Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 161421
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1021 AM EDT Wed May 16 2018

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

ANZ200-170315-
1021 AM EDT Wed May 16 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front will linger S of the waters this afternoon. Another
round of showers should arrive later today into tonight, mainly
across the srn coastal waters. Drier weather moves back over the
waters Thu. More showers possible Fri into 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.

$$

ANZ250-170315-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...E winds 10 to 15 kt. Gusts up to 20 kt. Seas
3 to 4 ft. A slight chance of showers.
.TONIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas
2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.THU...NW winds around 5 kt, becoming S in the afternoon. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...SE winds 5 to 10 kt, becoming NE 15 to 20 kt with
gusts up to 30 kt after midnight. Seas 2 to 3 ft.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft. Showers.
.SAT NIGHT...S winds 5 to 10 kt. Seas 4 to 6 ft. Showers likely.
.SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.SUN 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.

$$

ANZ251-170315-
Massachusetts Bay and Ipswich Bay-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...NE winds 10 to 15 kt, becoming E 5 to 10 kt.
Seas 2 to 3 ft. A slight chance of showers.
.TONIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby
1 to 3 NM.
.THU...NW winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...SE winds around 5 kt, becoming NE 15 to 20 kt with
gusts up to 30 kt after midnight. Seas 2 to 3 ft.
.FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.FRI NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 2 to 4 ft. A chance of showers.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers.
.SAT NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. Showers likely.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN 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.

$$

ANZ231-170315-
Cape Cod Bay-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...E winds 10 to 15 kt. Gusts up to 20 kt. Seas
around 2 ft. Patchy fog. A chance of showers.
.TONIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas around 2 ft. Patchy fog. Showers likely. Vsby 1 NM
or less.
.THU...N winds around 5 kt, becoming SW in the afternoon. Seas
1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...S winds around 5 kt, becoming NE with gusts up to
20 kt after midnight. Seas around 2 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers likely.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Showers.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely.
.SUN...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.SUN NIGHT...SW 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.

$$

ANZ254-170315-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1021 AM EDT Wed May 16 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.THIS AFTERNOON...E winds 10 to 15 kt. Gusts up to 20 kt. Seas
3 to 5 ft. Patchy fog. A chance of showers.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog.
Showers likely. Vsby 1 NM or less.
.THU...N winds around 5 kt, becoming W around 5 kt in the
afternoon. Seas 2 to 4 ft. Patchy fog. A chance of showers. Vsby
1 NM or less.
.THU NIGHT...S winds around 5 kt, becoming NE after midnight.
Seas 2 to 4 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. A chance of showers.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Showers likely.
.SAT...E winds 15 to 20 kt. Seas 4 to 6 ft. Showers likely.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Showers.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.SUN 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.

$$

ANZ255-170315-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1021 AM EDT Wed May 16 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

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

$$

ANZ256-170315-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1021 AM EDT Wed May 16 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. Patchy
fog. A slight chance of showers. Showers. Vsby 1 NM or less.
.TONIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Patchy fog.
Showers. Vsby 1 NM or less.
.THU...N winds around 5 kt, becoming W around 5 kt in the
afternoon. Seas 3 to 4 ft. Patchy fog. A chance of showers. Vsby
1 to 3 NM.
.THU NIGHT...S winds around 5 kt, becoming NE after midnight.
Seas 3 to 5 ft. A chance of showers. Vsby 1 to 3 NM.
.FRI...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft. Showers likely.
.FRI NIGHT...E winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 7 ft. Showers likely. Vsby 1 to 3 NM.
.SAT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
7 ft. Showers. Vsby 1 to 3 NM.
.SAT NIGHT...S winds around 10 kt. Seas 4 to 6 ft. Showers.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft. A chance of showers.
.SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 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.

$$

ANZ232-170315-
Nantucket Sound-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...E winds 10 to 15 kt. Gusts up to 20 kt. Seas
2 to 3 ft. Patchy fog. Showers. Vsby 1 NM or less.
.TONIGHT...E winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas around 2 ft. Patchy fog. Showers. Vsby 1 NM or
less.
.THU...N winds around 5 kt, becoming SW in the afternoon. Seas
around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...S winds around 5 kt, becoming NE after midnight.
Seas around 2 ft. A chance of showers. Vsby 1 to 3 NM.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers likely.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
.SUN...SW winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers.
.SUN 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.

$$

ANZ233-170315-
Vineyard Sound-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 2 to 3 ft. Patchy
fog. Showers. Vsby 1 to 3 NM.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog.
Showers. Vsby 1 NM or less.
.THU...N winds around 5 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...SW winds around 5 kt, becoming NE after midnight.
Seas 2 to 3 ft. A chance of showers.
.FRI...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Showers likely.
.FRI NIGHT...NE winds 10 to 15 kt, becoming E 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Showers likely.
.SAT...E winds 15 to 20 kt. Seas 2 to 3 ft. Showers.
.SAT NIGHT...S winds around 10 kt. Seas 2 to 3 ft. Showers
likely.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
.SUN 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.

$$

ANZ234-170315-
Buzzards Bay-
1021 AM EDT Wed May 16 2018

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

$$

ANZ235-170315-
Rhode Island Sound-
1021 AM EDT Wed May 16 2018

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

$$

ANZ237-170315-
Block Island Sound-
1021 AM EDT Wed May 16 2018

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

$$

ANZ230-170315-
Boston Harbor-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...E winds 10 to 15 kt. Waves around 2 ft. A
slight chance of showers.
.TONIGHT...NE winds around 5 kt. Waves 1 foot or less. Patchy
fog. A chance of showers. Vsby 1 to 3 NM.
.THU...NW winds around 5 kt, becoming SE in the afternoon. Waves
1 foot or less. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...SE winds around 5 kt, becoming NE 10 to 15 kt with
gusts up to 25 kt after midnight. Waves 2 to 3 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.FRI NIGHT...E winds around 10 kt. Waves 2 to 3 ft. Showers
likely.
.SAT...E winds 5 to 10 kt. Waves 2 to 3 ft. Showers.
.SAT NIGHT...SE winds around 5 kt. Waves 1 foot or less, except
2 to 4 ft at the outer harbor entrance. Showers likely.
.SUN...SW winds around 5 kt. Waves 1 foot or less. A chance of
showers.
.SUN 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.

$$

ANZ236-170315-
Narragansett Bay-
1021 AM EDT Wed May 16 2018

.THIS AFTERNOON...E winds 10 to 15 kt, diminishing to 5 to 10 kt.
Waves around 2 ft. Patchy fog. Showers. Vsby 1 to 3 NM.
.TONIGHT...NE winds 5 to 10 kt. Waves around 2 ft. Patchy fog.
Showers. Vsby 1 to 3 NM.
.THU...N winds around 5 kt, becoming SW in the afternoon. Waves
around 2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.THU NIGHT...S winds around 5 kt, becoming NE with gusts up to
20 kt after midnight. Waves 2 to 3 ft.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.FRI NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt
after midnight. Waves 2 to 3 ft. Showers likely.
.SAT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. Showers.
.SAT NIGHT...S winds 5 to 10 kt. Waves 2 to 3 ft. Showers likely.
.SUN...SW winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers.
.SUN NIGHT...W winds 5 to 10 kt. Waves 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.

$$

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