Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 171817
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
217 PM EDT Fri Aug 17 2018

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

ANZ200-180715-
217 PM EDT Fri Aug 17 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A frontal boundry will lift across the waters this afternoon. Low
pres will move across northern New England Saturday, dragging its
associated cold front across the waters. High pres will follow,
building over northern New England and Nova Scotia on Sun and Mon.
The high will retreat NE on Tue.

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.

$$

ANZ250-180715-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers. Vsby 1 to 3 NM.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 to 3 NM.
.SAT NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Areas of fog. A chance of showers and tstms. Some
tstms may produce heavy rainfall. Vsby 1 NM or less.
.SUN...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 4 to 5 ft. A chance of showers.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...E winds 5 to 10 kt. Seas around 4 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. 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.

$$

ANZ251-180715-
Massachusetts Bay and Ipswich Bay-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...SE winds 5 to 10 kt. Seas around 2 ft. A slight
chance of showers with isolated tstms. Some tstms may produce
gusty winds and heavy rainfall.
.TONIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Areas of fog. Showers
likely with a chance of tstms. Some tstms may produce heavy
rainfall. Vsby 1 to 3 NM.
.SAT NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Areas of fog. A chance of showers and tstms. Some
tstms may produce heavy rainfall. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.SUN NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Gusts up to 20 kt. Seas 3 to 5 ft. A chance of
showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. 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.

$$

ANZ231-180715-
Cape Cod Bay-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...SE winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.SAT...SW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas 1 foot or less. Areas of fog. A chance of showers.
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 4 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE...E winds around 5 kt. Seas around 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. 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.

$$

ANZ254-180715-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft. Areas of fog. A
chance of showers. Vsby 1 NM or less.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Areas of fog. A chance of showers. Vsby 1 NM or less.
.SAT NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 3 to 5 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.TUE...NE winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 4 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.

$$

ANZ255-180715-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
217 PM EDT Fri Aug 17 2018

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

$$

ANZ256-180715-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
217 PM EDT Fri Aug 17 2018

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

$$

ANZ232-180715-
Nantucket Sound-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas around 2 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy
fog. A chance of showers. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. 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.

$$

ANZ233-180715-
Vineyard Sound-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 5 to 10 kt, becoming N 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 to 3 NM.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...E winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas around 2 ft. 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.

$$

ANZ234-180715-
Buzzards Bay-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Seas 1 foot or less.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers.
.SAT NIGHT...W winds 5 to 10 kt, becoming NE 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 to 3 NM.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Areas of fog. A chance of showers.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas around 2 ft. A
chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
.TUE...E winds 5 to 10 kt. Seas 1 foot or less.
.TUE NIGHT...S winds 5 to 10 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.

$$

ANZ235-180715-
Rhode Island Sound-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 10 to 15 kt, becoming N after midnight.
Gusts up to 25 kt. Seas around 3 ft. Areas of fog. Showers likely
with a chance of tstms. Some tstms may produce heavy rainfall.
Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Areas of fog. A chance of showers.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...S winds 10 to 15 kt. Seas around 2 ft. 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.

$$

ANZ237-180715-
Block Island Sound-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...SW winds around 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Areas of fog. A chance of showers.
.SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SAT NIGHT...W winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 NM or less.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Areas of fog. A chance of showers. Vsby 1 to 3 NM.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. 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.

$$

ANZ230-180715-
Boston Harbor-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...E winds around 5 kt. Waves 1 foot or less. A
chance of showers with a slight chance of tstms. Some tstms may
produce gusty winds and heavy rainfall.
.TONIGHT...S winds around 5 kt. Waves 1 foot or less. A chance of
showers.
.SAT...SW winds around 5 kt. Waves 1 foot or less. Areas of fog.
Showers likely with a chance of tstms. Some tstms may produce
heavy rainfall. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Waves 2 to 3 ft. Areas of fog. Showers likely with a
chance of tstms. Some tstms may produce heavy rainfall.
.SUN...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.MON...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.MON NIGHT...NE winds around 5 kt. Waves 1 foot or less, except
2 to 4 ft at the outer harbor entrance.
.TUE...E winds around 5 kt. Waves 1 foot or less.
.TUE NIGHT...S winds around 5 kt. Waves 1 foot or less. A chance
of showers.

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.

$$

ANZ236-180715-
Narragansett Bay-
217 PM EDT Fri Aug 17 2018

.REST OF TODAY...S winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt after midnight.
Waves 2 to 3 ft. A chance of showers.
.SAT...SW winds 5 to 10 kt. Waves 2 to 3 ft. Areas of fog. A
chance of showers.
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE with gusts up to
20 kt after midnight. Waves 2 to 3 ft. Areas of fog. Showers
likely with a chance of tstms. Some tstms may produce heavy
rainfall.
.SUN...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves 2 to 3 ft. A chance of showers.
.MON...NE winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE...E winds around 5 kt. Waves around 2 ft.
.TUE NIGHT...S winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.

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.

$$

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