320
FZUS51 KBOX 022006
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
406 PM EDT Wed Jul 2 2025

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

ANZ200-030900-
406 PM EDT Wed Jul 2 2025

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

$$

ANZ250-030900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and E 2 ft at 8 seconds. Areas of fog. Vsby 1 to
3 NM after midnight.
.THU...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at
4 seconds. Areas of fog in the morning. A chance of showers and
tstms in the afternoon. Some tstms may produce gusty winds and
small hail in the afternoon. Vsby 1 NM or less in the morning.
.THU NIGHT...W winds around 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
9 seconds. A chance of showers in the evening.
.FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW 2 ft
at 3 seconds and SE 2 ft at 7 seconds.
.FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and S 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 THROUGH MON NIGHT...SW winds 15 to 20 kt with gusts up to
30 kt. Seas 2 to 4 ft.

Winds and seas higher in and near tstms.

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.

$$

ANZ251-030900-
Massachusetts Bay and Ipswich Bay-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 8 seconds and SW 1 foot at 3 seconds. Areas of fog after
midnight with vsby 1 to 3 NM.
.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 and tstms in the afternoon. Some
tstms may produce gusty winds and small hail in the afternoon.
.THU NIGHT...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 chance of showers
and tstms in the evening. Some tstms may produce gusty winds and
small hail in the evening.
.FRI...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW
1 foot at 2 seconds and S 1 foot at 4 seconds.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NW 1 foot at 2 seconds and S 1 foot at 4 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.

Winds and seas higher in and near tstms.

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.

$$

ANZ231-030900-
Cape Cod Bay-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and E
1 foot at 8 seconds. Areas of fog. A slight chance of showers
this evening. Vsby 1 to 3 NM.
.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. Areas
of fog in the morning with vsby 1 NM or less.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: W 1 foot at 2 seconds and S 1 foot at
5 seconds. A chance of showers in the evening.
.FRI...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
around 2 ft. Wave Detail: NW 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: NW 1 foot at 3 seconds and S
1 foot at 4 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.

$$

ANZ254-030900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 8 seconds.
Areas of fog. A slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt. 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
3 seconds. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...SW winds around 10 kt with gusts up to 20 kt,
becoming W after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at
7 seconds and W 1 foot at 3 seconds. Patchy fog in the evening
with vsby 1 NM or less.
.FRI...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 8 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 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 2 ft at 7 seconds and SE 2 ft at
8 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.

$$

ANZ255-030900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
406 PM EDT Wed Jul 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.TONIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S
4 ft at 7 seconds and E 1 foot at 8 seconds. Areas of fog. A
slight chance of showers. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt. 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. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and E
1 foot at 9 seconds. Patchy fog. Vsby 1 NM or less, increasing to
1 to 3 NM after midnight.
.FRI...NW winds 5 to 10 kt, becoming W in the afternoon. Seas
3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and SE 2 ft at
8 seconds.
.FRI NIGHT...SW winds around 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 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: SW 3 ft at 7 seconds and NW 1 foot
at 3 seconds.
.SUN THROUGH MON...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.MON NIGHT...SW winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ256-030900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
406 PM EDT Wed Jul 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and E 1 foot at
8 seconds. Areas of fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt. 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. Areas of fog. Vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW after midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 7 seconds and E 1 foot at 9 seconds.
.FRI...NW winds around 10 kt, becoming W in the afternoon. Seas
3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and SE 2 ft at
8 seconds.
.FRI NIGHT...W winds around 10 kt, becoming NW after midnight.
Seas around 3 ft. Wave Detail: S 3 ft at 7 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: SW 3 ft at 5 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 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.

$$

ANZ232-030900-
Nantucket Sound-
406 PM EDT Wed Jul 2 2025

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

$$

ANZ233-030900-
Vineyard Sound-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and E 1 foot at
8 seconds. Areas of fog. Vsby 1 to 3 NM, decreasing to 1 NM or
less after midnight.
.THU...SW winds around 5 kt, increasing to around 10 kt with
gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail:
SW 2 ft at 7 seconds and E 1 foot at 8 seconds. Areas of fog in
the morning with vsby 1 NM or less.
.THU NIGHT...W winds 5 to 10 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 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft. Wave Detail: S 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. 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.

$$

ANZ234-030900-
Buzzards Bay-
406 PM EDT Wed Jul 2 2025

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

$$

ANZ235-030900-
Rhode Island Sound-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at
8 seconds. Areas of fog. Vsby 1 to 3 NM, decreasing to 1 NM or
less after midnight.
.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 SE 1 foot at 8 seconds. Areas of 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 5 to 10 kt 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 5 to 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...W winds around 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 2 to 3 ft. Wave
Detail: SW 3 ft at 5 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.

$$

ANZ237-030900-
Block Island Sound-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and E 1 foot at
9 seconds. Areas of fog. Vsby 1 to 3 NM, decreasing to 1 NM or
less after midnight.
.THU...SW winds 5 to 10 kt. 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. Areas of fog in the morning with vsby 1 NM or less.
.THU NIGHT...W winds 5 to 10 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...NW winds 5 to 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...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at
3 seconds.
.SAT AND SAT NIGHT...SW winds 5 to 10 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 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.

$$

ANZ230-030900-
Boston Harbor-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.THU...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers and tstms in the afternoon. Some tstms may produce gusty
winds and small hail in the afternoon.
.THU NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers and tstms in the evening. Some tstms may produce gusty
winds and small hail in the evening.
.FRI...NW winds 5 to 10 kt. Waves 1 foot or less.
.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.

Winds and waves higher in and near tstms.

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.

$$

ANZ236-030900-
Narragansett Bay-
406 PM EDT Wed Jul 2 2025

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Waves around 2 ft. Areas of fog. A slight chance of showers this
evening. Vsby 1 to 3 NM, decreasing to 1 NM or less after
midnight.
.THU...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft. Areas of fog in the morning with vsby 1 to
3 NM.
.THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight.
Waves around 2 ft.
.FRI...NW winds 5 to 10 kt. 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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