055
FZUS51 KBOX 061105
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 AM EDT Sun Apr 6 2025

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

ANZ200-070000-
704 AM EDT Sun Apr 6 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front moves into the waters this afternoon then stalls
south of New Eng tonight into Mon as low pres tracks along it.
Another cold front from the west will cross the waters early Tue
followed by gusty W-NW winds. High pres builds over the waters Wed
and moves offshore Thu. Another area of low pressure approaches from
the west Thursday.

$$

ANZ250-070000-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
704 AM EDT Sun Apr 6 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.TODAY...W winds 5 to 10 kt. Gusts up to 20 kt this morning. Seas
3 to 5 ft. Wave Detail: SE 3 ft at 6 seconds and SE 1 foot at
12 seconds. Showers likely, mainly this morning. Patchy fog this
morning. Vsby 1 NM or less, increasing to 1 to 3 NM this
afternoon.
.TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 7 seconds and N
2 ft at 3 seconds. Rain likely after midnight.
.MON...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft
at 8 seconds and N 2 ft at 4 seconds. Rain likely, mainly in the
morning.
.MON NIGHT...E winds around 10 kt. Seas 3 to 4 ft. Wave Detail:
SE 3 ft at 7 seconds and E 1 foot at 12 seconds. A chance of
showers.
.TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 35 kt. Seas 3 to 5 ft. Wave Detail: SW
3 ft at 4 seconds and E 3 ft at 6 seconds.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas
4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and E 2 ft at
7 seconds.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 3 to
5 ft.
.WED NIGHT AND THU...W winds 10 to 15 kt, becoming S. Gusts up to
25 kt. Seas 2 to 4 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ251-070000-
Massachusetts Bay and Ipswich Bay-
704 AM EDT Sun Apr 6 2025

.TODAY...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and SE 1 foot at 4 seconds. A chance of showers.
Vsby 1 NM or less, increasing to 1 to 3 NM this afternoon.
.TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and NW 1 foot at 2 seconds. Rain likely after
midnight.
.MON...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft
at 4 seconds and SE 2 ft at 8 seconds. Rain likely, mainly in the
morning.
.MON NIGHT...E winds around 10 kt, becoming SE after midnight.
Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SE 1 foot
at 8 seconds. A chance of showers.
.TUE AND TUE NIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and E 2 ft at
6 seconds.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 7 seconds.
.WED NIGHT AND THU...W winds 10 to 15 kt, becoming S. Gusts up to
20 kt. Seas 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.

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.

$$

ANZ231-070000-
Cape Cod Bay-
704 AM EDT Sun Apr 6 2025

.TODAY...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 7 seconds and SW 1 foot at 3 seconds. Showers likely with
isolated tstms this morning, then a chance of showers this
afternoon. Patchy fog this morning. Vsby 1 NM or less, increasing
to 1 to 3 NM this afternoon.
.TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds and NW 1 foot at 2 seconds. Rain after
midnight.
.MON...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft
at 3 seconds and S 2 ft at 8 seconds. Rain.
.MON NIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at
8 seconds. A chance of showers.
.TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt.
Seas 2 to 4 ft. Wave Detail: W 4 ft at 4 seconds and S 2 ft at
9 seconds.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 5 seconds and NE 1 foot at
7 seconds.
.WED NIGHT THROUGH THU 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.

$$

ANZ254-070000-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
704 AM EDT Sun Apr 6 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.TODAY...SW winds 10 to 15 kt, becoming NW 5 to 10 kt this
afternoon. Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: SE
4 ft at 7 seconds and SE 1 foot at 12 seconds. A chance of
showers. Isolated tstms this morning. Patchy fog this morning.
Vsby 1 NM or less.
.TONIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
3 to 5 ft. Wave Detail: SE 5 ft at 7 seconds and E 1 foot at
11 seconds. Rain after midnight with vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft
at 8 seconds and N 2 ft at 3 seconds. Rain, mainly in the
morning. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NE
3 ft at 5 seconds and S 3 ft at 8 seconds. Showers likely, mainly
in the evening.
.TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft
at 9 seconds and W 3 ft at 4 seconds. A chance of showers in the
morning.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 7 ft. Wave Detail: NW 5 ft at 5 seconds and S 4 ft at
9 seconds.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.WED NIGHT THROUGH THU NIGHT...S winds 10 to 15 kt with 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.

