599
FZUS51 KBOX 281704
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
103 PM EDT Sat Jun 28 2025

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

ANZ200-290600-
103 PM EDT Sat Jun 28 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Warm front south of the region lifts north with showers through this
morning, a cold front moves across the waters late tonight followed
by brief high pressure on Sunday. High pressure lingers through
Monday before another cold front crosses through the region during
the day on Tuesday.

$$

ANZ250-290600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at
9 seconds. Patchy fog. A slight chance of showers and tstms. Vsby
1 NM or less.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 9 seconds.
Patchy fog. A chance of showers and tstms after midnight. Vsby
1 NM or less.
.SUN...W winds around 10 kt, becoming S in the afternoon. Seas
2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and SW 1 foot at
3 seconds. Patchy fog in the morning with vsby 1 NM or less.
.SUN NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas
2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at
2 seconds.
.MON AND MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at
3 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at
8 seconds. A chance of showers.
.WED AND WED NIGHT...W winds around 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.

$$

ANZ251-290600-
Massachusetts Bay and Ipswich Bay-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 5 seconds. Patchy fog. A
slight chance of showers. Vsby 1 to 3 NM.
.TONIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 5 seconds. Patchy fog. A chance of showers after
midnight. Vsby 1 NM or less.
.SUN...W winds around 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and W 1 foot at
3 seconds. Patchy fog in the morning with vsby 1 NM or less.
.SUN NIGHT...S winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SW 1 foot at
3 seconds.
.MON...N winds around 5 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds.
.MON NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds and
E 2 ft at 8 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. A chance of showers.
.WED AND WED NIGHT...W winds 5 to 10 kt. Seas 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.

$$

ANZ231-290600-
Cape Cod Bay-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 6 seconds and S 1 foot at
3 seconds. Patchy fog. A chance of showers with a slight chance
of tstms. Vsby 1 to 3 NM.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and
S 1 foot at 3 seconds. Patchy fog. A chance of showers after
midnight. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and W 1 foot at
2 seconds. Patchy fog. Vsby 1 NM or less in the morning.
.SUN NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 6 seconds and SW 1 foot at
2 seconds.
.MON...N winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail:
SW 1 foot at 2 seconds and E 1 foot at 7 seconds, becoming E 2 ft
at 7 seconds and S 1 foot at 2 seconds.
.MON NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 8 seconds and S 1 foot at 2 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. A chance of showers.
.WED AND WED 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.

$$

ANZ254-290600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at
4 seconds. Patchy fog. A chance of showers with a slight chance
of tstms. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 9 seconds.
Patchy fog. A chance of showers and tstms after midnight. Vsby
1 NM or less.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and SW 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or
less.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE
3 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog in the
evening with vsby 1 NM or less.
.MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 2 ft at
5 seconds. Patchy fog. Vsby 1 to 3 NM.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A chance of showers.
.WED AND WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 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.

$$

ANZ255-290600-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds around 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at
4 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or
less.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 3 ft at 7 seconds. Patchy dense fog. A
chance of showers and tstms after midnight. Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and SW 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or
less.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and
SW 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or less.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to
3 NM in the afternoon.
.MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and
SE 2 ft at 8 seconds. Patchy fog. Vsby 1 to 3 NM.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.TUE NIGHT AND WED...SW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt. Seas 4 to 5 ft. A chance of showers.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ256-290600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at
4 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
3 ft at 6 seconds. Patchy dense fog. A chance of showers and
tstms after midnight. Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and SW 2 ft at 4 seconds. Patchy fog. Vsby 1 NM or
less.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and
SW 2 ft at 5 seconds. Patchy fog. Vsby 1 NM or less.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 2 ft at 5 seconds. Patchy fog. Vsby 1 to
3 NM.
.MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and
SE 3 ft at 8 seconds. Patchy fog. Vsby 1 to 3 NM.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM.
.WED AND WED NIGHT...W winds 10 to 15 kt. Seas 3 to 5 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.

