788
FZUS51 KBOX 241705
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
105 PM EDT Sat May 24 2025

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

ANZ200-250600-
105 PM EDT Sat May 24 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pressure over the maritimes will slowly weaken this weekend,
then finally move into the north Atlantic Monday. Then strong high
Canadian pressure builds into the Great Lakes and New England
Tuesday, then sliding south of New England Wednesday. A slow moving
cold front will approach New England late next week.

$$

ANZ250-250600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: E 4 ft at 9 seconds and SW 1 foot at 5 seconds. A slight
chance of showers.
.TONIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 9 seconds and W 2 ft at 3 seconds.
.SUN...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and NW 2 ft at
4 seconds.
.SUN NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 9 seconds and NW 1 foot at 3 seconds.
.MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 8 seconds and NW 1 foot at
3 seconds.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds
and N 1 foot at 3 seconds, becoming NE 1 foot at 3 seconds and SW
1 foot at 3 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 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.

$$

ANZ251-250600-
Massachusetts Bay and Ipswich Bay-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 9 seconds and SW 1 foot at 5 seconds. A slight
chance of showers.
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SW 1 foot at 6 seconds.
.SUN...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and
NW 2 ft at 3 seconds.
.SUN NIGHT...NW winds around 5 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 9 seconds and N 1 foot at 3 seconds.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: E
2 ft at 8 seconds and N 1 foot at 3 seconds, becoming N 1 foot at
2 seconds and SW 1 foot at 4 seconds.
.MON NIGHT...S winds around 5 kt, becoming W after midnight. Seas
1 foot or less. Wave Detail: NE 1 foot at 2 seconds and NW 1 foot
at 2 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 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.

$$

ANZ231-250600-
Cape Cod Bay-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: E 2 ft at 9 seconds and SW 1 foot at 3 seconds. A slight
chance of showers.
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 9 seconds and W 1 foot at 3 seconds.
.SUN...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 9 seconds and N 1 foot at 4 seconds.
.SUN NIGHT...SW winds around 5 kt, becoming NW around 5 kt after
midnight. Seas around 2 ft in the evening, then 1 foot or less.
Wave Detail: N 1 foot at 4 seconds and SW 1 foot at 5 seconds.
.MON...N winds around 5 kt, becoming NE in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 3 seconds and SW 1 foot
at 5 seconds.
.MON NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 3 seconds and SW 1 foot at 4 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or
less.

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.

$$

ANZ254-250600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
105 PM EDT Sat May 24 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. Wave Detail: E 4 ft at 9 seconds and SW 3 ft at
7 seconds. A slight chance of showers.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 3 to 5 ft. Wave Detail: SW 3 ft at 7 seconds and E 3 ft at
9 seconds.
.SUN...W winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
2 to 4 ft. Wave Detail: E 3 ft at 9 seconds and NW 2 ft at
3 seconds.
.SUN NIGHT...W winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 9 seconds and N 1 foot at 4 seconds.
.MON...N winds around 5 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and N 1 foot at 4 seconds.
.MON NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail:
N 1 foot at 3 seconds and S 1 foot at 5 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 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.

$$

ANZ255-250600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
105 PM EDT Sat May 24 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt.
Seas 4 to 6 ft. Wave Detail: SW 4 ft at 6 seconds and NE 3 ft at
7 seconds.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and E 3 ft at
9 seconds.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and E 2 ft at
8 seconds.
.SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 6 seconds and E 2 ft at 9 seconds.
.MON...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at
4 seconds.
.MON NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail:
N 1 foot at 3 seconds and SW 1 foot at 5 seconds.
.TUE THROUGH WED NIGHT...S winds 5 to 10 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.

$$

ANZ256-250600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
105 PM EDT Sat May 24 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft. Wave Detail: W 4 ft at 5 seconds and E 3 ft at
9 seconds.
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: W 4 ft at 5 seconds and E 2 ft at 8 seconds.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 2 ft at
8 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 4 seconds and E 1 foot at 9 seconds.
.MON AND MON NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 5 seconds and NW 1 foot at 2 seconds.
.TUE THROUGH WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds.
.WED NIGHT...S winds around 10 kt. Seas around 2 ft. A chance of
showers.

