268
FZUS51 KBOX 092004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 PM EDT Sun Mar 9 2025

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

ANZ200-100900-
404 PM EDT Sun Mar 9 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pressure over southeast Canada and high pressure over the Mid
Atlantic region Sunday, will provide dry weather with modest west
winds across the southern New England waters. High pressure then
builds over MA and RI Monday, lingering into Tuesday. A cold front
then sweeps across the waters Tuesday night, followed by high
pressure Wednesday into Thursday. Weak low pressure along a warm
front may impact the MA/RI waters late next week.

$$

ANZ250-100900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.TONIGHT...W winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft
at 4 seconds and E 1 foot at 11 seconds. A chance of flurries
after midnight.
.MON...W winds 15 to 20 kt, becoming N 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 4 seconds and E 1 foot at 10 seconds.
.MON NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with
gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail:
SE 2 ft at 3 seconds and W 1 foot at 4 seconds.
.TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 4 seconds and E 1 foot at 9 seconds.
.TUE NIGHT...S winds 15 to 20 kt, becoming W after midnight.
Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at
5 seconds and SE 1 foot at 9 seconds.
.WED AND WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: SE 4 ft at 9 seconds and NW 3 ft at
4 seconds.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas 3 to 5 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.

$$

ANZ251-100900-
Massachusetts Bay and Ipswich Bay-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.TONIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 2 ft at 3 seconds and N 1 foot at 5 seconds.
A chance of flurries after midnight.
.MON...W winds around 15 kt, becoming NW in the afternoon. Gusts
up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds
and E 1 foot at 11 seconds.
.MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: SE 1 foot at 3 seconds
and NW 1 foot at 3 seconds, becoming W 1 foot at 2 seconds and SE
1 foot at 3 seconds.
.TUE...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 4 seconds and E 1 foot at 10 seconds.
.TUE NIGHT...S winds 15 to 20 kt, becoming W after midnight.
Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at
4 seconds and SE 1 foot at 9 seconds.
.WED AND WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and SE 2 ft at
8 seconds.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 4 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.

$$

ANZ231-100900-
Cape Cod Bay-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

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

$$

ANZ254-100900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and N 1 foot at
3 seconds.
.MON...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
4 ft at 4 seconds and S 2 ft at 9 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W
2 ft at 5 seconds and S 2 ft at 8 seconds.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.TUE NIGHT...S winds 10 to 15 kt, becoming W after midnight.
Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at
7 seconds and SW 2 ft at 3 seconds.
.WED AND WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: N 4 ft at 5 seconds and SE 4 ft at
9 seconds.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ255-100900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 PM EDT Sun Mar 9 2025

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

.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming
SW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at
10 seconds.
.MON...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot at
10 seconds.
.MON NIGHT...SW winds 5 to 10 kt, becoming SE after midnight.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds.
.TUE...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S
2 ft at 5 seconds and SE 1 foot at 9 seconds.
.TUE NIGHT...S winds 10 to 15 kt, becoming W after midnight. Seas
2 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at
9 seconds.
.WED AND WED NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft. Wave
Detail: SE 5 ft at 10 seconds and NW 3 ft at 4 seconds.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ256-100900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 PM EDT Sun Mar 9 2025

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

.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at
10 seconds.
.MON...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 7 seconds and SE 1 foot at 10 seconds.
.MON NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 1 foot at
10 seconds.
.TUE...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and SE 1 foot at 9 seconds.
.TUE NIGHT...S winds 10 to 15 kt, becoming W with gusts up to
20 kt after midnight. Seas 2 to 4 ft. Wave Detail: S 4 ft at
10 seconds and S 3 ft at 5 seconds.
.WED AND WED NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft. Wave
Detail: SE 5 ft at 10 seconds and N 3 ft at 4 seconds.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ232-100900-
Nantucket Sound-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

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

$$

ANZ233-100900-
Vineyard Sound-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

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

$$

ANZ234-100900-
Buzzards Bay-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

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

$$

ANZ235-100900-
Rhode Island Sound-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.TONIGHT...SW winds 15 to 20 kt. Gusts up to 30 kt this evening.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 1 foot
at 10 seconds.
.MON...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
4 ft at 7 seconds and SE 1 foot at 10 seconds.
.MON NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and S 1 foot at
9 seconds.
.TUE...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 5 seconds and SE 1 foot at 9 seconds.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and S 3 ft at
10 seconds.
.WED AND WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: SE 4 ft at 10 seconds and N 2 ft at
3 seconds.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt. Seas 2 to 4 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.

$$

ANZ237-100900-
Block Island Sound-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

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

$$

ANZ230-100900-
Boston Harbor-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.TONIGHT...W winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Gusts up to 25 kt. Waves around 2 ft.
.MON...W winds 10 to 15 kt, becoming NW 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Waves around 2 ft in the morning,
then 1 foot or less.
.MON NIGHT...S winds around 5 kt. Waves 1 foot or less.
.TUE...S winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Gusts up to 20 kt. Waves around 2 ft.
.WED AND WED NIGHT...E winds 15 to 20 kt. Waves around 2 ft.
.THU THROUGH FRI NIGHT...S winds 10 to 15 kt. Waves 2 to 3 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.

$$

ANZ236-100900-
Narragansett Bay-
404 PM EDT Sun Mar 9 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.TONIGHT...W winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Gusts up to 25 kt. Waves 2 to 3 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to
5 to 10 kt in the afternoon. Waves around 2 ft.
.MON NIGHT...S winds around 5 kt. Waves around 2 ft.
.TUE...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 1 foot or less.
.TUE NIGHT...SW winds around 10 kt, becoming W after midnight.
Waves 2 to 3 ft.
.WED AND WED NIGHT...E winds 10 to 15 kt. Waves 2 to 3 ft.
.THU THROUGH FRI NIGHT...S winds 5 to 10 kt. Waves 2 to 4 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.

$$

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