Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 220802
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
402 AM EDT Tue May 22 2018

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

ANZ200-222030-
402 AM EDT Tue May 22 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
Low pressure will move east from the eastern Great Lakes today
with its warm front skirting the south coast of New England.
The low will exit the waters Wed morning. A cold front will move
southward across the waters Wed evening. High pres builds over
the waters Thu, the SE of the waters Fri. A cold front may pass
southward across the waters late in the day on Sat.

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.

$$

ANZ250-222030-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
402 AM EDT Tue May 22 2018

.TODAY...SE winds around 5 kt, becoming S this afternoon. Seas
2 to 3 ft. A chance of showers this afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Showers likely. Vsby 1 to 3 NM.
.WED...W winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt, becoming NE with gusts up to
20 kt after midnight. Seas 2 to 3 ft. A chance of showers. Vsby
1 to 3 NM.
.THU...NE winds 5 to 10 kt, becoming SE with gusts up to 20 kt in
the afternoon. Seas 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 3 to 5 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.
.SAT NIGHT...E winds 5 to 10 kt. Seas 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.

$$

ANZ251-222030-
Massachusetts Bay and Ipswich Bay-
402 AM EDT Tue May 22 2018

.TODAY...W winds around 5 kt, becoming S this afternoon. Seas
1 foot or less. A chance of showers this afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Showers likely. Vsby 1 to 3 NM.
.WED...W winds around 5 kt, becoming E in the afternoon. Seas
1 foot or less. Patchy fog. Vsby 1 to 3 NM.
.WED NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas
around 2 ft. A chance of showers. Vsby 1 to 3 NM.
.THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SAT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. 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.

$$

ANZ231-222030-
Cape Cod Bay-
402 AM EDT Tue May 22 2018

.TODAY...SW winds around 5 kt, becoming S this afternoon. Seas
1 foot or less. A chance of showers this afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Showers. Vsby 1 to 3 NM.
.WED...NW winds around 5 kt. Seas 1 foot or less. Patchy fog.
Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt, becoming NE after midnight.
Seas 1 foot or less.
.THU...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft.
.SAT...SW winds 10 to 15 kt. Seas around 2 ft.
.SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. 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.

$$

ANZ254-222030-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
this afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Showers. Vsby 1 NM or less.
.WED...W winds around 5 kt. Seas 2 to 3 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds around 5 kt, becoming N after midnight.
Seas 2 to 4 ft.
.THU...E winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers. 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.

$$

ANZ255-222030-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
this afternoon.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. Patchy fog. Showers. Vsby 1 NM or less.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 4 ft.
.THU...E winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 7 ft.
.SAT...SW winds around 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 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.

$$

ANZ256-222030-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog this
afternoon. Showers this afternoon with vsby 1 to 3 NM.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft. Patchy fog. Showers. Vsby 1 NM or less.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM
or less.
.WED NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 2 to 4 ft.
.THU...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
2 to 4 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 7 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.SAT NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 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.

$$

ANZ232-222030-
Nantucket Sound-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers this afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Showers. Vsby 1 NM or less.
.WED...W winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft.
.THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. 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.

$$

ANZ233-222030-
Vineyard Sound-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Showers likely
this afternoon.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog.
Showers. Vsby 1 NM or less.
.WED...W winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.WED NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft.
.THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft.
.THU NIGHT...SW winds around 10 kt. Seas around 2 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. 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.

$$

ANZ234-222030-
Buzzards Bay-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 1 foot or less. Showers likely
this afternoon.
.TONIGHT...S winds around 5 kt. Seas 1 foot or less. Patchy fog.
Showers. Vsby 1 to 3 NM.
.WED...W winds 5 to 10 kt. Seas 1 foot or less. Patchy fog. Vsby
1 NM or less.
.WED NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft.
.THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.SAT...SW winds around 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. 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.

$$

ANZ235-222030-
Rhode Island Sound-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog this
afternoon. Showers this afternoon.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Patchy fog. Showers. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.WED NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft.
.THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT NIGHT...NW winds 10 to 15 kt. Seas 2 to 4 ft. A chance of
showers. 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.

$$

ANZ237-222030-
Block Island Sound-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers this
afternoon.
.TONIGHT...SE winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Patchy fog. Showers. Vsby 1 NM or less.
.WED...W winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 NM or less.
.WED NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft.
.THU...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 3 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 3 to 5 ft.
.SAT...SW winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT NIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers. 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.

$$

ANZ230-222030-
Boston Harbor-
402 AM EDT Tue May 22 2018

.TODAY...W winds around 5 kt, becoming S this afternoon. Waves
1 foot or less. Showers likely this afternoon.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. Patchy fog.
Showers likely.
.WED...NW winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less. Patchy fog.
.WED NIGHT...W winds around 5 kt, becoming NE after midnight.
Waves 1 foot or less. A chance of showers.
.THU...E winds 5 to 10 kt. Waves 1 foot or less.
.THU NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.FRI...W winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.SAT...SW winds around 5 kt. Waves 1 foot or less. A chance of
showers.
.SAT NIGHT...E winds around 5 kt. Waves 1 foot or less. A chance
of showers. 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.

$$

ANZ236-222030-
Narragansett Bay-
402 AM EDT Tue May 22 2018

.TODAY...S winds 5 to 10 kt. Waves around 2 ft. Showers this
afternoon.
.TONIGHT...SE winds around 5 kt, becoming SW around 5 kt after
midnight. Waves around 2 ft. Patchy fog. Showers. Vsby 1 NM or
less.
.WED...W winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Waves around 2 ft. Patchy fog. Vsby 1 NM or less.
.WED NIGHT...SW winds around 5 kt, becoming N after midnight.
Waves around 2 ft.
.THU...NE winds around 5 kt, becoming SE in the afternoon. Waves
around 2 ft.
.THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.SAT...SW winds 5 to 10 kt. Waves 2 to 3 ft.
.SAT NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. A chance of
showers. 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.

$$

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