Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 250502
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
101 AM EDT Mon Mar 25 2024

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

ANZ200-251800-
101 AM EDT Mon Mar 25 2024

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pres offshore combined with high pres building into the
Maritimes will lead to gusty NE winds and rough seas into Tue with
gale force gusts at times. Weak high pres builds over the waters Wed
with diminishing wind. Low pres will track south and east of the
waters Thu into Fri.

$$

ANZ250-251800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
101 AM EDT Mon Mar 25 2024

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

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 7 to 9 ft.
.MON...NE winds around 25 kt with gusts up to 30 kt. Seas 7 to
10 ft, building to 9 to 11 ft in the afternoon.
.MON NIGHT...NE winds around 25 kt with gusts up to 30 kt. Seas
10 to 13 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 11 to
13 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 9 to 12 ft. A chance of
light rain.
.WED...E winds 5 to 10 kt. Seas 6 to 9 ft. A chance of light
rain.
.WED NIGHT...S winds around 10 kt, becoming SW after midnight.
Seas 5 to 7 ft. A chance of rain.
.THU AND THU NIGHT...N winds 5 to 10 kt, increasing to 10 to
15 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely. Vsby
1 to 3 NM.
.FRI...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
7 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 7 ft. A chance of rain.

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.

$$

ANZ251-251800-
Massachusetts Bay and Ipswich Bay-
101 AM EDT Mon Mar 25 2024

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

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 7 ft.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
8 to 11 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to
11 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 8 to 10 ft, subsiding to 6 to 9 ft after midnight. A chance
of light rain.
.WED...NE winds 5 to 10 kt. Seas 5 to 8 ft, subsiding to 4 to
6 ft in the afternoon. A chance of light rain.
.WED NIGHT...SE winds 5 to 10 kt, becoming W after midnight. Seas
4 to 5 ft. A chance of rain.
.THU THROUGH FRI...NW winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 ft. A chance of rain.

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.

$$

ANZ231-251800-
Cape Cod Bay-
101 AM EDT Mon Mar 25 2024

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

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 7 ft.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
8 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
7 to 9 ft.
.TUE...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 6 to 9 ft. A chance of light
rain.
.TUE NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Seas 5 to 8 ft. A
chance of light rain.
.WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. A
chance of rain.
.THU AND THU NIGHT...N winds 5 to 10 kt, increasing to 10 to
15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. Vsby
1 to 3 NM.
.FRI...NW winds around 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 5 ft. A chance of rain.

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.

$$

ANZ254-251800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt.
Seas 8 to 11 ft.
.MON...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to
13 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
11 to 14 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 10 to
14 ft. A chance of light rain.
.TUE NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 9 to 12 ft,
subsiding to 7 to 10 ft after midnight. A chance of light rain.
.WED...SE winds around 10 kt. Seas 6 to 9 ft.
.WED NIGHT...S winds around 10 kt. Seas 5 to 7 ft. A chance of
rain.
.THU AND THU NIGHT...N winds 10 to 15 kt. Gusts up to 25 kt. Seas
5 to 6 ft. Rain likely. Vsby 1 to 3 NM.
.FRI...N winds around 20 kt with gusts up to 30 kt. Seas 6 to
8 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 40 kt. Seas
6 to 8 ft. A chance of rain.

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.

$$

ANZ255-251800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt.
Seas 7 to 10 ft.
.MON...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 9 to
12 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
9 to 13 ft.
.TUE...NE winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Gusts up to 40 kt. Seas 9 to 13 ft, subsiding to 8 to
11 ft in the afternoon. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 6 to 9 ft. A chance of light rain.
.WED...E winds 5 to 10 kt. Seas 5 to 7 ft.
.WED NIGHT...SE winds around 10 kt. Seas 4 to 6 ft. A chance of
rain.
.THU AND THU NIGHT...NE winds around 10 kt, becoming N 15 to
20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely.
.FRI...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
7 ft. Rain likely.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 8 ft. A chance of rain.

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.

$$

ANZ256-251800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt.
Seas 7 to 9 ft.
.MON...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 8 to
11 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
8 to 11 ft.
.TUE...NE winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Gusts up to 40 kt. Seas 8 to 11 ft.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight. A chance
of light rain.
.WED...E winds 5 to 10 kt. Seas 4 to 6 ft.
.WED NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 4 to 5 ft. A chance of rain.
.THU THROUGH FRI...NW winds 15 to 20 kt with gusts up to 30 kt.
Seas 4 to 6 ft. Rain likely.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 7 ft. A chance of rain.

