482
FZUS51 KBOX 121203
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
703 AM EST Wed Nov 12 2025

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

ANZ200-130100-
703 AM EST Wed Nov 12 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres over the Maritimes with a series of weak fronts
moving across the waters will result in gusty westerly winds today
becoming NW Fri. High pres will build over the waters Sat then a
frontal system will cross the waters Sat night into Sun morning.
Gale force W-NW winds may develop later Sun into Mon as low pres
strengthens in the Maritimes.

$$

ANZ250-130100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.TODAY...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft, subsiding to 3 to 4 ft this afternoon. Wave Detail: SW 5 ft
at 5 seconds and SE 2 ft at 11 seconds, becoming SW 4 ft at
5 seconds and SE 2 ft at 11 seconds. A slight chance of showers.
.TONIGHT...W winds around 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 foot at
11 seconds.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 foot at
10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and SE 1 foot at
9 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and NE 2 ft at
8 seconds.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: N 3 ft at 5 seconds.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of rain.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Rain. Vsby 1 to 3 NM.
.SUN NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft. A chance of rain.

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.

$$

ANZ251-130100-
Massachusetts Bay and Ipswich Bay-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.TODAY...SW winds 15 to 20 kt, diminishing to 10 to 15 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 4 seconds and E 1 foot at 11 seconds.
.TONIGHT...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.
.THU...W winds around 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at
11 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and E 1 foot at
9 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 2 ft at 4 seconds and NE 1 foot at 8 seconds.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 2 ft at 6 seconds.
.SAT NIGHT...W winds 10 to 15 kt. Seas around 2 ft. A chance of
rain.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Rain.
.SUN NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
around 3 ft. A chance of rain.

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.

$$

ANZ231-130100-
Cape Cod Bay-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.TODAY...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at
10 seconds. A slight chance of showers.
.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at
10 seconds.
.THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at
10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. Wave Detail: NW 3 ft at 4 seconds and SE 1 foot at
10 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: NW 3 ft at 5 seconds and NE 1 foot at 9 seconds.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: N 3 ft at 6 seconds.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of rain.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain.
.SUN NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
around 3 ft. A chance of rain.

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.

$$

ANZ254-130100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...SW winds 15 to 20 kt, becoming W 20 to 25 kt this
afternoon. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SW
6 ft at 6 seconds and SE 2 ft at 11 seconds. A chance of showers.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 5 seconds and S 3 ft at 11 seconds.
.THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: W 4 ft at 4 seconds and S 2 ft at 10 seconds.
A chance of showers in the afternoon.
.THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: NW 5 ft at 5 seconds and S 1 foot at
9 seconds. A chance of showers.
.FRI AND FRI 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
11 seconds. A chance of showers.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: NW 4 ft at 5 seconds and NE 2 ft at
11 seconds.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of rain.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Rain.
.SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft. A chance of rain.

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.

$$

ANZ255-130100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...SW winds 25 to 30 kt, becoming W 20 to 25 kt this
afternoon. Seas 7 to 10 ft. Wave Detail: SW 10 ft at 9 seconds
and SE 1 foot at 11 seconds. A chance of showers.
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: SW 9 ft at 9 seconds and SE 1 foot at
11 seconds.
.THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: SW 7 ft at 9 seconds and SE 1 foot at
10 seconds. A chance of showers in the afternoon.
.THU NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 5 to 8 ft. Wave Detail: W 8 ft at 8 seconds
and SE 1 foot at 9 seconds.
.FRI...NW winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: W 6 ft at 7 seconds and E
1 foot at 9 seconds.
.FRI NIGHT...NW winds 20 to 25 kt. Seas 4 to 5 ft. Wave Detail:
NW 5 ft at 6 seconds and NE 1 foot at 9 seconds.
.SAT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.SAT NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft. A chance of
rain.
.SUN...SW winds 25 to 30 kt. Seas 4 to 6 ft. Rain.
.SUN NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
6 to 9 ft. A chance of rain.

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.

$$

ANZ256-130100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: SW 8 ft at 8 seconds and SE 1 foot at
11 seconds. A slight chance of showers this morning.
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft. Wave Detail: SW 8 ft at 9 seconds and SE 1 foot at
11 seconds.
.THU...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: W 7 ft at 8 seconds and SE 1 foot at
10 seconds.
.THU NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 8 ft. Wave Detail: NW 7 ft at 7 seconds and S 2 ft at
9 seconds.
.FRI...NW winds 20 to 25 kt. Seas 4 to 6 ft. Wave Detail: NW 6 ft
at 6 seconds and SE 1 foot at 9 seconds.
.FRI NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds
and E 1 foot at 4 seconds.
.SAT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.SAT NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. A chance of rain.
.SUN...SW winds 25 to 30 kt. Seas 4 to 6 ft. Rain.
.SUN NIGHT...W winds 30 to 40 kt. Seas 6 to 9 ft. A chance of
rain.

