775
FZUS51 KBOX 171205
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 AM EST Mon Nov 17 2025

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

ANZ200-180100-
704 AM EST Mon Nov 17 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Gale force westerly winds will continue today as a gale center
strengthens in the Maritimes. Gusty winds will linger into Tue, then
high pres moves into the waters Wed and Thu. Low pres will track
well S of the waters Wed and Wed night. A cold front approaches
from the Gt Lakes Fri and moves S of the waters Fri night into Sat.

$$

ANZ250-180100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
7 ft. Wave Detail: W 7 ft at 6 seconds and SW 1 foot at
9 seconds.
.TONIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
7 ft. Wave Detail: W 7 ft at 6 seconds and E 1 foot at
13 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft
at 5 seconds and SE 1 foot at 10 seconds.
.TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE
1 foot at 9 seconds.
.WED...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft
at 4 seconds and S 1 foot at 9 seconds.
.WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave
Detail: NW 1 foot at 3 seconds.
.THU AND THU NIGHT...E winds around 5 kt. Seas 1 foot or less.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Rain likely.
.FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Rain likely.

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.

$$

ANZ251-180100-
Massachusetts Bay and Ipswich Bay-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 30 kt, diminishing to 20 to 25 kt this
afternoon. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and
SW 2 ft at 9 seconds.
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: NW 4 ft at 5 seconds and SW 2 ft at 9 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: NW 3 ft at 5 seconds and S 1 foot at
8 seconds.
.TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and
SE 1 foot at 9 seconds.
.WED AND WED NIGHT...N winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: NW 1 foot at 4 seconds.
.THU AND THU NIGHT...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: N 1 foot at 2 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Rain likely.
.FRI NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft. Rain likely.

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.

$$

ANZ231-180100-
Cape Cod Bay-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 30 kt, diminishing to 20 to 25 kt this
afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and
SW 3 ft at 9 seconds.
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: NW 4 ft at 6 seconds and SW 2 ft at
10 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NW 4 ft at 6 seconds and SW 1 foot at
9 seconds.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: NW 2 ft at 4 seconds and S 1 foot at 9 seconds.
.WED AND WED NIGHT...N winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: N 1 foot at 5 seconds and S 1 foot at 8 seconds.
.THU AND THU NIGHT...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: N 1 foot at 3 seconds and S 1 foot at 7 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. A chance of rain.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft. Rain likely.

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.

$$

ANZ254-180100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to
10 ft, except 10 to 14 ft S and E of Nantucket. Wave Detail: W
7 ft at 6 seconds and SW 3 ft at 10 seconds.
.TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Seas 5 to 8 ft. Wave Detail: NW 6 ft at 6 seconds and
SW 2 ft at 10 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: NW
6 ft at 6 seconds and S 1 foot at 9 seconds.
.TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and S
1 foot at 9 seconds.
.WED...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 5 seconds and S 1 foot at 8 seconds.
.WED NIGHT...N winds around 5 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: NW 1 foot at 4 seconds
and S 1 foot at 7 seconds.
.THU AND THU NIGHT...NE winds around 5 kt. Seas 2 to 3 ft.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of rain.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Rain likely.

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.

$$

ANZ255-180100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 30 to 40 kt. Seas 9 to 13 ft. Wave Detail: W
12 ft at 9 seconds and E 1 foot at 14 seconds.
.TONIGHT...W winds 30 to 35 kt, diminishing to 25 to 30 kt after
midnight. Seas 7 to 10 ft. Wave Detail: W 10 ft at 9 seconds and
E 1 foot at 14 seconds.
.TUE...W winds 25 to 30 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 8 ft. Wave Detail: W 8 ft at 7 seconds and
SW 1 foot at 9 seconds.
.TUE NIGHT...NW winds 15 to 20 kt, diminishing to around 10 kt
after midnight. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds
and S 1 foot at 8 seconds.
.WED AND WED NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: W 2 ft at 6 seconds.
.THU AND THU NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 5 seconds and SW 2 ft at 7 seconds.
.FRI...S winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain.
.FRI NIGHT...W winds 20 to 25 kt. Seas 5 to 8 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.

$$

ANZ256-180100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT THROUGH LATE TONIGHT...

