Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 241401
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1001 AM EDT Sun Mar 24 2024

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

ANZ200-250300-
1001 AM EDT Sun Mar 24 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.

$$

ANZ250-250300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.THIS AFTERNOON...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 8 to 11 ft.
.TONIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to
10 ft.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to
12 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
10 to 13 ft.
.TUE AND TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 9 to 13 ft. A chance of rain.
.WED...E winds around 10 kt. Seas 6 to 9 ft. A chance of rain.
.WED NIGHT...S winds around 10 kt. Seas 5 to 7 ft. A chance of
rain.
.THU AND THU NIGHT...NW winds around 10 kt, becoming N 15 to
20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain likely. Vsby
1 to 3 NM.

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.

$$

ANZ251-250300-
Massachusetts Bay and Ipswich Bay-
1001 AM EDT Sun Mar 24 2024

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

.THIS AFTERNOON...N winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 4 to 6 ft.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft, building to 5 to 8 ft after midnight.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 8 to
10 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
8 to 11 ft.
.TUE AND TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 8 to 11 ft. A chance of rain.
.WED...E winds around 10 kt. Seas 5 to 8 ft. A chance of rain.
.WED NIGHT...S winds 5 to 10 kt. Seas 4 to 6 ft. A chance of
rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Seas 3 to 5 ft. Rain likely.

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.

$$

ANZ231-250300-
Cape Cod Bay-
1001 AM EDT Sun Mar 24 2024

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

.THIS AFTERNOON...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 6 to 7 ft.
.TONIGHT...NE winds around 20 kt with gusts up to 30 kt. Seas
6 to 8 ft.
.MON...NE winds around 20 kt with gusts up to 30 kt. Seas 7 to
9 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 15 to 20 kt, diminishing to around 10 kt
after midnight. Gusts up to 25 kt. Seas 5 to 8 ft. A chance of
rain.
.WED...E winds around 10 kt. Seas 4 to 6 ft. A chance of rain.
.WED NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 15 to 20 kt
with gusts up to 25 kt. Seas 2 to 4 ft. Rain likely. Vsby 1 to
3 NM.

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.

$$

ANZ254-250300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.THIS AFTERNOON...N winds 25 to 30 kt. Seas 9 to 13 ft.
.TONIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to
12 ft.
.MON...NE winds around 25 kt with gusts up to 35 kt. Seas 11 to
14 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
11 to 14 ft. A chance of light rain after midnight.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 10 to
14 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 9 to 12 ft. A chance of rain.
.WED...SE winds around 10 kt with gusts up to 20 kt. Seas 6 to
9 ft.
.WED NIGHT...S winds around 10 kt with gusts up to 20 kt. Seas
5 to 7 ft. A chance of rain.
.THU AND THU NIGHT...NW winds around 10 kt, becoming N 15 to
20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Rain likely. Vsby
1 to 3 NM.

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.

$$

ANZ255-250300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.THIS AFTERNOON...N winds 25 to 30 kt. Seas 9 to 13 ft.
.TONIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to
12 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
9 to 13 ft.
.TUE...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 9 to
12 ft. A chance of light rain.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt,
becoming E 10 to 15 kt with gusts up to 20 kt after midnight.
Seas 7 to 10 ft. A chance of rain.
.WED...SE winds around 10 kt. Seas 5 to 7 ft.
.WED NIGHT...S winds around 10 kt. Seas 4 to 6 ft. A chance of
rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 15 to 20 kt
with gusts up to 30 kt. Seas 4 to 6 ft. Rain likely.

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.

$$

ANZ256-250300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT THROUGH MONDAY EVENING...

.THIS AFTERNOON...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 9 to 12 ft.
.TONIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to
12 ft.
.MON...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to
12 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
9 to 12 ft.
.TUE...NE winds 25 to 30 kt with gusts up to 35 kt. Seas 8 to
11 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 with gusts up to 20 kt after midnight.
Seas 6 to 9 ft. A chance of rain after midnight.
.WED...SE winds around 10 kt. Seas 5 to 7 ft.
.WED NIGHT...S winds 5 to 10 kt. Seas 4 to 6 ft. A chance of
rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Seas 4 to 6 ft. Rain likely.

