472
FZUS51 KBOX 082004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 PM EDT Tue Jul 8 2025

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

ANZ200-090900-
404 PM EDT Tue Jul 8 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front slowly moves S across the waters tonight. Another low
pres moves along this front Wed, stalling it over the srn coastal
waters before it moves farther S Fri. High pres arrives this
weekend.

$$

ANZ250-090900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 PM EDT Tue Jul 8 2025

.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 6 seconds and E 2 ft at 13 seconds. Patchy fog. A chance
of tstms. Showers likely this evening, then a chance of showers
after midnight. Vsby 1 NM or less.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 7 seconds and E 2 ft at 11 seconds. Patchy fog. A chance of
showers in the morning. Vsby 1 NM or less, increasing to 1 to
3 NM in the afternoon.
.WED NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 7 seconds.
.THU...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 7 seconds. A chance of showers.
.THU NIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds. A chance of showers.
.FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 7 seconds.
.SAT THROUGH SUN NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 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.

$$

ANZ251-090900-
Massachusetts Bay and Ipswich Bay-
404 PM EDT Tue Jul 8 2025

.TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 13 seconds and SE 1 foot at 5 seconds. Patchy fog. A
chance of tstms. Showers likely this evening, then a chance of
showers after midnight. Vsby 1 NM or less.
.WED...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds. Patchy fog. A chance of showers and tstms in
the morning. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.WED NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 6 seconds.
.THU...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 6 seconds. A chance of showers.
.THU NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 5 seconds. A chance of showers.
.FRI AND FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 6 seconds.
.SAT THROUGH SUN NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 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.

$$

ANZ231-090900-
Cape Cod Bay-
404 PM EDT Tue Jul 8 2025

.TONIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 2 seconds and E 1 foot at
12 seconds. Patchy fog. A chance of tstms. Showers likely this
evening, then a chance of showers after midnight. Vsby 1 NM or
less.
.WED...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
1 foot or less. Wave Detail: S 1 foot at 3 seconds and E 1 foot
at 9 seconds. Patchy fog. Showers likely with a chance of tstms
in the morning. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.WED NIGHT...NE winds around 5 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 3 seconds and S 1 foot at 5 seconds. A
chance of showers.
.THU...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: NE 1 foot at 5 seconds and SE
1 foot at 5 seconds, becoming E 1 foot at 2 seconds and NE 1 foot
at 6 seconds. A chance of showers.
.THU NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 2 seconds and NE 1 foot at 6 seconds. A
chance of showers.
.FRI...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SE
1 foot at 2 seconds and NE 1 foot at 6 seconds. A chance of
showers in the morning.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less.
.SAT THROUGH SUN NIGHT...S winds 5 to 10 kt. Seas around 2 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.

$$

ANZ254-090900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 PM EDT Tue Jul 8 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming
W 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW 5 ft
at 8 seconds and E 1 foot at 13 seconds. Patchy fog. A chance of
showers and tstms. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at
12 seconds. Patchy fog. Showers likely with a chance of tstms in
the morning. Vsby 1 NM or less.
.WED NIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 1 foot at
11 seconds. A chance of showers. Vsby 1 NM or less, increasing to
1 to 3 NM after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and E 1 foot at 10 seconds. A chance of showers.
.THU NIGHT...S winds around 10 kt. Seas 2 to 4 ft. Wave Detail: S
3 ft at 7 seconds and E 2 ft at 8 seconds. A chance of showers.
Vsby 1 to 3 NM after midnight.
.FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 7 seconds and S 3 ft at 7 seconds. A chance of showers in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT THROUGH SUN NIGHT...S winds 5 to 10 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.

$$

ANZ255-090900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 PM EDT Tue Jul 8 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SE 1 foot at
13 seconds. Patchy dense fog. A chance of showers and tstms. Vsby
1 NM or less.
.WED...SW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and SE 1 foot at 12 seconds. Patchy fog. A chance of
showers and tstms in the morning. Vsby 1 NM or less.
.WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of
showers. Vsby 1 to 3 NM.
.THU...S winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at
7 seconds and SE 1 foot at 12 seconds. A chance of showers. Vsby
1 to 3 NM in the morning.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds and SE 1 foot at 11 seconds. A chance of tstms.
A chance of showers in the evening, then showers likely after
midnight with vsby 1 to 3 NM.
.FRI...S winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and E 2 ft at 10 seconds. A chance of showers in the
morning with vsby 1 to 3 NM.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft.
.SAT THROUGH SUN NIGHT...S winds 5 to 10 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.

$$

ANZ256-090900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 PM EDT Tue Jul 8 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds and SE 1 foot at
13 seconds. Patchy fog. A slight chance of tstms. A slight chance
of showers this evening, then a chance of showers after midnight.
Vsby 1 NM or less.
.WED...SW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft
at 7 seconds and SE 1 foot at 12 seconds. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.WED NIGHT...S winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of
showers. A chance of tstms after midnight. Patchy fog after
midnight. Vsby 1 NM or less, increasing to 1 to 3 NM after
midnight.
.THU...S winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and SE 1 foot at 12 seconds. A chance of showers. A
chance of tstms in the morning with vsby 1 to 3 NM.
.THU NIGHT AND FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: S 4 ft at 7 seconds and SE 1 foot at 11 seconds. A chance
of showers and tstms. Vsby 1 to 3 NM.
.FRI NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas
3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at
11 seconds.
.SAT THROUGH SUN NIGHT...S winds around 10 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.

