913
FZUS51 KBOX 180303
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1003 PM EST Mon Nov 17 2025

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

ANZ200-181600-
1003 PM 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 bringing light winds.
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. Rain showers possible.

$$

ANZ250-181600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1003 PM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.OVERNIGHT...W winds around 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: NW 6 ft at 5 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 6 ft
at 5 seconds and SE 1 foot at 12 seconds.
.TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds
and SE 1 foot at 11 seconds.
.WED...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.
.WED NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave
Detail: NW 1 foot at 3 seconds and E 1 foot at 10 seconds.
.THU AND THU NIGHT...S winds around 5 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 2 seconds and E 1 foot at 10 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 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.

$$

ANZ251-181600-
Massachusetts Bay and Ipswich Bay-
1003 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST TUESDAY...

.OVERNIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and NE 1 foot at
12 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas around
3 ft. Wave Detail: W 3 ft at 4 seconds and NE 1 foot at
11 seconds.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at
11 seconds.
.WED...NW winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot
at 10 seconds, becoming NW 1 foot at 2 seconds and NE 1 foot at
9 seconds.
.WED NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave
Detail: NW 1 foot at 2 seconds and NE 1 foot at 8 seconds.
.THU AND THU NIGHT...SW winds around 5 kt. Seas 1 foot or less.
Wave Detail: NW 1 foot at 2 seconds and NE 1 foot at 8 seconds.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Rain likely.
.FRI NIGHT AND SAT...W winds 15 to 20 kt, becoming NW 10 to
15 kt. Seas 2 to 3 ft. A chance of rain.
.SAT NIGHT...NW winds 10 to 15 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.

$$

ANZ231-181600-
Cape Cod Bay-
1003 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST TUESDAY...

.OVERNIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 5 seconds and E 1 foot at 12 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: NW 4 ft at 5 seconds and NE 1 foot at
11 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 E
1 foot at 11 seconds.
.WED...NW winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: NW 1 foot at 4 seconds and NE 1 foot
at 11 seconds.
.WED NIGHT...N winds around 5 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 4 seconds and NE 1 foot at 10 seconds.
.THU AND THU NIGHT...S winds around 5 kt. Seas 1 foot or less.
Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 7 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 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.

$$

ANZ254-181600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1003 PM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.OVERNIGHT...W 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 SE 1 foot at
12 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 4 to 6 ft. Wave Detail: NW 6 ft at 7 seconds and
SE 1 foot at 11 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 SE
1 foot at 10 seconds.
.WED...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 6 seconds and E 1 foot at 11 seconds.
.WED NIGHT AND THU...NE winds around 5 kt. Seas around 2 ft. Wave
Detail: NW 2 ft at 5 seconds and E 1 foot at 11 seconds.
.THU NIGHT...NE winds around 5 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: NE 1 foot at 6 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 THROUGH SAT NIGHT...NW 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.

$$

ANZ255-181600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1003 PM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.OVERNIGHT...NW winds 25 to 30 kt, becoming W 20 to 25 kt. Seas
7 to 10 ft. Wave Detail: W 8 ft at 8 seconds and E 1 foot at
13 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 8 ft. Wave Detail: W 6 ft at 7 seconds and E
1 foot at 14 seconds.
.TUE NIGHT...NW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: W 4 ft at 6 seconds and E
1 foot at 12 seconds.
.WED...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 6 seconds and E 1 foot at 12 seconds.
.WED NIGHT AND THU...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 5 seconds and NE 1 foot at 12 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and NE 1 foot at 5 seconds.
.FRI...S winds 15 to 20 kt. Seas 2 to 4 ft. A chance of rain.
.FRI NIGHT AND SAT...W winds 20 to 25 kt, becoming NW 15 to
20 kt. Seas 4 to 6 ft. A chance of rain.
.SAT NIGHT...NW winds 15 to 20 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.

$$

ANZ256-181600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1003 PM EST Mon Nov 17 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST TUESDAY...

.OVERNIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt.
Seas 6 to 9 ft. Wave Detail: NW 7 ft at 7 seconds and S 1 foot at
11 seconds.
.TUE...W winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 6 seconds and
S 1 foot at 13 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 SE 1 foot at 12 seconds.
.WED...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft
at 5 seconds and E 1 foot at 11 seconds.
.WED NIGHT AND THU...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 5 seconds and NE 1 foot at 11 seconds.
.THU NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
around 2 ft. Wave Detail: E 1 foot at 4 seconds and S 1 foot at
6 seconds.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of rain.
.FRI NIGHT AND SAT...W winds 20 to 25 kt, becoming NW 15 to
20 kt. Seas 4 to 6 ft. A chance of rain.
.SAT NIGHT...NW winds 15 to 20 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.