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.

$$

ANZ232-130100-
Nantucket Sound-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at
11 seconds. A chance of showers.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: W 4 ft at 5 seconds and S 1 foot at
11 seconds.
.THU...W 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 S 1 foot at
10 seconds.
.THU NIGHT...NW winds 20 to 25 kt. Seas 3 to 5 ft. Wave Detail: W
4 ft at 4 seconds and S 1 foot at 9 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and NE 1 foot
at 9 seconds.
.SAT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft
at 4 seconds and NE 1 foot at 8 seconds.
.SAT NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. A chance of
rain.
.SUN...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain.
.SUN NIGHT...W winds 25 to 35 kt. Seas 4 to 6 ft. A chance of
rain.

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.

$$

ANZ233-130100-
Vineyard Sound-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 8 seconds and SE 1 foot at
11 seconds. A slight chance of showers.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 8 seconds and SE 1 foot at
11 seconds.
.THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 8 seconds and SE 1 foot at
10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: W 4 ft at 7 seconds and S 1 foot at
9 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: W 3 ft at 6 seconds and SE 1 foot at 9 seconds.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: NW 2 ft at 4 seconds and NE 1 foot at
8 seconds.
.SAT NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. A chance of
rain.
.SUN...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain.
.SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ234-130100-
Buzzards Bay-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 8 seconds and SE 1 foot at
10 seconds. A slight chance of showers.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 4 ft at 8 seconds and SE 1 foot at
11 seconds.
.THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 4 ft at 8 seconds and SE 1 foot at
10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and S 1 foot at
9 seconds.
.FRI AND FRI NIGHT...NW winds around 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and SE
1 foot at 9 seconds.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: NW 2 ft at 3 seconds and NE 1 foot at
8 seconds.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of rain.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain.
.SUN NIGHT...W winds 25 to 30 kt. Seas 3 to 4 ft. A chance of
rain.

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.

$$

ANZ235-130100-
Rhode Island Sound-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: SW 7 ft at 8 seconds and SE 1 foot at
11 seconds. A slight chance of showers this morning.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 9 seconds and S 2 ft at 10 seconds.
.THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 9 seconds and S 2 ft at 10 seconds.
.THU NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds
and S 1 foot at 9 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: NW 4 ft at 5 seconds and SE 1 foot at 10 seconds.
.SAT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft
at 4 seconds and NE 1 foot at 9 seconds.
.SAT NIGHT...W winds 15 to 20 kt. Seas 2 to 3 ft. A chance of
rain.
.SUN...SW winds 20 to 25 kt. Seas 3 to 5 ft. Rain.
.SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft. A chance of rain.

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.

$$

ANZ237-130100-
Block Island Sound-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING...

.TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 6 seconds and S 2 ft at 10 seconds.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 6 seconds and S 4 ft at 10 seconds.
.THU...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: W 4 ft at 5 seconds and S 3 ft at 9 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and S 2 ft at
9 seconds.
.FRI AND FRI NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: W 3 ft at 4 seconds and S 1 foot at 9 seconds.
.SAT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: NW 2 ft at 3 seconds and NE 1 foot at
8 seconds.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of rain.
.SUN...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain.
.SUN NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. A chance of
rain.

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.

$$

ANZ230-130100-
Boston Harbor-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.THU...W winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.FRI AND FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.SAT...NW winds 10 to 15 kt. Waves around 2 ft.
.SAT NIGHT AND SUN...SW winds 5 to 10 kt, increasing to 10 to
15 kt with gusts up to 20 kt. Waves around 2 ft. Rain.
.SUN NIGHT...W winds 20 to 25 kt. Waves around 2 ft. A chance of
rain.

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.

$$

ANZ236-130100-
Narragansett Bay-
703 AM EST Wed Nov 12 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING...

.TODAY...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to
4 ft.
.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
4 ft.
.THU...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.FRI AND FRI NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.SAT...NW winds around 10 kt. Waves around 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. A chance of rain.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft. Rain.
.SUN NIGHT...W winds 20 to 25 kt. Waves 2 to 3 ft. A chance of
rain.

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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