890
FZUS51 KBOX 011704
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 PM EDT Fri Aug 1 2025

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

ANZ200-020600-
104 PM EDT Fri Aug 1 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres tracks along a front S of New England today, then out to
sea tonight. A sprawling high pres builds across New England this
weekend, with winds beginning to slacken Sat afternoon. High
pres and tranquil marine weather lingers into early next week.

$$

ANZ250-020600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 4 to 5 ft. Wave Detail: NE 4 ft at 6 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas
3 to 5 ft. Wave Detail: E 4 ft at 6 seconds and SE 1 foot at
9 seconds.
.SAT...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
9 seconds and NE 2 ft at 6 seconds.
.SAT NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 foot at
2 seconds.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at
7 seconds.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SW
2 ft at 3 seconds.

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.

$$

ANZ251-020600-
Massachusetts Bay and Ipswich Bay-
104 PM EDT Fri Aug 1 2025

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

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

$$

ANZ231-020600-
Cape Cod Bay-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: N 3 ft at 4 seconds and SE 1 foot at
9 seconds.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming
N 5 to 10 kt after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft
at 4 seconds and SE 1 foot at 9 seconds.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at
4 seconds and SE 2 ft at 8 seconds.
.SAT NIGHT...S winds around 5 kt, becoming SW after midnight.
Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and N 1 foot
at 4 seconds.
.SUN AND SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot
at 2 seconds.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 2 seconds.

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.

$$

ANZ254-020600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: NE 5 ft at 6 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 4 to 5 ft. Wave Detail: NE 5 ft at 6 seconds and SE
1 foot at 9 seconds.
.SAT...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and
SE 3 ft at 8 seconds.
.SAT NIGHT...S winds around 5 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 7 seconds and NE 1 foot at 4 seconds.
.SUN AND SUN NIGHT...S winds 5 to 10 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
Wave Detail: E 3 ft at 7 seconds and SW 1 foot at 3 seconds.

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.

$$

ANZ255-020600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 5 ft. Wave Detail: NE 5 ft at 6 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave
Detail: NE 5 ft at 6 seconds and SE 1 foot at 9 seconds.
.SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and
SE 3 ft at 7 seconds.
.SAT NIGHT...SE winds around 5 kt. Seas 2 to 4 ft. Wave Detail: E
3 ft at 7 seconds and N 1 foot at 4 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: E 3 ft at 7 seconds and SW 1 foot at 2 seconds.
.MON THROUGH TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds and SW 1 foot at 3 seconds.

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.

$$

ANZ256-020600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 5 to 6 ft. Wave Detail: NE 6 ft at 6 seconds and SE 1 foot
at 8 seconds.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: NE 6 ft
at 6 seconds and SE 1 foot at 8 seconds.
.SAT...NE winds 10 to 15 kt, becoming E 5 to 10 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds and
SE 3 ft at 7 seconds.
.SAT NIGHT...S winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 6 seconds.
.SUN AND SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 7 seconds.
.MON THROUGH TUE NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft.
Wave Detail: E 3 ft at 8 seconds.

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.

$$

ANZ232-020600-
Nantucket Sound-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: N 4 ft at 4 seconds and SE
1 foot at 8 seconds.
.SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and
SE 1 foot at 8 seconds.
.SAT NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft
at 7 seconds.
.SUN AND SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 2 seconds and N 1 foot at 4 seconds.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: E 2 ft at 7 seconds and SW 1 foot at 3 seconds.

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.

$$

ANZ233-020600-
Vineyard Sound-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: N 2 ft at 4 seconds and SE
1 foot at 8 seconds.
.SAT...N winds around 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at
8 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: S 1 foot at 2 seconds and E
1 foot at 3 seconds, becoming SW 1 foot at 2 seconds and NE
1 foot at 4 seconds.
.SUN AND SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 2 seconds and E 1 foot at 7 seconds.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: SE 2 ft at 8 seconds and SW 1 foot at 3 seconds.

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.

$$

ANZ234-020600-
Buzzards Bay-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the evening.
Seas 2 to 4 ft. Wave Detail: NE 2 ft at 4 seconds and SE 1 foot
at 8 seconds.
.SAT...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at
8 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 2 seconds and E 1 foot at 3 seconds.
.SUN AND SUN NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 2 seconds and E 1 foot at 7 seconds.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: SE 2 ft at 8 seconds and SE 1 foot at 3 seconds.

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.

$$

ANZ235-020600-
Rhode Island Sound-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 1 foot
at 9 seconds.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: N 4 ft at 4 seconds and SE
1 foot at 8 seconds.
.SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SE 2 ft at
8 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds and SE 1 foot at 4 seconds.
.SUN AND SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SW 1 foot at 2 seconds.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 8 seconds and SW 1 foot at 3 seconds.

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.

$$

ANZ237-020600-
Block Island Sound-
104 PM EDT Fri Aug 1 2025

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

.THIS AFTERNOON...NE winds around 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Wave Detail: E 4 ft at 7 seconds.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: E 4 ft at 7 seconds.
.SAT...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and SE 2 ft at
8 seconds.
.SAT NIGHT...S winds around 5 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 6 seconds and S 1 foot at 2 seconds.
.SUN AND SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SW 1 foot at 2 seconds.
.MON THROUGH TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds and SW 1 foot at 2 seconds.

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.

$$

ANZ230-020600-
Boston Harbor-
104 PM EDT Fri Aug 1 2025

.THIS AFTERNOON...NE winds around 10 kt. Waves 2 to 3 ft.
.TONIGHT...NE winds 5 to 10 kt, becoming NW after midnight. Waves
2 to 3 ft in the evening, then 1 foot or less.
.SAT...N winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less.
.SAT NIGHT...S winds 5 to 10 kt, becoming SW after midnight.
Waves 1 foot or less.
.SUN...S winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft
in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Waves around 2 ft in the evening, then 1 foot or less.
.MON THROUGH TUE NIGHT...S winds 5 to 10 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.

$$

ANZ236-020600-
Narragansett Bay-
104 PM EDT Fri Aug 1 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.
Waves around 3 ft.
.TONIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 2 to 3 ft.
.SAT...N winds 5 to 10 kt, becoming SE in the afternoon. Waves
around 2 ft.
.SAT NIGHT...SW winds around 5 kt. Waves 1 foot or less.
.SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.MON THROUGH TUE NIGHT...SE winds 5 to 10 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.

$$

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