$$

ANZ232-290600-
Nantucket Sound-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds around 15 kt with gusts up to 20 kt.
Seas around 3 ft. Wave Detail: SE 2 ft at 5 seconds. Patchy fog.
A chance of showers with a slight chance of tstms. Vsby 1 NM or
less.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: S 2 ft at 5 seconds. Patchy fog. A chance of
showers and tstms after midnight. Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot
at 6 seconds. Patchy fog in the morning with vsby 1 NM or less.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds
and E 1 foot at 7 seconds.
.MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot
at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
7 seconds. A chance of showers.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ233-290600-
Vineyard Sound-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at
8 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or
less.
.TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog in the
evening, then patchy dense fog after midnight. A chance of
showers and tstms after midnight. Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 foot at 7 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and
SE 1 foot at 8 seconds.
.MON AND MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot
at 8 seconds. A chance of showers.
.WED AND WED NIGHT...SW winds 10 to 15 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.

$$

ANZ234-290600-
Buzzards Bay-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds around 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 1 foot at 3 seconds and SE 1 foot
at 7 seconds. Patchy fog. A slight chance of showers and tstms.
Vsby 1 NM or less.
.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE
1 foot at 7 seconds. Patchy fog in the evening, then patchy dense
fog after midnight. A chance of showers and tstms after midnight.
Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and SE
1 foot at 7 seconds. Patchy fog in the morning with vsby 1 NM or
less.
.SUN NIGHT...W winds 5 to 10 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE
1 foot at 7 seconds, becoming SW 1 foot at 4 seconds and SE
1 foot at 8 seconds.
.MON AND MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 1 foot at 8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt, diminishing to 10 to
15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at
4 seconds and SE 1 foot at 8 seconds. A chance of showers.
.WED AND WED NIGHT...W winds 10 to 15 kt. Gusts up to 20 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.

$$

ANZ235-290600-
Rhode Island Sound-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at
9 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or
less.
.TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and S 2 ft at 5 seconds. Patchy fog in the
evening, then patchy dense fog after midnight. A chance of
showers and tstms after midnight. Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and SW 2 ft at 5 seconds. Patchy fog. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.SUN NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and
SW 2 ft at 5 seconds.
.MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at
8 seconds.
.TUE AND TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds. A chance of
showers. Vsby 1 to 3 NM.
.WED AND WED NIGHT...W winds 10 to 15 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.

$$

ANZ237-290600-
Block Island Sound-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and S 2 ft at
4 seconds. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds and S 2 ft at 4 seconds. Patchy fog. A chance
of showers and tstms after midnight. Vsby 1 NM or less.
.SUN...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog in the
morning with vsby 1 NM or less.
.SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds and W 1 foot at 4 seconds.
.MON AND MON NIGHT...SW winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and SE 2 ft at
8 seconds. A chance of showers.
.WED AND WED NIGHT...W 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.

$$

ANZ230-290600-
Boston Harbor-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...SE winds around 10 kt. Waves 1 foot or less.
Patchy fog. A slight chance of showers. Vsby 1 to 3 NM.
.TONIGHT...S winds around 10 kt. Waves 1 foot or less. Patchy
fog. A chance of showers after midnight. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.SUN...W winds around 10 kt. Waves 1 foot or less. Patchy fog in
the morning with vsby 1 to 3 NM.
.SUN NIGHT...N winds 5 to 10 kt, becoming NW after midnight.
Waves 1 foot or less.
.MON...N winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.MON NIGHT...S winds around 10 kt. Waves around 2 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Showers likely.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. A chance of showers.
.WED AND WED NIGHT...W winds 5 to 10 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.

$$

ANZ236-290600-
Narragansett Bay-
103 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. Patchy fog. A slight chance of showers. Vsby
1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A
chance of showers after midnight. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog in the
morning with vsby 1 NM or less.
.SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.MON AND MON NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 4 ft. A chance of showers.
.WED AND WED NIGHT...W 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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