483
FZUS51 KBOX 030507
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
106 AM EDT Thu Jul 3 2025

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

ANZ200-031800-
106 AM EDT Thu Jul 3 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Another cold front moves through late today into early Fri with
potential for a few showers and storms over the waters. High pres
into this weekend into next week.

$$

ANZ250-031800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds.
.THU...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 9 seconds.
.THU NIGHT...NW winds around 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and SE
2 ft at 9 seconds. A chance of showers in the evening.
.FRI...NW winds around 10 kt with gusts up to 20 kt, becoming W
in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
8 seconds and NW 1 foot at 3 seconds.
.FRI NIGHT...SW winds around 10 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot
at 3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at
8 seconds.
.SUN...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.SUN NIGHT THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up
to 30 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.

$$

ANZ251-031800-
Massachusetts Bay and Ipswich Bay-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and E 1 foot at 8 seconds.
.THU...W winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at
3 seconds. A chance of showers in the afternoon.
.THU NIGHT...NW winds around 10 kt. Seas around 2 ft. Wave
Detail: W 1 foot at 2 seconds and S 1 foot at 4 seconds. A chance
of showers in the evening.
.FRI...NW winds around 10 kt. Seas around 2 ft. Wave Detail: NW
1 foot at 2 seconds and SE 1 foot at 7 seconds.
.FRI NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NW 1 foot at 2 seconds and SE 1 foot at 6 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and NW 1 foot
at 2 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ231-031800-
Cape Cod Bay-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SW 1 foot at 3 seconds and E 1 foot at 8 seconds. Patchy
fog.
.THU...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 1 foot or less, then around 2 ft in the afternoon. Wave
Detail: SW 1 foot at 3 seconds and E 1 foot at 8 seconds.
.THU NIGHT...W winds around 10 kt, becoming NW after midnight.
Seas around 2 ft in the evening, then 1 foot or less. Wave
Detail: W 1 foot at 2 seconds and S 1 foot at 5 seconds, becoming
NW 1 foot at 2 seconds and SE 1 foot at 7 seconds. A chance of
showers in the evening.
.FRI...NW winds around 10 kt, becoming NE in the afternoon. Seas
around 2 ft in the morning, then 1 foot or less. Wave Detail: NW
1 foot at 3 seconds and S 1 foot at 7 seconds, becoming N 1 foot
at 3 seconds and S 1 foot at 7 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less. Wave Detail: S 1 foot at 3 seconds and NW
1 foot at 3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and S
1 foot at 7 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ254-031800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 4 ft. Wave
Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at
7 seconds and W 1 foot at 3 seconds.
.FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 8 seconds and NW 1 foot at 3 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at
3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and NW 1 foot at
3 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ255-031800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas 3 to 4 ft. Wave
Detail: S 4 ft at 7 seconds and W 1 foot at 2 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and E 1 foot at 8 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and W 1 foot at 3 seconds.
.FRI...N winds around 10 kt, becoming W in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at
2 seconds.
.FRI NIGHT...SW winds around 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and E 1 foot at
8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and NW 1 foot at
3 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ256-031800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: S 4 ft at 7 seconds and E 1 foot at 8 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at
7 seconds and E 1 foot at 8 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at
7 seconds and E 1 foot at 9 seconds.
.FRI...N winds around 10 kt, becoming W in the afternoon. Seas
around 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at
2 seconds.
.FRI NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas around 3 ft. Wave Detail: S 3 ft at 8 seconds and
E 2 ft at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and NW 1 foot at
3 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 kt. Seas 3 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.

$$

ANZ232-031800-
Nantucket Sound-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S
2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at
7 seconds and W 1 foot at 3 seconds.
.FRI...N winds around 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: NW 1 foot at 2 seconds and S 1 foot at
7 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and S
1 foot at 6 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot
at 8 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ233-031800-
Vineyard Sound-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at
6 seconds and W 1 foot at 3 seconds. A chance of showers in the
evening.
.FRI...NW winds around 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot at
3 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and W 1 foot
at 3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot
at 3 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ234-031800-
Buzzards Bay-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at
4 seconds and E 1 foot at 8 seconds. A chance of showers in the
evening.
.FRI...NW winds around 10 kt, becoming SW in the afternoon. Seas
around 2 ft. Wave Detail: SW 2 ft at 7 seconds and NW 1 foot at
2 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and W 1 foot
at 3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot
at 3 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ235-031800-
Rhode Island Sound-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and SE 1 foot at 8 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and SW 1 foot at 2 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at
7 seconds and W 1 foot at 3 seconds.
.FRI...NW winds around 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at
2 seconds.
.FRI NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SE
2 ft at 8 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and NW 1 foot at
3 seconds.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ237-031800-
Block Island Sound-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. Patchy
fog. Vsby 1 NM or less.
.THU...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at
7 seconds and W 1 foot at 2 seconds. Patchy fog in the morning
with vsby 1 NM or less.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at
7 seconds and W 1 foot at 3 seconds. A chance of showers in the
evening.
.FRI...N winds around 10 kt, becoming W in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and W 1 foot at
2 seconds.
.FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at
3 seconds.
.SAT AND SAT NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 7 seconds and NW 1 foot at 2 seconds.
.SUN THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to
25 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.

$$

ANZ230-031800-
Boston Harbor-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.THU...SW winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. A chance of showers in the afternoon.
.THU NIGHT...NW winds around 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. A chance of showers in the evening.
.FRI...NW winds around 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.SUN THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
25 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.

$$

ANZ236-031800-
Narragansett Bay-
106 AM EDT Thu Jul 3 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy
fog. Vsby 1 to 3 NM.
.THU...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves around 2 ft.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight.
Waves around 2 ft.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Waves
around 2 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves around 2 ft.
.SAT AND SAT NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.SUN THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up to
25 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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