.TODAY...W winds 30 to 35 kt, diminishing to 25 to 30 kt this
afternoon. Seas 8 to 11 ft. Wave Detail: W 10 ft at 7 seconds and
SW 7 ft at 9 seconds.
.TONIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to
9 ft. Wave Detail: NW 9 ft at 7 seconds and SW 5 ft at 9 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft
at 7 seconds and E 1 foot at 14 seconds.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave
Detail: W 4 ft at 6 seconds and S 1 foot at 8 seconds.
.WED AND WED NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 2 ft at 5 seconds and SW 2 ft at 6 seconds.
.THU AND THU NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and NE 1 foot at 2 seconds.
.FRI...S winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain.
.FRI NIGHT...W winds 20 to 25 kt. Seas 5 to 7 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.

$$

ANZ232-180100-
Nantucket Sound-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 35 kt with gusts up to 40 kt. Seas 5 to
7 ft. Wave Detail: W 6 ft at 5 seconds and SW 3 ft at 10 seconds.
.TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 6 seconds and
SW 2 ft at 9 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft
at 4 seconds and N 1 foot at 6 seconds.
.TUE NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 5 seconds and SW
1 foot at 8 seconds.
.WED AND WED NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 4 seconds and S 1 foot at 7 seconds.
.THU AND THU NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less,
then around 2 ft. Wave Detail: NE 1 foot at 2 seconds and S
1 foot at 6 seconds, becoming N 1 foot at 3 seconds and S 1 foot
at 6 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of rain.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ233-180100-
Vineyard Sound-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
7 ft. Wave Detail: SW 6 ft at 9 seconds and W 5 ft at 6 seconds.
.TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and SW
4 ft at 9 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and
SW 1 foot at 9 seconds.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: W 3 ft at 5 seconds and S 1 foot at 9 seconds.
.WED AND WED NIGHT...N winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 7 seconds.
.THU AND THU NIGHT...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: NE 1 foot at 2 seconds and SW 1 foot at 5 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of rain.
.FRI NIGHT...W winds 15 to 20 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.

$$

ANZ234-180100-
Buzzards Bay-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to
5 ft. Wave Detail: W 5 ft at 5 seconds and SW 5 ft at 9 seconds.
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 5 seconds and SW 4 ft at 9 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 5 seconds and SW 1 foot at
8 seconds.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: W
2 ft at 5 seconds and S 1 foot at 9 seconds.
.WED AND WED NIGHT...N winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 7 seconds.
.THU AND THU NIGHT...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: NE 1 foot at 2 seconds and SW 1 foot at 5 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of rain.
.FRI NIGHT...W winds 15 to 20 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.

$$

ANZ235-180100-
Rhode Island Sound-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
8 ft. Wave Detail: SW 7 ft at 9 seconds and W 6 ft at 6 seconds.
.TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Seas 5 to 7 ft. Wave Detail: W 6 ft at 7 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft
at 5 seconds and SW 2 ft at 8 seconds.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: W 3 ft at 6 seconds and S 1 foot at 9 seconds.
.WED AND WED NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 5 seconds and N 1 foot at 2 seconds.
.THU AND THU NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less,
then around 2 ft. Wave Detail: NE 1 foot at 2 seconds and S
1 foot at 6 seconds, becoming S 2 ft at 6 seconds and NE 1 foot
at 2 seconds.
.FRI...S winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain.
.FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ237-180100-
Block Island Sound-
704 AM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...

.TODAY...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
7 ft. Wave Detail: W 5 ft at 5 seconds and SW 3 ft at 9 seconds.
.TONIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 5 seconds and SW 2 ft at 9 seconds.
.TUE...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 SW 2 ft at 8 seconds.
.TUE NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds
and S 1 foot at 8 seconds.
.WED AND WED NIGHT...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: NW 1 foot at 2 seconds and S 1 foot at 7 seconds.
.THU AND THU NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less,
then around 2 ft. Wave Detail: NE 1 foot at 2 seconds and S
1 foot at 6 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of rain.
.FRI NIGHT...W winds 15 to 20 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.

$$

ANZ230-180100-
Boston Harbor-
704 AM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Waves around
2 ft.
.TONIGHT...W winds 20 to 25 kt, diminishing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Waves around 2 ft.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Waves around
2 ft.
.TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Waves around 2 ft in the evening, then 1 foot or less.
.WED AND WED NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.THU AND THU NIGHT...N winds around 5 kt. Waves 1 foot or less.
.FRI AND FRI NIGHT...S winds 10 to 15 kt, becoming W 15 to 20 kt.
Waves around 2 ft. Rain likely.

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.

$$

ANZ236-180100-
Narragansett Bay-
704 AM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.TODAY...W winds 20 to 25 kt with gusts up to 30 kt. Waves around
3 ft.
.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to
3 ft.
.TUE...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.WED AND WED NIGHT...N winds around 5 kt. Waves 1 foot or less.
.THU AND THU NIGHT...NE winds around 5 kt. Waves 1 foot or less.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Rain likely.
.FRI NIGHT...W winds around 15 kt with gusts up to 20 kt. Waves
2 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.

$$

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