$$

ANZ255-070000-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
704 AM EDT Sun Apr 6 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.TODAY...SW winds 10 to 15 kt, becoming NW 5 to 10 kt this
afternoon. Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft
at 7 seconds and S 1 foot at 4 seconds. A slight chance of
showers. Patchy fog this morning. Vsby 1 NM or less.
.TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and E
1 foot at 6 seconds. Rain after midnight.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. Wave Detail: S 5 ft at 8 seconds and NE 2 ft at 3 seconds.
Rain. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 4 to 5 ft. Wave Detail: S 5 ft at 9 seconds and NE
2 ft at 4 seconds. Showers likely, mainly in the evening.
.TUE...W winds 10 to 15 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: W 5 ft
at 6 seconds and S 5 ft at 9 seconds. A chance of showers in the
morning.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 40 kt. Seas
5 to 8 ft. Wave Detail: W 7 ft at 7 seconds and S 4 ft at
10 seconds.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.WED NIGHT THROUGH THU NIGHT...S winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ256-070000-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
704 AM EDT Sun Apr 6 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW
5 to 10 kt this afternoon. Seas 5 to 6 ft. Wave Detail: SE 5 ft
at 7 seconds and SE 1 foot at 12 seconds. A slight chance of
showers this morning. A chance of showers this afternoon. Patchy
fog this morning. Vsby 1 NM or less.
.TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Seas 4 to 6 ft. Wave Detail: SE 6 ft at 7 seconds. Rain
after midnight.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. Wave Detail: S 5 ft at 8 seconds and NE 2 ft at 4 seconds.
Rain. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 10 to 15 kt, becoming NW after midnight.
Seas 4 to 5 ft. Wave Detail: S 5 ft at 9 seconds and NE 2 ft at
4 seconds. Showers likely, mainly in the evening.
.TUE AND TUE NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt.
Seas 5 to 7 ft. Wave Detail: W 6 ft at 6 seconds and S 5 ft at
9 seconds.
.WED...W winds 15 to 20 kt with gusts up to 35 kt. Seas 4 to
6 ft. Wave Detail: NW 5 ft at 6 seconds and S 3 ft at 9 seconds.
.WED NIGHT THROUGH THU NIGHT...S winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ232-070000-
Nantucket Sound-
704 AM EDT Sun Apr 6 2025

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW
5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave Detail: S 2 ft at
5 seconds and W 1 foot at 3 seconds. A chance of showers. Patchy
fog this morning. Vsby 1 NM or less, increasing to 1 to 3 NM this
afternoon.
.TONIGHT...NW winds around 5 kt, becoming N 10 to 15 kt after
midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds and
NW 1 foot at 2 seconds. Rain after midnight with vsby 1 to 3 NM.
.MON...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 3 seconds and S 2 ft at
8 seconds. Rain, mainly in the morning. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and S 2 ft at
8 seconds. Showers likely, mainly in the evening.
.TUE AND TUE NIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and S 2 ft at
9 seconds.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 4 seconds and NE 1 foot at
6 seconds.
.WED NIGHT THROUGH THU NIGHT...S winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ233-070000-
Vineyard Sound-
704 AM EDT Sun Apr 6 2025

.TODAY...W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft
at 6 seconds and W 1 foot at 2 seconds. A chance of showers.
Patchy fog this morning. Vsby 1 NM or less, increasing to 1 to
3 NM this afternoon.
.TONIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at
2 seconds. Rain after midnight with vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NE 2 ft at
3 seconds. Rain. Vsby 1 to 3 NM in the morning.
.MON NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at
8 seconds. Showers likely, mainly in the evening.
.TUE...W winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 5 seconds and S 3 ft at 9 seconds.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Seas
3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and S 3 ft at
10 seconds.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT THROUGH THU NIGHT...S winds 10 to 15 kt with gusts up
to 20 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.

