Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 180812
CWFBOX

Coastal Waters Forecast
National Weather Service Taunton MA
412 AM EDT Tue Jul 18 2017

COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO
25 NM

ANZ200-182115-
412 AM EDT Tue Jul 18 2017

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

Weak high pressure shifts offshore, providing a light south to
southwest flow of warm humid air over the waters for much of the
week. Locally dense fog may limit visibility each night. A weak
cold front will move across the waters Thursday. A warm front will
move north of the waters by Sunday.


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.

$$

ANZ250-182115-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Isolated
showers and tstms this afternoon. Some tstms may produce heavy
rainfall this afternoon. Vsby 1 NM or less, increasing to 1 to
3 NM this afternoon.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. Vsby
1 NM or less.
.WED...SW winds 5 to 10 kt, becoming S 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.WED NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 4 ft. Patchy fog. Vsby
1 NM or less.
.THU...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Patchy fog. Vsby 1 NM or less.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...SW winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 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.

$$

ANZ251-182115-
Massachusetts Bay and Ipswich Bay-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Isolated showers and
tstms this morning, then scattered showers and tstms this
afternoon. Patchy fog this morning. Some tstms may produce heavy
rainfall. Vsby 1 NM or less, increasing to 1 to 3 NM this
afternoon.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Scattered showers
and tstms. Some tstms may produce heavy rainfall.
.WED...SW winds around 5 kt, becoming S 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.THU...W winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft.
.THU NIGHT...SW winds around 5 kt. Seas around 2 ft.
.FRI...W winds around 5 kt. Seas 1 foot or less.
.FRI NIGHT...W winds around 5 kt. Seas 1 foot or less.
.SAT...SW winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.SAT NIGHT...SW winds around 5 kt. Seas 1 foot or less.

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.

$$

ANZ231-182115-
Cape Cod Bay-
412 AM EDT Tue Jul 18 2017

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

$$

ANZ254-182115-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
412 AM EDT Tue Jul 18 2017

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

$$

ANZ255-182115-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds around 5 kt, increasing to 5 to 10 kt this
afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Seas around 3 ft. Patchy fog.
Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Areas of fog. Vsby 1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 25 kt. Seas
2 to 4 ft. Areas of fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. Vsby
1 NM or less.
.THU NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog.
Vsby 1 to 3 NM.
.FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SAT NIGHT...S winds around 5 kt. Seas 2 to 4 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.

$$

ANZ256-182115-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
412 AM EDT Tue Jul 18 2017

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

$$

ANZ232-182115-
Nantucket Sound-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog this
morning with vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Patchy fog.
Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Areas of fog. Vsby
1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Areas of fog. Vsby 1 NM or less.
.THU...SW winds 5 to 10 kt. Seas around 2 ft. Areas of fog. Vsby
1 NM or less.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft.
.FRI NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.SAT...SW winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.SAT NIGHT...S winds around 5 kt. Seas 1 foot or less. 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.

$$

ANZ233-182115-
Vineyard Sound-
412 AM EDT Tue Jul 18 2017

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

$$

ANZ234-182115-
Buzzards Bay-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds 5 to 10 kt. Seas 1 foot or less. Patchy fog this
morning with vsby 1 NM or less.
.TONIGHT...SW winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas 1 foot or less. Patchy fog. Vsby 1 NM or less.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby
1 to 3 NM.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Areas
of fog. Vsby 1 to 3 NM.
.THU...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Areas of fog. Vsby 1 to 3 NM.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft.
.FRI NIGHT...W winds 5 to 10 kt. Seas around 2 ft.
.SAT...W winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.SAT NIGHT...S winds around 5 kt. Seas 1 foot or less. 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.

$$

ANZ235-182115-
Rhode Island Sound-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds around 5 kt, increasing to 5 to 10 kt this
afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 NM or less,
increasing to 1 to 3 NM this afternoon.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Vsby
1 NM or less.
.WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Areas of fog. Vsby
1 to 3 NM.
.WED NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 4 ft. Areas of fog. Vsby 1 to 3 NM.
.THU...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Areas of fog. Vsby 1 to 3 NM.
.THU NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...W winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 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.

$$

ANZ237-182115-
Block Island Sound-
412 AM EDT Tue Jul 18 2017

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

$$

ANZ230-182115-
Boston Harbor-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds 5 to 10 kt. Seas 1 foot or less. Isolated
showers and tstms this morning, then scattered showers and tstms
this afternoon. Patchy fog this morning. Some tstms may produce
heavy rainfall. Vsby 1 to 3 NM this morning.
.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Scattered
showers and tstms. Some tstms may produce heavy rainfall.
.WED...SW winds around 5 kt, becoming SE 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft.
.WED NIGHT...SW winds 10 to 15 kt, diminishing to around 5 kt
after midnight. Seas around 2 ft.
.THU...W winds around 5 kt, becoming SE in the afternoon. Seas
1 foot or less. A chance of showers.
.THU NIGHT...S winds around 5 kt, becoming W around 5 kt after
midnight. Seas 1 foot or less. A chance of showers.
.FRI...W winds around 5 kt. Seas 1 foot or less.
.FRI NIGHT...W winds around 5 kt. Seas 1 foot or less.
.SAT...W winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.SAT NIGHT...S winds around 5 kt. Seas 1 foot or less.

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.

$$

ANZ236-182115-
Narragansett Bay-
412 AM EDT Tue Jul 18 2017

.TODAY...S winds around 5 kt, increasing to 5 to 10 kt this
afternoon. Seas 1 foot or less. Patchy fog this morning. Isolated
showers and tstms this afternoon. Some tstms may produce heavy
rainfall this afternoon. Vsby 1 NM or less this morning.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
1 foot or less. Patchy fog. Vsby 1 NM or less.
.WED...SW winds around 5 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. Vsby 1 to
3 NM.
.WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to around 5 kt after midnight. Seas 2 to 3 ft. Patchy
fog. Vsby 1 to 3 NM.
.THU...W winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Patchy fog. Vsby 1 to 3 NM.
.THU NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
1 foot or less.
.FRI...W winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft.
.FRI NIGHT...W winds around 5 kt. Seas 1 foot or less.
.SAT...W winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.SAT NIGHT...SW winds around 5 kt. Seas 1 foot or less. A chance
of showers.

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.

$$

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