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.

$$

ANZ232-250300-
Nantucket Sound-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
EVENING...

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

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.

$$

ANZ233-250300-
Vineyard Sound-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
EVENING...

.THIS AFTERNOON...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 7 ft.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to
6 ft.
.MON...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
7 ft.
.MON NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 6 ft.
.TUE...NE winds 25 to 30 kt, diminishing to 20 to 25 kt in the
afternoon. Seas 4 to 6 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 2 to 4 ft. A chance of rain.
.WED AND WED NIGHT...E winds around 10 kt, becoming S. Seas 2 to
3 ft. A chance of rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Seas 2 to 3 ft. Rain likely.

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.

$$

ANZ234-250300-
Buzzards Bay-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
EVENING...

.THIS AFTERNOON...N winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 4 to 6 ft.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.MON...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 6 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 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 3 to 5 ft. A chance of
rain.
.WED AND WED NIGHT...E winds around 10 kt, becoming S. Seas 2 to
3 ft. A chance of rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Seas 2 to 3 ft. Rain likely.

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.

$$

ANZ235-250300-
Rhode Island Sound-
1001 AM EDT Sun Mar 24 2024

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
EVENING...

.THIS AFTERNOON...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 7 to 10 ft.
.TONIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 6 to 9 ft.
.MON...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to
9 ft.
.MON NIGHT...NE winds 25 to 30 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.
.TUE NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of
rain.
.WED AND WED NIGHT...E winds around 10 kt, becoming S. Seas 3 to
5 ft. A chance of rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Seas 3 to 4 ft. Rain likely.

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.

$$

ANZ237-250300-
Block Island Sound-
1001 AM EDT Sun Mar 24 2024

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

.THIS AFTERNOON...N winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 6 to 9 ft.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.MON...NE winds 15 to 20 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
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 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of
rain after midnight.
.WED AND WED NIGHT...E winds around 10 kt, becoming SW. Seas 3 to
5 ft. A chance of rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Seas 3 to 4 ft. Rain likely.

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.

$$

ANZ230-250300-
Boston Harbor-
1001 AM EDT Sun Mar 24 2024

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

.THIS AFTERNOON...N winds 15 to 20 kt with gusts up to 25 kt.
Waves around 2 ft, except 3 to 5 ft at the outer harbor entrance.
.TONIGHT...N 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 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft, except 5 to 7 ft at the outer harbor entrance.
.MON NIGHT...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.
.TUE AND TUE NIGHT...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. A
chance of rain.
.WED AND WED NIGHT...E winds around 10 kt, becoming S. Waves
around 2 ft, then 1 foot or less. At the outer harbor entrance,
waves 3 to 5 ft. A chance of rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, increasing to 10 to
15 kt with gusts up to 20 kt. Waves 1 foot or less, then around
2 ft. At the outer harbor entrance, waves 2 to 4 ft. Rain likely.


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.

$$

ANZ236-250300-
Narragansett Bay-
1001 AM EDT Sun Mar 24 2024

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

.THIS AFTERNOON...N winds 15 to 20 kt with gusts up to 25 kt.
Waves 2 to 3 ft, except 5 to 7 ft at the bay entrance.
.TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
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 5 to 7 ft at the bay entrance.
.MON NIGHT...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.
.TUE AND TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt.
Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. A chance
of rain.
.WED AND WED NIGHT...E winds around 10 kt, becoming SW. Waves
2 to 4 ft. A chance of rain.
.THU AND THU NIGHT...NW winds 5 to 10 kt, becoming N 10 to 15 kt
with gusts up to 25 kt. Waves 2 to 3 ft. Rain likely.

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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