$$

ANZ232-090900-
Nantucket Sound-
404 PM EDT Tue Jul 8 2025

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot
at 12 seconds. Patchy fog. A chance of tstms. Showers likely this
evening, then a chance of showers after midnight. Vsby 1 NM or
less.
.WED...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 5 seconds and SE 1 foot at 12 seconds. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.WED NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 6 seconds and E 1 foot at 11 seconds. A chance of
showers.
.THU...E winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at
10 seconds. A chance of showers.
.THU NIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 4 seconds and E 1 foot at 10 seconds. A chance of
showers and tstms.
.FRI...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S
2 ft at 4 seconds and E 1 foot at 10 seconds. A chance of showers
in the morning.
.FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
.SAT THROUGH SUN NIGHT...S winds 5 to 10 kt. Seas around 2 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.

$$

ANZ233-090900-
Vineyard Sound-
404 PM EDT Tue Jul 8 2025

.TONIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and
SE 1 foot at 13 seconds. Patchy fog. A chance of tstms. Showers
likely this evening, then a chance of showers after midnight.
Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 7 seconds and SE 1 foot at 12 seconds. Patchy fog in the
morning. A chance of showers and tstms in the morning with vsby
1 NM or less.
.WED NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 7 seconds and SE 1 foot at 11 seconds. A chance of
showers.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 7 seconds and E 1 foot at 11 seconds. A chance of showers.
.THU NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 6 seconds and SE 1 foot at 10 seconds. A chance of
showers and tstms.
.FRI...SE winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and E 1 foot at 10 seconds. A chance of showers
in the morning.
.FRI NIGHT...SE winds 5 to 10 kt. Seas around 2 ft.
.SAT THROUGH SUN NIGHT...S winds 5 to 10 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.

$$

ANZ234-090900-
Buzzards Bay-
404 PM EDT Tue Jul 8 2025

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 7 seconds and SE 1 foot at 12 seconds. Patchy
fog. A chance of tstms. Showers likely this evening, then a
chance of showers after midnight. Vsby 1 to 3 NM, decreasing to
1 NM or less after midnight.
.WED...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 7 seconds and SE 1 foot at 11 seconds. Patchy fog in the
morning. A chance of showers and tstms in the morning with vsby
1 NM or less.
.WED NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 7 seconds and E 1 foot at 10 seconds. A chance of
showers.
.THU...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 7 seconds and E 1 foot at 10 seconds. A chance of showers.
.THU NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
S 2 ft at 6 seconds and E 1 foot at 10 seconds. A chance of
showers and tstms.
.FRI...SE winds around 10 kt. Seas around 2 ft. Wave Detail: S
2 ft at 6 seconds and E 1 foot at 10 seconds. A chance of showers
in the morning.
.FRI NIGHT...S winds 5 to 10 kt, becoming SE after midnight. Seas
around 2 ft.
.SAT THROUGH SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 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.

$$

ANZ235-090900-
Rhode Island Sound-
404 PM EDT Tue Jul 8 2025

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

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SE 1 foot at
13 seconds. Patchy fog. A chance of showers and tstms. Vsby 1 NM
or less.
.WED...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and SE 1 foot at 12 seconds. Patchy fog in the
morning. A chance of showers and tstms in the morning with vsby
1 NM or less.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of
showers. Patchy fog in the evening. Vsby 1 NM or less, increasing
to 1 to 3 NM after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and SE 1 foot at 12 seconds. A chance of showers.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 7 seconds and SE 1 foot at 11 seconds. A chance of
showers and tstms.
.FRI...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and SE 1 foot at 11 seconds. A chance of showers in
the morning.
.FRI NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas
2 to 3 ft.
.SAT THROUGH SUN NIGHT...SW winds 5 to 10 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.

$$

ANZ237-090900-
Block Island Sound-
404 PM EDT Tue Jul 8 2025

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

.TONIGHT...SW 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: SW 4 ft at 8 seconds and SE 1 foot at 13 seconds. Patchy
fog. A chance of showers and tstms. Vsby 1 NM or less after
midnight.
.WED...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft
at 7 seconds and SE 1 foot at 13 seconds. Patchy fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.WED NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of
showers. A chance of tstms after midnight. Vsby 1 to 3 NM in the
evening.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and SE 1 foot at 12 seconds. A chance of showers.
.THU NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of
showers. A chance of tstms after midnight.
.FRI...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and SE 1 foot at 11 seconds. A chance of showers in
the morning.
.FRI NIGHT...S winds 5 to 10 kt, becoming E after midnight. Seas
2 to 3 ft.
.SAT THROUGH SUN NIGHT...SW winds 5 to 10 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.

$$

ANZ230-090900-
Boston Harbor-
404 PM EDT Tue Jul 8 2025

.TONIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog.
A chance of tstms. Showers likely this evening, then a chance of
showers after midnight. Vsby 1 NM or less.
.WED...NE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A
chance of showers and tstms in the morning with vsby 1 NM or
less.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.THU...E winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.THU NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.FRI AND FRI NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less.
.SAT THROUGH SUN NIGHT...SW winds 10 to 15 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.

$$

ANZ236-090900-
Narragansett Bay-
404 PM EDT Tue Jul 8 2025

.TONIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. A
chance of tstms. Showers likely this evening, then a chance of
showers after midnight. Vsby 1 to 3 NM, decreasing to 1 NM or
less after midnight.
.WED...W winds around 5 kt, becoming SE in the afternoon. Waves
2 to 3 ft. Patchy fog in the morning. A chance of showers and
tstms in the morning with vsby 1 NM or less.
.WED NIGHT...E winds 5 to 10 kt. Waves around 2 ft. A chance of
showers. A chance of tstms in the evening.
.THU...SE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.THU NIGHT...SE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers and tstms.
.FRI...SE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers in the morning.
.FRI NIGHT...S winds 5 to 10 kt, becoming N after midnight. Waves
around 2 ft.
.SAT THROUGH SUN NIGHT...SW winds 5 to 10 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.

$$

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