE...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing
to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to
5 ft.
.TUE NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. A chance of showers.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Showers likely.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Showers likely. Vsby 1 to 3 NM.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt,
becoming NE 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ233-060400-
Vineyard Sound-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds around 10 kt, becoming N. Seas 1 foot
or less.
.TONIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers.
.MON...S winds 15 to 20 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 4 to 6 ft. Patchy fog. Showers
likely.
.MON NIGHT...SW winds around 25 kt, becoming W after midnight.
Gusts up to 40 kt. Seas 5 to 8 ft. A chance of showers.
.TUE...NW winds around 15 kt with gusts up to 30 kt, diminishing
to around 10 kt with gusts up to 20 kt in the afternoon. Seas
3 to 5 ft.
.TUE NIGHT...NW winds around 5 kt, becoming NE after midnight.
Seas 2 to 3 ft. A chance of showers.
.WED AND WED NIGHT...NE winds 10 to 15 kt, becoming N 15 to
20 kt. Seas 2 to 4 ft. Showers likely. Vsby 1 to 3 NM.
.THU...N winds 15 to 20 kt. Seas 3 to 4 ft. A chance of snow
showers.
.THU NIGHT...N winds 5 to 10 kt. Seas 2 to 3 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.

$$

ANZ234-060400-
Buzzards Bay-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 5 to 10 kt, becoming N. Seas 1 foot or
less.
.TONIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. A chance of showers.
.MON...S winds 15 to 20 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 3 to 5 ft. Patchy fog. Showers
likely.
.MON NIGHT...SW winds 20 to 25 kt, becoming W 15 to 20 kt after
midnight. Gusts up to 40 kt. Seas 4 to 6 ft. A chance of showers.
.TUE...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft.
.TUE NIGHT...N winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.WED...NE winds 5 to 10 kt. Seas around 2 ft. Showers likely.
.WED NIGHT...N winds 15 to 20 kt. Seas 2 to 3 ft. Showers likely
with a chance of snow showers. Vsby 1 to 3 NM.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Seas 2 to 4 ft. A chance of snow
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.

$$

ANZ235-060400-
Rhode Island Sound-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 5 to 10 kt, becoming NE. Seas around
2 ft.
.TONIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 3 to 5 ft. A chance of showers.
.MON...S winds 15 to 20 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 5 to 8 ft. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...SW winds 25 to 30 kt, becoming W 20 to 25 kt after
midnight. Gusts up to 40 kt. Seas 7 to 10 ft. A chance of
showers.
.TUE...NW winds 15 to 20 kt with gusts up to 30 kt, diminishing
to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
7 ft.
.TUE NIGHT...N winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 4 ft. A chance of showers.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Showers likely.
.THU...N winds 15 to 20 kt. Seas 4 to 5 ft. A chance of snow
showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 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.

$$

ANZ237-060400-
Block Island Sound-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 5 to 10 kt, becoming NE. Seas around
2 ft.
.TONIGHT...SE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers.
.MON...S winds 15 to 20 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 5 to 8 ft. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...SW winds 20 to 25 kt, becoming NW after midnight.
Gusts up to 40 kt. Seas 6 to 9 ft. Showers likely.
.TUE...NW winds 10 to 15 kt with gusts up to 30 kt, diminishing
to 5 to 10 kt with gusts up to 20 kt in the afternoon. Seas 4 to
7 ft.
.TUE NIGHT...N winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 3 ft. A chance of showers.
.WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Showers likely with a chance of snow showers.
.THU...N winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow
showers.
.THU NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
rain and snow showers.

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

$$

ANZ230-060400-
Boston Harbor-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...W winds 5 to 10 kt. Waves 1 foot or less.
.TONIGHT...SE winds 10 to 15 kt. Gusts up to 25 kt after
midnight. Waves around 2 ft. A chance of showers.
.MON...S winds 15 to 20 kt with gusts up to 30 kt. Waves around
2 ft. Patchy fog. Showers likely.
.MON NIGHT...SW winds 15 to 20 kt, becoming W after midnight.
Gusts up to 35 kt. Waves around 2 ft, except 3 to 5 ft at the
outer harbor entrance. Showers likely.
.TUE...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Waves around 2 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.WED...NE winds 5 to 10 kt. Waves around 2 ft. Snow and rain
showers likely.
.WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. Showers likely with a chance of snow showers.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Waves around 2 ft, then 1 foot or
less. At the outer harbor entrance, waves 3 to 5 ft. A chance of
snow 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.

$$

ANZ236-060400-
Narragansett Bay-
1027 AM EST Sun Dec 5 2021

...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
MORNING...

.THIS AFTERNOON...NW winds 5 to 10 kt, becoming N. Waves 1 foot
or less.
.TONIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 4 ft. A chance of showers.
.MON...S winds 15 to 20 kt with gusts up to 35 kt. Waves 4 to
7 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...SW winds 20 to 25 kt with gusts up to 40 kt,
becoming W 15 to 20 kt with gusts up to 30 kt after midnight.
Waves 4 to 7 ft. Showers likely.
.TUE...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Waves around 3 ft, except 4 to 6 ft
at the bay entrance.
.TUE NIGHT...N winds around 5 kt. Waves 2 to 3 ft.
.WED...NE winds 5 to 10 kt. Waves 2 to 3 ft. Rain and snow
showers likely.
.WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves
around 3 ft. Showers likely with a chance of snow showers.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Waves around 3 ft. A chance of snow
showers.

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

$$

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