205
FZUS51 KBOX 070803
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
403 AM EDT Tue Oct 7 2025

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

ANZ200-072100-
403 AM EDT Tue Oct 7 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres remains anchored SE of the srn New England waters through
today. SW winds becoming breezy this afternoon into Wednesday. Rain
arrives late tonight and continues through Wed. Another high pres
arrives from the NW Wed night into Thu, then moves over the N Atlc
this weekend.

$$

ANZ250-072100-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...

.TODAY...SW winds 10 to 15 kt, becoming S 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and E 2 ft at 10 seconds.
.TONIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 4 seconds and E 1 foot at 9 seconds.
.WED...SW winds 15 to 20 kt, becoming NW in the afternoon. Gusts
up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and SE 2 ft at 10 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: N 5 ft at 5 seconds and E 5 ft at
9 seconds.
.THU...N 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: N 5 ft
at 6 seconds.
.THU NIGHT...N 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: N 4 ft at 6 seconds.
.FRI THROUGH SAT NIGHT...E 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.

$$

ANZ251-072100-
Massachusetts Bay and Ipswich Bay-
403 AM EDT Tue Oct 7 2025

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at
10 seconds.
.TONIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at
9 seconds. A chance of showers after midnight.
.WED...SW winds around 15 kt, becoming NW 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. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: NW 3 ft at 4 seconds and NE 3 ft at
7 seconds.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: N 4 ft at 5 seconds.
.FRI THROUGH SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: NE 2 ft at 6 seconds and NW 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.

$$

ANZ231-072100-
Cape Cod Bay-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at
10 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at
10 seconds.
.WED...SW winds 15 to 20 kt, becoming NW in the afternoon. Gusts
up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 2 ft at 3 seconds
and E 1 foot at 9 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft. Wave Detail: N 4 ft at 6 seconds. A chance of showers
in the evening.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds.
.FRI THROUGH SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft.
Wave Detail: N 2 ft at 5 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.

$$

ANZ254-072100-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
403 AM EDT Tue Oct 7 2025

.TODAY...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 10 seconds.
Patchy fog this morning with vsby 1 NM or less.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 5 seconds and E 2 ft at 9 seconds.
.WED...SW winds 15 to 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and SE 1 foot at 11 seconds. Patchy fog. A chance of showers in
the morning. Showers in the afternoon. Vsby 1 to 3 NM, decreasing
to 1 NM or less in the afternoon.
.WED NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 5 ft at
8 seconds. A chance of showers in the evening with vsby 1 to
3 NM.
.THU AND THU NIGHT...N winds 20 to 25 kt. Seas 4 to 6 ft. Wave
Detail: N 6 ft at 7 seconds.
.FRI...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft
at 7 seconds and NW 1 foot at 4 seconds.
.FRI NIGHT AND SAT...SW winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...E winds 5 to 10 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.

$$

ANZ255-072100-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY EVENING...

.TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 10 seconds.
Patchy fog this morning with vsby 1 NM or less.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 5 seconds and E 1 foot at
9 seconds.
.WED...SW winds around 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 6 seconds
and SE 1 foot at 10 seconds. Patchy fog. A chance of showers in
the morning. Showers in the afternoon. Vsby 1 to 3 NM, decreasing
to 1 NM or less in the afternoon.
.WED NIGHT...N winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 6 seconds and E
4 ft at 8 seconds. A chance of showers in the evening with vsby
1 to 3 NM.
.THU...N winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: N 5 ft at 6 seconds.
.THU NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 3 to 5 ft. Wave Detail: N 4 ft at 6 seconds.
.FRI THROUGH SAT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 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.

$$

ANZ256-072100-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
WEDNESDAY EVENING...

.TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 10 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at
10 seconds.
.WED...SW winds around 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 6 seconds
and SE 1 foot at 10 seconds. Patchy fog. A chance of showers in
the morning. Showers in the afternoon. Vsby 1 to 3 NM.
.WED NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: N 6 ft at 5 seconds and SE 3 ft at
9 seconds. A chance of showers in the evening.
.THU...N 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: NW
5 ft at 5 seconds and E 4 ft at 8 seconds.
.THU NIGHT...N winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds.
.FRI THROUGH SAT...SE winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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.

$$

ANZ232-072100-
Nantucket Sound-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and
E 1 foot at 10 seconds. Patchy fog this morning with vsby 1 NM or
less.
.TONIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 4 seconds and E
1 foot at 10 seconds.
.WED...SW winds around 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 4 seconds
and E 1 foot at 9 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
2 to 4 ft. Wave Detail: N 4 ft at 4 seconds and NE 2 ft at
8 seconds. A chance of showers in the evening.
.THU AND THU NIGHT...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: N 4 ft at 5 seconds.
.FRI THROUGH SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: N 1 foot at 4 seconds.
.SAT NIGHT...E 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.

$$

ANZ233-072100-
Vineyard Sound-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 10 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at
10 seconds.
.WED...SW winds 15 to 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds
and SE 1 foot at 10 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 5 seconds and E 1 foot at
9 seconds. A chance of showers in the evening.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds.
.FRI THROUGH SAT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 3 seconds and NE 1 foot at 4 seconds.
.SAT NIGHT...E winds 5 to 10 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.

$$

ANZ234-072100-
Buzzards Bay-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 10 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at
10 seconds.
.WED...SW winds 15 to 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 6 seconds
and SE 1 foot at 10 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: N 2 ft at 5 seconds. A chance of showers
in the evening.
.THU AND THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds.
.FRI THROUGH SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 11 seconds and NW 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.

$$

ANZ235-072100-
Rhode Island Sound-
403 AM EDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
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.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at
10 seconds.
.WED...SW winds 15 to 20 kt, becoming W in the afternoon. Gusts
up to 25 kt. Seas 3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds
and SE 1 foot at 10 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 20 to 25 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 6 seconds and SE 2 ft at 9 seconds.
.THU AND THU NIGHT...N winds 20 to 25 kt. Seas 2 to 4 ft. Wave
Detail: NW 4 ft at 4 seconds and E 2 ft at 7 seconds.
.FRI THROUGH SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: NE 2 ft at 6 seconds and NW 1 foot at 3 seconds.
.SAT NIGHT...E 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.

$$

ANZ237-072100-
Block Island Sound-
403 AM EDT Tue Oct 7 2025

.TODAY...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at
10 seconds.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 4 seconds and SE 1 foot at
10 seconds. A chance of showers after midnight.
.WED...SW winds 15 to 20 kt, becoming NW in the afternoon. Gusts
up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and SE 1 foot at 9 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: NW 3 ft at 5 seconds and SE 2 ft at
9 seconds.
.THU...N 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: NW
3 ft at 4 seconds and E 3 ft at 7 seconds.
.THU NIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
2 ft at 4 seconds.
.FRI THROUGH SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...E 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.

$$

ANZ230-072100-
Boston Harbor-
403 AM EDT Tue Oct 7 2025

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Waves around 2 ft.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft. A chance of showers after midnight.
.WED...SW winds 10 to 15 kt, becoming NW in the afternoon. Gusts
up to 20 kt. Waves around 2 ft. Patchy fog. Showers. Vsby 1 to
3 NM.
.WED NIGHT...NW winds 15 to 20 kt. Waves around 2 ft.
.THU AND THU NIGHT...NW winds 15 to 20 kt. Waves around 2 ft.
.FRI THROUGH SAT NIGHT...E 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.

$$

ANZ236-072100-
Narragansett Bay-
403 AM EDT Tue Oct 7 2025

.TODAY...SW winds 10 to 15 kt, increasing to 15 to 20 kt this
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft.
.TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. A chance of showers after midnight.
.WED...SW winds 15 to 20 kt, becoming NW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Patchy fog.
Showers. Vsby 1 to 3 NM.
.WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.THU AND THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft.
.FRI THROUGH SAT NIGHT...E winds 5 to 10 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.

$$

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