Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 211936
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
336 PM EDT Thu Jun 21 2018

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

ANZ200-220815-
336 PM EDT Thu Jun 21 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...

High pres builds across the waters tonight and Fri. Low pres and
an associated warm front will approach late Fri night, bringing
showers Sat into Sat night. Showers may linger on Sun as a cold
front approaches. Scattered showers could persist into Mon as an
upper level disturbance moves overhead.

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.

$$

ANZ250-220815-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
336 PM EDT Thu Jun 21 2018

.TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
.FRI...E winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SUN...W winds around 5 kt, becoming S in the afternoon. Seas
2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN NIGHT...SW winds 5 to 10 kt, becoming NW with gusts up to
20 kt after midnight. Seas 2 to 4 ft.
.MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
6 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 7 ft. A chance of showers.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ251-220815-
Massachusetts Bay and Ipswich Bay-
336 PM EDT Thu Jun 21 2018

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

Winds and seas higher in and near tstms.

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.

$$

ANZ231-220815-
Cape Cod Bay-
336 PM EDT Thu Jun 21 2018

.TONIGHT...NE winds around 5 kt. Seas 1 foot or less. Areas of
fog after midnight with vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SAT...E winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.SAT NIGHT...E winds around 5 kt, becoming S after midnight. Seas
around 2 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.SUN...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby
1 to 3 NM.
.SUN NIGHT...SW winds 5 to 10 kt, becoming W with gusts up to
20 kt after midnight. Seas around 2 ft.
.MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ254-220815-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
336 PM EDT Thu Jun 21 2018

.TONIGHT...SE winds around 5 kt, becoming NE after midnight. Seas
around 2 ft. Areas of fog. Vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Areas of dense fog.
Vsby 1 NM or less.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft.
.SAT...E winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.SAT NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 3 to 5 ft. Patchy fog. Showers likely. Vsby 1 NM
or less.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
7 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
5 to 8 ft. A chance of showers.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 7 ft.
.TUE 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.

$$

ANZ255-220815-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
336 PM EDT Thu Jun 21 2018

.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog this
evening, then areas of fog after midnight. Vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Areas of dense fog.
Vsby 1 NM or less.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...E winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.SAT NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 5 ft. Patchy fog.
Showers likely. Vsby 1 NM or less.
.SUN...SW winds around 10 kt. Gusts up to 20 kt in the morning.
Seas 4 to 6 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to
7 ft.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 7 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ256-220815-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
336 PM EDT Thu Jun 21 2018

.TONIGHT...E winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. Patchy fog this evening. Areas of fog after
midnight. Vsby 1 NM or less.
.FRI...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. A chance of showers.
.SAT...E winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.SAT NIGHT...SE winds 5 to 10 kt, becoming SW 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas around 5 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...W winds around 10 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to
7 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ232-220815-
Nantucket Sound-
336 PM EDT Thu Jun 21 2018

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

$$

ANZ233-220815-
Vineyard Sound-
336 PM EDT Thu Jun 21 2018

.TONIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Areas of fog
after midnight with vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...E winds around 10 kt. Seas 1 foot or less. A chance
of showers.
.SAT...E winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas around 2 ft. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SUN...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...W winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.MON...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.TUE...W winds around 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ234-220815-
Buzzards Bay-
336 PM EDT Thu Jun 21 2018

.TONIGHT...E winds 5 to 10 kt, becoming NE after midnight. Seas
1 foot or less. Areas of fog after midnight with vsby 1 to 3 NM.
.FRI...E winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.SAT...E winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 to
3 NM.
.SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.MON...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds around 10 kt with gusts up to 20 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.

$$

ANZ235-220815-
Rhode Island Sound-
336 PM EDT Thu Jun 21 2018

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

$$

ANZ237-220815-
Block Island Sound-
336 PM EDT Thu Jun 21 2018

.TONIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Patchy fog this
evening, then areas of fog after midnight. Vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.SAT...E winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM
or less.
.SUN NIGHT...W winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft.
.MON...NW winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 4 ft.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ230-220815-
Boston Harbor-
336 PM EDT Thu Jun 21 2018

.TONIGHT...NE winds around 5 kt. Waves 1 foot or less.
.FRI...E winds around 5 kt. Waves 1 foot or less.
.FRI NIGHT...SE winds around 5 kt. Waves 1 foot or less.
.SAT...E winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A
chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...N winds around 5 kt. Waves 1 foot or less. Patchy
fog. Showers likely. Vsby 1 to 3 NM.
.SUN...W winds around 5 kt, becoming S in the afternoon. Waves
1 foot or less. Patchy fog. Showers likely with a chance of
tstms.
.SUN NIGHT...SW winds around 5 kt, becoming NW after midnight.
Waves 1 foot or less. A chance of showers.
.MON...N winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers.
.MON NIGHT...N winds around 5 kt. Waves 2 to 3 ft. A chance of
showers.
.TUE...W winds around 5 kt. Waves 1 foot or less, except 2 to
4 ft at the outer harbor entrance.
.TUE NIGHT...SW winds around 5 kt. Waves 1 foot or less.

Winds and waves higher in and near tstms.

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.

$$

ANZ236-220815-
Narragansett Bay-
336 PM EDT Thu Jun 21 2018

.TONIGHT...E winds around 5 kt, becoming NE after midnight. Waves
around 2 ft. A slight chance of showers this evening. Areas of
fog after midnight with vsby 1 NM or less.
.FRI...E winds 5 to 10 kt. Waves around 2 ft.
.FRI NIGHT...E winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.SAT...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...E winds around 5 kt, becoming S after midnight.
Waves 2 to 4 ft. Patchy fog. A chance of showers. Vsby 1 NM or
less.
.SUN...SW winds 5 to 10 kt. Waves 2 to 4 ft. Patchy fog. Vsby
1 to 3 NM.
.SUN NIGHT...W winds 5 to 10 kt. Waves 2 to 4 ft.
.MON...N winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.MON NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Waves
2 to 3 ft.
.TUE...W winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE NIGHT...SW winds 5 to 10 kt. Waves 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.

$$

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