Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 210516
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
116 AM EDT Mon May 21 2018

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

ANZ200-211800-
116 AM EDT Mon May 21 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front will cross the waters overnight followed by high
pressure on Mon. The high will build SE of the waters Mon night
then head E on Tue. Low pres approaches the waters from the SW  late
Tue, lifting NE Tue night. High pressure builds E over New  England
Wed and Thu, with the high building SE of the waters on  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.

$$

ANZ250-211800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.MON...NW winds around 5 kt, becoming SW in the afternoon. Seas
2 to 3 ft.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming NE after midnight. Seas
2 to 3 ft.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...SW winds 5 to 10 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.

$$

ANZ251-211800-
Massachusetts Bay and Ipswich Bay-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.MON...NW winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft.
.MON NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft.
.TUE...S winds around 5 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. A chance of showers.
.TUE NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. A chance of showers.
.WED...W winds around 5 kt, becoming SW in the afternoon. Seas
around 2 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft.
.THU...E winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...W winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...SW 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.

$$

ANZ231-211800-
Cape Cod Bay-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...N winds 5 to 10 kt. Seas around 2 ft.
.MON...N winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less.
.MON NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Seas 1 foot or less.
.TUE...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers.
.WED...W winds around 5 kt. Seas 1 foot or less.
.WED NIGHT...SW winds 5 to 10 kt, becoming N after midnight. Seas
1 foot or less.
.THU...NE winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...SW 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.

$$

ANZ254-211800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 AM EDT Mon May 21 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft.
.MON...N winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 4 ft. Patchy dense fog. Vsby 1 NM or less.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.WED...W winds 5 to 10 kt. Seas 2 to 3 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 4 ft.
.THU...NE winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 4 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 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.

$$

ANZ255-211800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 AM EDT Mon May 21 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft.
.MON...N winds 5 to 10 kt, becoming SW in the afternoon. Seas
3 to 5 ft. Patchy fog. Vsby 1 NM or less.
.MON NIGHT...SW winds around 5 kt. Seas 2 to 4 ft.
.TUE...S winds 5 to 10 kt. Seas around 3 ft. A chance of showers.
.TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas around 3 ft. A chance of showers.
.WED...W winds 5 to 10 kt. Seas 2 to 4 ft.
.WED NIGHT...W winds around 10 kt, becoming N after midnight.
Seas 3 to 4 ft.
.THU...NE winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas around 3 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 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.

$$

ANZ256-211800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 AM EDT Mon May 21 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON...

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas 4 to
5 ft.
.MON NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE...S winds 5 to 10 kt. Seas around 3 ft. A chance of showers.
.TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas around 3 ft. A chance of showers.
.WED...W winds 5 to 10 kt. Seas 3 to 4 ft.
.WED NIGHT...W winds around 10 kt, becoming N after midnight.
Seas around 4 ft.
.THU...E winds 5 to 10 kt. Seas 3 to 4 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas around 3 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 5 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.

$$

ANZ232-211800-
Nantucket Sound-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft.
.MON NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Seas 2 to 3 ft.
.TUE...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.TUE NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.WED...W winds 5 to 10 kt. Seas around 2 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 3 ft.
.THU...NE winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...SW winds 10 to 15 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.

$$

ANZ233-211800-
Vineyard Sound-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft.
.MON NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Seas 2 to 3 ft.
.TUE...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. A chance of showers.
.WED...W winds 5 to 10 kt. Seas around 2 ft.
.WED NIGHT...W winds around 10 kt, becoming N after midnight.
Seas 2 to 3 ft.
.THU...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds around 10 kt. Seas 2 to 3 ft.
.FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...SW winds 10 to 15 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.

$$

ANZ234-211800-
Buzzards Bay-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...N winds around 5 kt. Seas around 2 ft.
.MON...N winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft.
.MON NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Seas around 2 ft.
.TUE...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. A chance of showers.
.WED...W winds 5 to 10 kt. Seas 1 foot or less.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
around 2 ft.
.THU...NE winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...SW 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.

$$

ANZ235-211800-
Rhode Island Sound-
116 AM EDT Mon May 21 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas 3 to
5 ft.
.MON NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 2 to 3 ft. A chance of showers.
.WED...W winds 5 to 10 kt. Seas 2 to 4 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 4 ft.
.THU...E winds 5 to 10 kt. Seas around 3 ft.
.THU NIGHT...SW winds 5 to 10 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 10 to 15 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.

$$

ANZ237-211800-
Block Island Sound-
116 AM EDT Mon May 21 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS
MORNING...

.REST OF TONIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft.
.MON...N winds around 5 kt, becoming SW in the afternoon. Seas
2 to 4 ft.
.MON NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Seas 2 to 4 ft.
.TUE...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.TUE NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 2 to 3 ft. A chance of showers.
.WED...W winds 5 to 10 kt. Seas 2 to 4 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas
2 to 4 ft.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI...SW winds 10 to 15 kt. Seas 2 to 4 ft.
.FRI NIGHT...SW winds 10 to 15 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.

$$

ANZ230-211800-
Boston Harbor-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...NW winds around 5 kt. Waves 1 foot or less.
.MON...NW winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less.
.MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.TUE...S winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers.
.TUE NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.
.WED...W winds around 5 kt. Waves 1 foot or less.
.WED NIGHT...W winds around 5 kt, becoming N after midnight.
Waves 1 foot or less.
.THU...NE winds around 5 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. Waves 1 foot or less.
.FRI NIGHT...W 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.

$$

ANZ236-211800-
Narragansett Bay-
116 AM EDT Mon May 21 2018

.REST OF TONIGHT...N winds around 5 kt. Waves 2 to 3 ft.
.MON...N winds around 5 kt, becoming S 10 to 15 kt in the
afternoon. Waves 2 to 3 ft.
.MON NIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt
after midnight. Waves 2 to 3 ft.
.TUE...S winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.TUE NIGHT...S winds 5 to 10 kt, becoming SW after midnight.
Waves around 2 ft. A chance of showers.
.WED...W winds 5 to 10 kt. Waves 2 to 3 ft.
.WED NIGHT...W winds 5 to 10 kt, becoming N after midnight. Waves
2 to 3 ft.
.THU...E winds around 5 kt. Waves 2 to 3 ft.
.THU NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.FRI...SW winds 5 to 10 kt. Waves around 2 ft.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 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.

$$

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