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.

$$

ANZ232-251800-
Nantucket Sound-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt.
Seas 5 to 7 ft.
.MON...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
8 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
6 to 8 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
8 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt, diminishing to 5 to 10 kt
after midnight. Seas 4 to 6 ft. A chance of light rain.
.WED...E winds 5 to 10 kt. Seas 2 to 4 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
rain.
.THU THROUGH FRI...N winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds 20 to 25 kt with gusts up to 35 kt. Seas
3 to 5 ft. A chance of rain.

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.

$$

ANZ233-251800-
Vineyard Sound-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 35 kt.
Seas 4 to 5 ft.
.MON...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
6 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 6 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
6 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. A
chance of light rain.
.WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A
chance of rain.
.THU THROUGH FRI...N winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 3 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds around 20 kt with gusts up to 30 kt. Seas
3 to 4 ft. A chance of rain.

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.

$$

ANZ234-251800-
Buzzards Bay-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 4 to 5 ft.
.MON...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
6 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 7 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 4 to
6 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. A
chance of light rain.
.WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A
chance of rain.
.THU THROUGH FRI...N winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 3 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds around 20 kt with gusts up to 30 kt. Seas
around 3 ft. A chance of rain.

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.

$$

ANZ235-251800-
Rhode Island Sound-
101 AM EDT Mon Mar 25 2024

...GALE WARNING IN EFFECT THROUGH TUESDAY AFTERNOON...

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 35 kt.
Seas 5 to 7 ft.
.MON...NE winds around 25 kt with gusts up to 35 kt. Seas 6 to
8 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas
7 to 8 ft.
.TUE...NE winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 5 to 8 ft. A chance of light rain in the
afternoon.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt after midnight. Seas 4 to 6 ft. A
chance of light rain.
.WED AND WED NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A
chance of rain.
.THU THROUGH FRI...NW winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Rain likely. Vsby 1 to 3 NM.
.FRI NIGHT...NW winds around 20 kt with gusts up to 30 kt. Seas
4 to 5 ft. A chance of rain.

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.

$$

ANZ237-251800-
Block Island Sound-
101 AM EDT Mon Mar 25 2024

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

.REST OF TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 6 ft.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 8 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.TUE NIGHT...NE winds 10 to 15 kt. Gusts up to 25 kt in the
evening. Seas 4 to 6 ft. A chance of light rain after midnight.
.WED AND WED NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. A chance
of rain.
.THU THROUGH FRI...NW winds 15 to 20 kt with gusts up to 30 kt.
Seas 3 to 4 ft. Rain likely.
.FRI NIGHT...NW winds around 20 kt with gusts up to 30 kt. Seas
3 to 4 ft. A chance of rain.

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.

$$

ANZ230-251800-
Boston Harbor-
101 AM EDT Mon Mar 25 2024

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

.REST OF TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt.
Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to
3 ft, except 5 to 7 ft at the outer harbor entrance.
.MON NIGHT...NE winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Waves 2 to 3 ft, except 5 to
7 ft at the outer harbor entrance.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Waves 2 to
3 ft, except 5 to 8 ft at the outer harbor entrance. A chance of
light rain.
.TUE NIGHT AND WED...NE winds 15 to 20 kt with gusts up to 30 kt.
Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance. A
chance of light rain.
.WED NIGHT...SE winds 5 to 10 kt, becoming W after midnight.
Waves 1 foot or less, except 2 to 4 ft at the outer harbor
entrance. A chance of rain.
.THU THROUGH FRI...NW winds 15 to 20 kt with gusts up to 25 kt.
Waves around 2 ft. Rain likely.
.FRI NIGHT...NW winds around 20 kt with gusts up to 30 kt. Waves
around 2 ft. A chance of rain.

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.

$$

ANZ236-251800-
Narragansett Bay-
101 AM EDT Mon Mar 25 2024

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

.REST OF TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt.
Waves around 3 ft, except 4 to 6 ft at the bay entrance.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Waves around
3 ft, except 4 to 6 ft at the bay entrance.
.MON NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Waves
around 3 ft, except 5 to 7 ft at the bay entrance.
.TUE...NE winds 15 to 20 kt with gusts up to 30 kt. Waves around
3 ft, except 4 to 6 ft at the bay entrance. A chance of light
rain in the afternoon.
.TUE NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt,
becoming N 5 to 10 kt after midnight. Waves 2 to 3 ft, except
4 to 6 ft at the bay entrance. A chance of light rain.
.WED AND WED NIGHT...W winds 5 to 10 kt. Waves 2 to 4 ft. A
chance of rain.
.THU THROUGH FRI...NW winds 15 to 20 kt with gusts up to 30 kt.
Waves 2 to 3 ft. Rain likely.
.FRI NIGHT...NW winds around 20 kt with gusts up to 30 kt. Waves
around 3 ft. A chance of rain.

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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