816
FZUS51 KBOX 251705
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
105 PM EDT Wed Jun 25 2025

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

ANZ200-260600-
105 PM EDT Wed Jun 25 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front drops south out of Canada on today with pop-up showers
and thunderstorms. Cold front remains south of the southern waters
late this week and will be a source for shower activity. An area of
high pressure exits eastern Canada late this week and brings gusty
northeasterly flow into early this weekend.

$$

ANZ250-260600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 3 seconds and SE 1 foot at 10 seconds.
Isolated showers.
.TONIGHT...S winds around 5 kt, becoming NE 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 8 seconds and NW 1 foot at 3 seconds.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 6 seconds.
.FRI...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 7 seconds.
.FRI NIGHT...SE winds around 10 kt. Seas 2 to 4 ft. Wave Detail:
SE 4 ft at 8 seconds. A chance of showers after midnight.
.SAT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely.
.SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 5 ft. A chance of showers.
.SUN...NE winds 5 to 10 kt. Seas 4 to 5 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 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.

$$

ANZ251-260600-
Massachusetts Bay and Ipswich Bay-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 2 seconds and NE 1 foot at 8 seconds.
Isolated showers.
.TONIGHT...SE winds around 5 kt, becoming NE 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 1 foot or less, then 2 to
3 ft after midnight. Wave Detail: NW 1 foot at 2 seconds and E
1 foot at 7 seconds, becoming NE 2 ft at 6 seconds and NW 1 foot
at 2 seconds.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 5 seconds. A chance of showers in the evening.
.FRI...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 6 seconds.
.FRI NIGHT...SE winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
E 3 ft at 6 seconds. A chance of showers after midnight.
.SAT...SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. A chance of
showers.
.SUN...NE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 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.

$$

ANZ231-260600-
Cape Cod Bay-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NW 1 foot at 3 seconds and E 1 foot at 9 seconds.
Isolated showers.
.TONIGHT...E winds around 5 kt, becoming NE 10 to 15 kt after
midnight. Seas 1 foot or less, then 2 to 3 ft after midnight.
Wave Detail: N 1 foot at 3 seconds and E 1 foot at 7 seconds,
becoming NW 1 foot at 3 seconds and NE 1 foot at 7 seconds.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds. A chance of
showers in the afternoon.
.THU NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NE 2 ft at 4 seconds. A chance of showers in the evening.
.FRI...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
1 foot at 3 seconds.
.FRI NIGHT...SE winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 1 foot at 2 seconds. A chance of showers after
midnight.
.SAT AND SAT NIGHT...SE winds 10 to 15 kt with gusts up to 20 kt,
becoming SW. Seas 2 to 3 ft. A chance of showers.
.SUN...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 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.

$$

ANZ254-260600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 3 seconds and SE 1 foot at 10 seconds.
Isolated showers.
.TONIGHT...E winds around 5 kt, becoming NE 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 9 seconds and W 1 foot at 4 seconds. Patchy fog after
midnight with vsby 1 to 3 NM.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds. A chance of
showers in the afternoon.
.THU NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 6 seconds. A chance of showers in the evening.
.FRI...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft
at 7 seconds.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 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.

$$

ANZ255-260600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 10 seconds.
Isolated showers and tstms. Some tstms may produce gusty winds
and heavy rainfall.
.TONIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 8 seconds and SW 1 foot at 4 seconds. Patchy fog. Vsby
1 to 3 NM.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 6 seconds and SW 1 foot
at 4 seconds. A chance of showers in the afternoon.
.THU NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 6 seconds. A chance of showers in the evening.
.FRI...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: E 4 ft
at 7 seconds.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. A chance of showers.
.SUN NIGHT...W 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.

$$

ANZ256-260600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Isolated
showers and tstms. Some tstms may produce gusty winds and heavy
rainfall.
.TONIGHT...SE winds 5 to 10 kt, becoming E 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and
SW 1 foot at 4 seconds. A chance of showers after midnight with
vsby 1 to 3 NM.
.THU...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at
4 seconds. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds. A
chance of showers in the evening.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 3 ft at 5 seconds.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt. Seas 3 to 4 ft. A chance
of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 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.

$$

ANZ232-260600-
Nantucket Sound-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: W 1 foot at 4 seconds and E 1 foot at 8 seconds. Isolated
showers and tstms. Some tstms may produce gusty winds and heavy
rainfall.
.TONIGHT...E winds around 5 kt, becoming NE 10 to 15 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Wave Detail: SW 1 foot at 4 seconds and NE 1 foot at 6 seconds.
Patchy fog after midnight with vsby 1 to 3 NM.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and SW 1 foot at
4 seconds. A chance of showers in the afternoon.
.THU NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 4 seconds. A chance of showers in the evening.
.FRI...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 4 seconds.
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 5 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...W 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.

