Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 170104
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
904 PM EDT Mon Apr 16 2018

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

ANZ200-171415-
904 PM EDT Mon Apr 16 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong area of low pres will lift over New England tonight,
then head NE toward the Maritimes Tue and Wed. Brief weak high
pres will move over the water Wed, followed by a clipper low on
Thu. This low should linger near the Maritimes for Fri.

For information on possible hazardous weather beyond the 24-36
hour forecast period, please visit www.weather.gov/boston and
follow the Current Hazards link above the map on the left.

$$

ANZ250-171415-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt. Gusts
up to 30 kt. Seas 9 to 14 ft. Areas of dense fog. A chance of
showers late this evening. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to
9 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 7 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
7 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of rain.
.THU...S winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to
5 ft. Areas of fog. Rain likely. Vsby 1 to 3 NM.
.THU NIGHT...N winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 4 to 6 ft. Rain likely.
Vsby 1 to 3 NM.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.FRI NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT...N winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...W 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.

$$

ANZ251-171415-
Massachusetts Bay and Ipswich Bay-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...SE winds 15 to 20 kt, becoming S 5 to 10 kt. Gusts
up to 30 kt. Seas 8 to 13 ft. Areas of fog. A chance of showers
late this evening. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 6 to
9 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. A chance of rain.
.THU...SE winds around 5 kt, becoming E in the afternoon. Seas
2 to 4 ft. Areas of fog. Rain likely. Vsby 1 to 3 NM.
.THU NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. Rain likely. Vsby 1 to 3 NM.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...N winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...NW 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.

$$

ANZ231-171415-
Cape Cod Bay-
904 PM EDT Mon Apr 16 2018

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

.OVERNIGHT...S winds 15 to 20 kt with gusts up to 30 kt, becoming
SW 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft. Areas of
fog. A chance of showers late this evening. Vsby 1 NM or less,
increasing to 1 to 3 NM.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
rain.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Rain likely. Vsby 1 to
3 NM.
.THU NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Rain likely.
Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...N winds 5 to 10 kt. Seas around 2 ft.
.SAT 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.

$$

ANZ254-171415-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt. Gusts
up to 30 kt. Seas 8 to 11 ft. Areas of dense fog late this
evening, then areas of fog. Showers likely late this evening.
Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 7 to
10 ft.
.TUE NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 5 to 8 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 4 to 7 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 4 to 6 ft. A chance of rain. Vsby
1 to 3 NM.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 8 ft. A chance of rain. Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft.
.SAT...N winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...W 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.

$$

ANZ255-171415-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
8 to 11 ft. Areas of fog. A chance of showers late this evening.
Vsby 1 NM or less, increasing to 1 to 3 NM.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 7 to 10 ft.
.TUE NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 6 to 9 ft.
.WED...W winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 4 to 7 ft. A chance of rain.
.THU...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas 4 to 7 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
6 to 9 ft. A chance of rain. Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT...N winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...W 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.

$$

ANZ256-171415-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
9 to 11 ft. Areas of fog. Vsby 1 to 3 NM late this evening.
.TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to
10 ft.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 30 kt. Seas
6 to 9 ft.
.WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to
8 ft.
.WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt,
becoming S 5 to 10 kt after midnight. Seas 4 to 7 ft. A chance of
rain.
.THU...SE winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas 4 to 7 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
6 to 9 ft. A chance of rain. Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.FRI NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT...W winds around 10 kt. Seas around 2 ft.
.SAT 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.

$$

ANZ232-171415-
Nantucket Sound-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH
LATE TUESDAY NIGHT...

.OVERNIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt. Gusts
up to 25 kt. Seas 2 to 4 ft. Areas of fog. A chance of showers
late this evening. Vsby 1 NM or less.
.TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. A chance of rain.
.THU NIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft. A chance of rain.
Vsby 1 to 3 NM.
.FRI...NW winds around 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...N winds 5 to 10 kt. Seas around 2 ft.
.SAT 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.

$$

ANZ233-171415-
Vineyard Sound-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH
LATE TUESDAY NIGHT...

.OVERNIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft. Areas of fog. Vsby 1 to 3 NM.
.TUE...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas 2 to 4 ft. A chance of rain.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of rain. Vsby 1 to 3 NM.
.FRI...NW winds around 10 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...N winds 5 to 10 kt. Seas 1 foot or less.
.SAT NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ234-171415-
Buzzards Bay-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH
LATE TUESDAY NIGHT...

.OVERNIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Areas of fog. Vsby 1 NM or less late this evening.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW around 5 kt after midnight. Seas 2 to 4 ft. A chance of rain.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of rain.
.THU NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of rain. Vsby 1 to 3 NM.
.FRI...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...N winds 5 to 10 kt. Seas 1 foot or less.
.SAT NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ235-171415-
Rhode Island Sound-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
7 to 10 ft. Areas of fog. Vsby 1 to 3 NM late this evening.
.TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.TUE NIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 5 to 8 ft.
.WED...W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft.
.WED NIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
SW 5 to 10 kt after midnight. Seas 4 to 6 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 5 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...NW winds around 10 kt. Seas around 2 ft.
.SAT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...W winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ237-171415-
Block Island Sound-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.OVERNIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
6 to 9 ft. Areas of fog. Vsby 1 to 3 NM late this evening.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
8 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
S around 5 kt after midnight. Seas 2 to 4 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas 2 to 4 ft. A chance of rain.
.THU NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. A chance of rain.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...NW winds around 10 kt. Seas around 2 ft.
.SAT...W winds 5 to 10 kt. Seas 1 foot or less.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.

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.

$$

ANZ230-171415-
Boston Harbor-
904 PM EDT Mon Apr 16 2018

.OVERNIGHT...SE winds 10 to 15 kt, becoming SW 5 to 10 kt. Gusts
up to 20 kt. Waves 2 to 3 ft, except 6 to 9 ft at the outer
harbor entrance. Areas of fog. Vsby 1 NM or less, increasing to
1 to 3 NM.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft, except 4 to 7 ft at the outer harbor entrance.
.TUE NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves around
2 ft.
.WED NIGHT...W winds 5 to 10 kt. Waves around 2 ft. A chance of
rain.
.THU...SE winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less. Areas of fog. Rain likely. Vsby 1 to 3 NM.
.THU NIGHT...N winds 5 to 10 kt. Waves 1 foot or less. Rain
likely.
.FRI...N winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.FRI NIGHT...N winds 5 to 10 kt. Waves 1 foot or less.
.SAT...N winds 5 to 10 kt. Waves 1 foot or less.
.SAT NIGHT...NW winds around 5 kt. Waves 1 foot or less.

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.

$$

ANZ236-171415-
Narragansett Bay-
904 PM EDT Mon Apr 16 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT TUESDAY THROUGH
TUESDAY AFTERNOON...

.OVERNIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt. Gusts
up to 20 kt. Waves 3 to 5 ft, except 5 to 8 ft at the bay
entrance. Areas of fog. Vsby 1 to 3 NM late this evening.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Waves 3 to
5 ft.
.TUE NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 25 kt. Waves 2 to 4 ft.
.WED...W winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
4 ft.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW around 5 kt after midnight. Waves 2 to 4 ft. A chance of rain.
.THU...SE winds 5 to 10 kt, becoming SW in the afternoon. Waves
2 to 3 ft. A chance of rain.
.THU NIGHT...NW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves 2 to 3 ft. A chance of rain.
.FRI...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SAT...NW winds 5 to 10 kt. Waves 1 foot or less.
.SAT NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less.

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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