737
FZUS51 KBOX 162104
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 PM EST Sun Nov 16 2025

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

ANZ200-171000-
404 PM EST Sun Nov 16 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Gale force westerly winds behind strong low pressure tonight into
Mon as a gale center strengthens in the Maritimes. Gusty winds will
linger into Tue, then high pres moves into the waters Wed then
offshore Thu as a weak frontal boundary sets up to the S. A frontal
system will approach from the west Fri. Frontal boundary moves over
the coastal waters by Saturday.

$$

ANZ250-171000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT...

.TONIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
8 ft. Wave Detail: W 7 ft at 5 seconds and SE 1 foot at
7 seconds. A slight chance of rain this evening.
.MON...W winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
8 ft. Wave Detail: W 7 ft at 6 seconds and E 1 foot at
13 seconds.
.MON NIGHT...W winds 20 to 25 kt with gusts up to 30 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 E 1 foot at 13 seconds.
.TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W
4 ft at 5 seconds and E 1 foot at 12 seconds.
.WED AND WED NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 2 ft at 5 seconds.
.THU...SE winds around 5 kt. Seas 1 foot or less.
.THU NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. A chance
of rain.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Rain likely.
.FRI NIGHT...SW 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.

$$

ANZ251-171000-
Massachusetts Bay and Ipswich Bay-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.TONIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 4 seconds and E 1 foot at 6 seconds.
.MON...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 5 seconds.
.MON NIGHT...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.
.TUE...W 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 E 1 foot at
13 seconds.
.TUE NIGHT THROUGH WED NIGHT...NW winds 10 to 15 kt with gusts up
to 20 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds.
.THU...NE winds around 5 kt. Seas 1 foot or less. Wave Detail: N
1 foot at 3 seconds.
.THU NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
rain.
.FRI AND FRI NIGHT...S winds 10 to 15 kt, becoming SW 15 to
20 kt. Gusts up to 25 kt. Seas 2 to 3 ft. Rain likely. Vsby 1 to
3 NM.

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.

$$

ANZ231-171000-
Cape Cod Bay-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.TONIGHT...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 S 1 foot at 8 seconds.
.MON...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and E
1 foot at 13 seconds.
.MON NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and E 1 foot at
14 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: W 4 ft at 5 seconds and E 1 foot at
14 seconds.
.TUE NIGHT THROUGH WED NIGHT...NW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and E
1 foot at 13 seconds.
.THU...E winds around 5 kt. Seas 1 foot or less. Wave Detail: N
1 foot at 3 seconds and E 1 foot at 12 seconds.
.THU NIGHT...E winds around 5 kt. Seas 1 foot or less. A chance
of rain.
.FRI AND FRI NIGHT...S winds 10 to 15 kt, becoming SW 15 to
20 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. Vsby 1 to
3 NM.

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.

$$

ANZ254-171000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT...

.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 7 to
10 ft, except 11 to 15 ft S and E of Nantucket. Wave Detail: W
8 ft at 6 seconds and S 2 ft at 9 seconds.
.MON...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
10 ft, except 10 to 14 ft S and E of Nantucket. Wave Detail: W
8 ft at 7 seconds and SE 1 foot at 13 seconds.
.MON NIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 5 to 8 ft. Wave Detail: NW 7 ft at 7 seconds
and SE 1 foot at 13 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and
SE 1 foot at 9 seconds.
.TUE NIGHT AND WED...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: NW 4 ft at 6 seconds and SE 1 foot at 8 seconds.
.WED NIGHT...NW winds around 5 kt. Seas around 2 ft. Wave Detail:
NW 1 foot at 4 seconds and S 1 foot at 6 seconds.
.THU AND THU NIGHT...E winds 5 to 10 kt. Seas 1 foot or less.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of rain.
.FRI NIGHT...SW winds 20 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.

$$

ANZ255-171000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT...

.TONIGHT...W winds 30 to 40 kt. Seas 10 to 14 ft. Wave Detail: W
13 ft at 9 seconds and S 1 foot at 9 seconds.
.MON...W winds 30 to 40 kt. Seas 10 to 14 ft, subsiding to 9 to
12 ft in the afternoon. Wave Detail: W 13 ft at 9 seconds and E
1 foot at 14 seconds, becoming W 11 ft at 9 seconds and E 1 foot
at 14 seconds.
.MON NIGHT...W winds 25 to 35 kt. Seas 7 to 10 ft. Wave Detail: W
10 ft at 8 seconds and E 1 foot at 14 seconds.
.TUE...W winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 5 to 8 ft. Wave Detail: W 8 ft at 7 seconds and E
1 foot at 14 seconds.
.TUE NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds
and E 1 foot at 13 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 1 foot or less,
then around 2 ft.
.FRI...S winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain.
.FRI NIGHT...SW winds 25 to 30 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.

$$

ANZ256-171000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT...