$$

ANZ234-070000-
Buzzards Bay-
704 AM EDT Sun Apr 6 2025

.TODAY...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 6 seconds and W 1 foot at 2 seconds. A chance of showers.
Patchy fog this morning. Vsby 1 NM or less, increasing to 1 to
3 NM this afternoon.
.TONIGHT...NW winds around 5 kt, becoming N after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and W 1 foot at
2 seconds. Rain after midnight.
.MON...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 3 seconds and SW 2 ft at 8 seconds. Rain. Vsby 1 to 3 NM in
the morning.
.MON NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and NE 1 foot at
3 seconds. A chance of showers.
.TUE AND TUE NIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at
9 seconds.
.WED THROUGH THU NIGHT...S winds 15 to 20 kt with gusts up to
30 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and NE
1 foot at 6 seconds.

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.

$$

ANZ235-070000-
Rhode Island Sound-
704 AM EDT Sun Apr 6 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...W winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft
at 7 seconds and S 1 foot at 3 seconds. A chance of showers.
Patchy fog this morning. Vsby 1 NM or less, increasing to 1 to
3 NM this afternoon.
.TONIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 7 seconds. Rain
after midnight with vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and NE 2 ft at
4 seconds. Rain. Vsby 1 to 3 NM in the morning.
.MON NIGHT...NE winds around 10 kt, becoming NW after midnight.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and NE 2 ft at
4 seconds. Showers likely, mainly in the evening.
.TUE AND TUE NIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and S 5 ft at
9 seconds.
.WED THROUGH THU...S winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: W 4 ft at 5 seconds and S 3 ft at
9 seconds.
.THU NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers.

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.

$$

ANZ237-070000-
Block Island Sound-
704 AM EDT Sun Apr 6 2025

.TODAY...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: SE 4 ft
at 7 seconds and SE 1 foot at 12 seconds. A chance of showers.
Patchy fog this morning. Vsby 1 NM or less, increasing to 1 to
3 NM this afternoon.
.TONIGHT...NW winds 5 to 10 kt, becoming N after midnight. Seas
3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds. Rain after midnight
with vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and NE 2 ft at
4 seconds. Rain. Vsby 1 to 3 NM in the morning.
.MON NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and E 2 ft at
4 seconds. A chance of showers.
.TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt.
Seas 3 to 5 ft. Wave Detail: S 4 ft at 9 seconds and W 3 ft at
4 seconds.
.WED...W winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 3 ft at 5 seconds and S 2 ft at 9 seconds.
.WED NIGHT AND THU...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming S. Seas around 2 ft.
.THU NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.

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.

$$

ANZ230-070000-
Boston Harbor-
704 AM EDT Sun Apr 6 2025

.TODAY...W winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers. Vsby 1 to 3 NM this morning.
.TONIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. Rain after
midnight.
.MON...NE winds around 10 kt. Waves 1 foot or less. Rain likely,
mainly in the morning.
.MON NIGHT...E winds 5 to 10 kt, becoming S after midnight. Waves
1 foot or less. A chance of showers.
.TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt.
Waves around 2 ft.
.WED THROUGH THU...S winds 15 to 20 kt with gusts up to 30 kt.
Waves around 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. A chance of showers.

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.

$$

ANZ236-070000-
Narragansett Bay-
704 AM EDT Sun Apr 6 2025

.TODAY...NW winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers. Patchy fog this morning with vsby 1 NM or less.
.TONIGHT...N winds 5 to 10 kt. Waves 2 to 3 ft. Rain after
midnight with vsby 1 to 3 NM.
.MON...NE winds around 10 kt. Waves 2 to 3 ft. Rain. Vsby 1 to
3 NM in the morning.
.MON NIGHT...NE winds 5 to 10 kt, becoming NW after midnight.
Waves 2 to 3 ft. A chance of showers.
.TUE AND TUE NIGHT...W winds 15 to 20 kt with gusts up to 35 kt.
Waves 2 to 3 ft.
.WED THROUGH THU...S winds 10 to 15 kt with gusts up to 30 kt.
Waves 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt. Waves around 2 ft. A chance of
showers.

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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