$$

ANZ233-260600-
Vineyard Sound-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 4 seconds and SE 1 foot at 9 seconds.
Scattered showers with isolated tstms. Some tstms may produce
gusty winds and heavy rainfall.
.TONIGHT...E winds around 5 kt, becoming NE 10 to 15 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds,
becoming SW 1 foot at 4 seconds and E 1 foot at 7 seconds.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot
at 4 seconds. A chance of showers in the afternoon.
.THU NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
NE 1 foot at 4 seconds. A chance of showers in the evening.
.FRI...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E
1 foot at 3 seconds.
.FRI NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 4 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.SUN NIGHT...W 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.

$$

ANZ234-260600-
Buzzards Bay-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SW 1 foot at 4 seconds and SE 1 foot at 9 seconds.
Scattered showers with isolated tstms. Some tstms may produce
gusty winds and heavy rainfall.
.TONIGHT...E winds around 5 kt, becoming NE 10 to 15 kt after
midnight. Seas 1 foot or less, then around 2 ft after midnight.
Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 6 seconds,
becoming SW 1 foot at 4 seconds and E 1 foot at 7 seconds.
.THU...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE
1 foot at 3 seconds and SW 1 foot at 4 seconds. A chance of
showers in the afternoon.
.THU NIGHT...NE winds 10 to 15 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: NE 1 foot at
3 seconds, becoming E 1 foot at 3 seconds. A chance of showers in
the evening.
.FRI...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E
1 foot at 2 seconds.
.FRI NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 4 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. A chance of showers.
.SUN NIGHT...W 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.

$$

ANZ235-260600-
Rhode Island Sound-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 4 seconds and SE 1 foot at 9 seconds.
Isolated showers and tstms. Some tstms may produce gusty winds
and heavy rainfall.
.TONIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and
S 1 foot at 4 seconds.
.THU...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot
at 4 seconds. A chance of showers in the afternoon.
.THU NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE
3 ft at 5 seconds. A chance of showers in the evening.
.FRI...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 5 seconds.
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance
of showers.
.SUN NIGHT...W 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.

$$

ANZ237-260600-
Block Island Sound-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: W 1 foot at 3 seconds and SE 1 foot at 9 seconds.
Isolated showers and tstms. Some tstms may produce gusty winds
and heavy rainfall.
.TONIGHT...E winds around 5 kt, becoming NE 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: E 2 ft at 9 seconds and
SW 1 foot at 3 seconds. A chance of showers after midnight.
.THU...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot at
4 seconds. A chance of showers.
.THU NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. A
chance of showers in the evening.
.FRI...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds.
.FRI NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds. A chance of showers after midnight.
.SAT THROUGH SUN...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance
of showers.
.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.

$$

ANZ230-260600-
Boston Harbor-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Waves 1 foot or less.
Isolated showers.
.TONIGHT...E winds around 5 kt, becoming NE after midnight. Waves
1 foot or less, then around 2 ft after midnight.
.THU...NE winds 10 to 15 kt. Waves around 2 ft in the morning,
then 1 foot or less.
.THU NIGHT...E winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers in the evening.
.FRI...E winds 5 to 10 kt. Waves 1 foot or less.
.FRI NIGHT...SE winds around 10 kt. Waves 1 foot or less. A
chance of showers after midnight.
.SAT AND SAT NIGHT...SE winds around 10 kt, becoming NE. Waves
2 to 3 ft. A chance of showers.
.SUN...N winds 5 to 10 kt. Waves 1 foot or less, except 2 to 4 ft
at the outer harbor entrance. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt. Waves 1 foot or less, except
2 to 4 ft at the outer harbor entrance.

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.

$$

ANZ236-260600-
Narragansett Bay-
105 PM EDT Wed Jun 25 2025

.THIS AFTERNOON...NW winds around 5 kt. Waves 1 foot or less.
Scattered showers with isolated tstms. Some tstms may produce
gusty winds and heavy rainfall.
.TONIGHT...SE winds around 5 kt, becoming NE after midnight.
Waves 1 foot or less, then around 2 ft after midnight.
.THU...NE winds around 10 kt. Waves around 2 ft. A chance of
showers in the afternoon.
.THU NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers in the evening.
.FRI...E winds 5 to 10 kt. Waves 2 to 3 ft.
.FRI NIGHT...E winds around 10 kt. Waves 2 to 3 ft. A chance of
showers after midnight.
.SAT THROUGH SUN...W winds 5 to 10 kt. Waves 2 to 3 ft. A chance
of showers.
.SUN NIGHT...W 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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