.TONIGHT...W winds 30 to 35 kt with gusts up to 40 kt. Seas 9 to
12 ft. Wave Detail: W 11 ft at 8 seconds and S 1 foot at
9 seconds.
.MON...W winds 30 to 35 kt, diminishing to 25 to 30 kt in the
afternoon. Seas 9 to 12 ft. Wave Detail: W 11 ft at 8 seconds and
S 1 foot at 8 seconds.
.MON NIGHT...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 SE 1 foot at
12 seconds.
.TUE...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: NW 7 ft at 6 seconds and E 1 foot at
14 seconds.
.TUE NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 2 to 4 ft. Wave Detail: NW 4 ft at
5 seconds.
.WED AND WED NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 2 ft at 5 seconds.
.THU...E winds 5 to 10 kt. Seas 1 foot or less.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
rain.
.FRI...S winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of rain.
.FRI NIGHT...SW winds 25 to 30 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.

$$

ANZ232-171000-
Nantucket Sound-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.TONIGHT...W winds 30 to 35 kt with gusts up to 40 kt. Seas 5 to
7 ft. Wave Detail: W 6 ft at 5 seconds and S 1 foot at 9 seconds.
.MON...W winds 25 to 35 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft
at 6 seconds and SE 1 foot at 13 seconds.
.MON NIGHT...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 SE 1 foot at 14 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and E
1 foot at 14 seconds.
.TUE NIGHT AND WED...W winds 15 to 20 kt. Seas 2 to 3 ft. Wave
Detail: W 3 ft at 4 seconds and E 1 foot at 14 seconds.
.WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 3 seconds and W 1 foot at 4 seconds.
.THU AND THU NIGHT...E winds 5 to 10 kt. Seas 1 foot or less.
.FRI...S winds 15 to 20 kt. Seas 2 to 3 ft. A chance of rain.
.FRI NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 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.

$$

ANZ233-171000-
Vineyard Sound-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

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

$$

ANZ234-171000-
Buzzards Bay-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.TONIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft. Wave Detail: W 6 ft at 8 seconds and S 1 foot at 9 seconds.
.MON...W winds 25 to 30 kt with gusts up to 35 kt. Seas 3 to
5 ft. Wave Detail: W 5 ft at 7 seconds and SE 1 foot at
13 seconds.
.MON NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: W 4 ft at 7 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 6 seconds and E 1 foot at
14 seconds.
.TUE NIGHT AND WED...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and E 1 foot
at 14 seconds.
.WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 3 seconds and SW 1 foot at 5 seconds.
.THU...NE winds around 5 kt. Seas 1 foot or less.
.THU NIGHT AND FRI...E winds around 5 kt, becoming S 15 to 20 kt.
Seas 1 foot or less, then 2 to 3 ft. A chance of rain.
.FRI NIGHT...SW winds 20 to 25 kt. Seas 3 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.

$$

ANZ235-171000-
Rhode Island Sound-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

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

$$

ANZ237-171000-
Block Island Sound-
404 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

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

$$

ANZ230-171000-
Boston Harbor-
404 PM EST Sun Nov 16 2025

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

.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Waves
around 2 ft.
.MON...W winds 20 to 25 kt with gusts up to 30 kt. Waves around
2 ft.
.MON NIGHT...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 THROUGH WED NIGHT...NW winds 10 to 15 kt. Waves around
2 ft.
.THU...NE winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...SW winds around 5 kt. Waves 1 foot or less. A chance
of rain.
.FRI AND FRI NIGHT...S winds 10 to 15 kt, becoming SW 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.

$$

ANZ236-171000-
Narragansett Bay-
404 PM EST Sun Nov 16 2025

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

.TONIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Waves 3 to
4 ft, except 4 to 6 ft at the bay entrance.
.MON...W winds 20 to 25 kt with gusts up to 30 kt. Waves around
3 ft, except 4 to 6 ft at the bay entrance.
.MON NIGHT...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 AND WED...W winds 5 to 10 kt. Waves around 2 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 foot or less.
.THU...NE winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...E winds around 5 kt. Waves 1 foot or less. A chance
of rain.
.FRI AND FRI NIGHT...S winds 10 to 15 kt, becoming SW 15 to
20 kt. Gusts up to 25 kt. Waves 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.

$$

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