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.

$$

ANZ232-250600-
Nantucket Sound-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and E 2 ft at
9 seconds. A slight chance of showers.
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
2 ft at 5 seconds and N 1 foot at 5 seconds.
.SUN...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds
and SW 1 foot at 6 seconds.
.SUN NIGHT...W winds around 5 kt. Seas around 2 ft. Wave Detail:
NW 1 foot at 3 seconds and SW 1 foot at 6 seconds.
.MON...N winds 5 to 10 kt, becoming NE in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 3 seconds and SW 1 foot
at 5 seconds.
.MON NIGHT...W winds around 5 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 3 seconds and SW 1 foot at 5 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or
less.

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.

$$

ANZ233-250600-
Vineyard Sound-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at
8 seconds. A slight chance of showers.
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 5 seconds and E 1 foot at 8 seconds.
.SUN...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft
at 5 seconds and E 1 foot at 8 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 6 seconds and NW 1 foot at 3 seconds.
.MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: NW
1 foot at 3 seconds and SW 1 foot at 5 seconds, becoming N 1 foot
at 3 seconds and SW 1 foot at 5 seconds.
.MON NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 2 seconds and SW 1 foot at 5 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 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.

$$

ANZ234-250600-
Buzzards Bay-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and N 1 foot
at 6 seconds. A slight chance of showers.
.TONIGHT...W winds around 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 6 seconds and NW 1 foot at 5 seconds.
.SUN...NW winds 10 to 15 kt, becoming W 5 to 10 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds
and NW 1 foot at 3 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: NW 1 foot at 3 seconds
and SW 1 foot at 6 seconds, becoming N 1 foot at 4 seconds and SW
1 foot at 5 seconds.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
1 foot or less. Wave Detail: N 1 foot at 4 seconds and SW 1 foot
at 5 seconds.
.MON NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 2 seconds and SW 1 foot at 5 seconds.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or
less.

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.

$$

ANZ235-250600-
Rhode Island Sound-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds around 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and SE 2 ft at
8 seconds. A slight chance of showers.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and SE 2 ft at
8 seconds.
.SUN...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 5 seconds and SE 1 foot at 8 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
W 2 ft at 5 seconds and SE 1 foot at 9 seconds.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: NW 1 foot at 2 seconds and SW 1 foot at
5 seconds.
.MON NIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave
Detail: W 1 foot at 2 seconds and SW 1 foot at 5 seconds.
.TUE THROUGH WED NIGHT...S winds 5 to 10 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.

$$

ANZ237-250600-
Block Island Sound-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: SW 2 ft at 5 seconds and E 2 ft at
9 seconds. A slight chance of showers.
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 2 to 4 ft. Wave Detail: W 2 ft at 4 seconds and SW 2 ft at
7 seconds.
.SUN...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 3 seconds and SW 1 foot at 6 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
W 1 foot at 3 seconds and S 1 foot at 7 seconds.
.MON...NW winds around 5 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: W 1 foot at 2 seconds and S 1 foot at
5 seconds.
.MON NIGHT...SW winds around 5 kt, becoming W after midnight.
Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and S
1 foot at 5 seconds.
.TUE THROUGH WED...SW winds 5 to 10 kt. Seas around 2 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

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.

$$

ANZ230-250600-
Boston Harbor-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds around 10 kt. Waves around 2 ft. A
chance of showers.
.TONIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.SUN...NW winds 5 to 10 kt. Waves around 2 ft.
.SUN NIGHT...NW winds around 5 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.MON...N winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less.
.MON NIGHT...S winds around 5 kt, becoming W after midnight.
Waves 1 foot or less.
.TUE THROUGH WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or
less.

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.

$$

ANZ236-250600-
Narragansett Bay-
105 PM EDT Sat May 24 2025

.THIS AFTERNOON...W winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A slight chance of showers.
.TONIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.SUN...NW winds 5 to 10 kt. Waves around 2 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.MON...N winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less.
.MON NIGHT...SW winds around 5 kt, becoming W after midnight.
Waves 1 foot or less.
.TUE THROUGH WED...SW winds 5 to 10 kt. Waves 1 foot or less.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.

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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