$$

ANZ232-181600-
Nantucket Sound-
1003 PM EST Mon Nov 17 2025

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

.OVERNIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: W 4 ft at 5 seconds and S 1 foot at
11 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at
10 seconds.
.TUE NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: W 2 ft at 4 seconds and NE 1 foot at 11 seconds.
.WED...NW winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: W 1 foot at 4 seconds and NE 1 foot
at 12 seconds, becoming NW 1 foot at 4 seconds and NE 1 foot at
13 seconds.
.WED NIGHT AND THU...NE winds 5 to 10 kt. Seas 1 foot or less.
Wave Detail: W 1 foot at 4 seconds and NE 1 foot at 12 seconds.
.THU NIGHT...NE winds around 5 kt, becoming SE after midnight.
Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and S
1 foot at 6 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 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.

$$

ANZ233-181600-
Vineyard Sound-
1003 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST TUESDAY...

.OVERNIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: W 4 ft at 7 seconds and S 1 foot at
11 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 5 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 2 ft at 5 seconds and SE 1 foot at 10 seconds.
.WED...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: SW
1 foot at 6 seconds and E 1 foot at 10 seconds.
.WED NIGHT AND THU...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 5 seconds and NE 1 foot at 10 seconds.
.THU NIGHT...NE winds around 5 kt, becoming SE after midnight.
Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and SW
1 foot at 6 seconds.
.FRI THROUGH SAT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A chance of rain.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 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.

$$

ANZ234-181600-
Buzzards Bay-
1003 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST TUESDAY...

.OVERNIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: W 3 ft at 6 seconds.
.TUE...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas around 3 ft. Wave Detail: W
3 ft at 5 seconds.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 5 seconds and SE 1 foot at 10 seconds.
.WED...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: SW
1 foot at 6 seconds and E 1 foot at 10 seconds.
.WED NIGHT AND THU...NE winds around 5 kt. Seas 1 foot or less.
Wave Detail: SW 1 foot at 5 seconds and NE 1 foot at 10 seconds.
.THU NIGHT...E winds around 5 kt, becoming SE after midnight.
Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and SW
1 foot at 5 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt. Seas 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.

$$

ANZ235-181600-
Rhode Island Sound-
1003 PM EST Mon Nov 17 2025

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

.OVERNIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: W 5 ft at 7 seconds and S 1 foot at
11 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 S
1 foot at 10 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...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft
at 6 seconds and E 1 foot at 9 seconds.
.WED NIGHT AND THU...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and NE 1 foot at 8 seconds.
.THU NIGHT...E winds around 5 kt, becoming S after midnight. Seas
around 2 ft. Wave Detail: NE 1 foot at 4 seconds and S 1 foot at
6 seconds.
.FRI...SW winds 15 to 20 kt. Seas 2 to 3 ft. A chance of rain.
.FRI NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of rain.
.SAT AND SAT NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 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.

$$

ANZ237-181600-
Block Island Sound-
1003 PM EST Mon Nov 17 2025

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

.OVERNIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and S 1 foot at
11 seconds.
.TUE...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: W 3 ft at 4 seconds and S 1 foot at
10 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 10 seconds.
.WED...N winds around 5 kt. Seas around 2 ft. Wave Detail: W
1 foot at 5 seconds and SE 1 foot at 9 seconds.
.WED NIGHT AND THU...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 6 seconds and NE 1 foot at 7 seconds.
.THU NIGHT...E winds around 5 kt, becoming S after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: E
1 foot at 5 seconds and S 1 foot at 6 seconds, becoming SE 1 foot
at 7 seconds.
.FRI THROUGH SAT NIGHT...NW winds 15 to 20 kt with gusts up to
25 kt. Seas 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.

$$

ANZ230-181600-
Boston Harbor-
1003 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...

.OVERNIGHT...W winds 15 to 20 kt with gusts up to 25 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 with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves around 2 ft.
.WED...NW winds 5 to 10 kt. Waves 1 foot or less.
.WED NIGHT...NW winds around 5 kt. Waves 1 foot or less.
.THU AND THU NIGHT...SW winds around 5 kt. Waves 1 foot or less.
.FRI...S winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Rain likely.
.FRI NIGHT AND SAT...W winds 15 to 20 kt, becoming NW 10 to
15 kt. Waves around 2 ft. A chance of rain.
.SAT NIGHT...NW winds 10 to 15 kt. Waves 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.

$$

ANZ236-181600-
Narragansett Bay-
1003 PM EST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...

.OVERNIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt.
Gusts up to 30 kt. Waves around 3 ft.
.TUE...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.TUE NIGHT...NW winds 5 to 10 kt. Waves around 2 ft.
.WED...NW winds around 5 kt. Waves 1 foot or less.
.WED NIGHT AND THU...NE winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...E winds around 5 kt, becoming S around 5 kt after
midnight. Waves 1 foot or less.
.FRI THROUGH SAT NIGHT...NW winds 10 to 15 kt with gusts up to
20 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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