Coastal Waters Forecast
Issued by NWS Boston, MA

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524
FZUS51 KBOX 171418
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1018 AM EDT Fri Aug 17 2018

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

ANZ200-180230-
1018 AM EDT Fri Aug 17 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A stalled front across the waters will push NE 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.

$$

ANZ250-180230-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas around 2 ft. A slight
chance of showers.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. A chance of showers and tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft. 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. Seas 3 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 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.

$$

ANZ251-180230-
Massachusetts Bay and Ipswich Bay-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...E winds 5 to 10 kt. Seas 1 foot or less. A
slight chance of showers.
.TONIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas around 2 ft. A chance of
showers and tstms. Some tstms may produce gusty winds and heavy
rainfall. Vsby 1 to 3 NM.
.SAT...SW winds 5 to 10 kt, becoming W in the afternoon. Seas
around 2 ft. Patchy fog. Showers likely with a chance of tstms.
Some tstms may produce gusty winds and heavy rainfall. Vsby 1 to
3 NM.
.SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. A chance of showers.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.MON...NE winds 5 to 10 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 around 5 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.

$$

ANZ231-180230-
Cape Cod Bay-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...SE winds 5 to 10 kt. Seas 1 foot or less. A
slight chance of showers.
.TONIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas around 2 ft. A chance of
showers and tstms. Some tstms may produce gusty winds and heavy
rainfall. Vsby 1 NM or less.
.SAT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 1 foot or less. Patchy fog. A chance of showers
and tstms. Some tstms may produce gusty winds and heavy rainfall.
Vsby 1 to 3 NM.
.SAT NIGHT...N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers and tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. 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 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. Seas 2 to 3 ft.
.TUE...NE 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.

$$

ANZ254-180230-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...SE winds 5 to 10 kt. Seas around 2 ft.
.TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. A chance of showers and tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Patchy fog. A chance of showers. Vsby 1 NM or less.
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers
and tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. A chance of showers.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. 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 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. 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.

$$

ANZ255-180230-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...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. Patchy fog. A chance of showers and tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.
.SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Patchy fog. A chance of showers and tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.
.SAT NIGHT...W winds 10 to 15 kt, becoming N with gusts up to
20 kt after midnight. Seas 2 to 4 ft. A chance of showers and
tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Showers likely.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft.
.MON NIGHT...N 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 10 to 15 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.

$$

ANZ256-180230-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1018 AM EDT Fri Aug 17 2018

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

$$

ANZ232-180230-
Nantucket Sound-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...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
around 2 ft. Patchy fog. A chance of showers and tstms. Some
tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or
less.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some
tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or
less.
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Showers likely.
.SUN NIGHT...NE winds around 10 kt. Gusts up to 20 kt in the
evening. 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...N 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.

$$

ANZ233-180230-
Vineyard Sound-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 1 foot or less. A
slight chance of showers and tstms. Some tstms may produce heavy
rainfall.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Patchy fog. A chance of showers and tstms. Some
tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or
less.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some
tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or
less.
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Showers likely.
.SUN NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. 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...N 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.

$$

ANZ234-180230-
Buzzards Bay-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 1 foot or less. A
slight chance of showers and tstms. Some tstms may produce heavy
rainfall.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. Patchy fog. A chance of showers and tstms. Some
tstms may produce gusty winds and heavy rainfall. Vsby 1 NM or
less.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Patchy fog. A chance of showers and tstms. Some
tstms may produce gusty winds and heavy rainfall. Vsby 1 to 3 NM.
.SAT NIGHT...NW winds 5 to 10 kt, becoming NE after midnight.
Gusts up to 20 kt. Seas around 2 ft. A chance of showers and
tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. A chance of showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. A chance of showers.
.MON NIGHT...N winds 10 to 15 kt with gusts up to 20 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.

$$

ANZ235-180230-
Rhode Island Sound-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...S winds 5 to 10 kt. Gusts up to 20 kt. Seas
around 2 ft. A slight chance of showers. A slight chance of
tstms. Some tstms may produce heavy rainfall.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Patchy fog. A chance of showers and tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.
.SAT...SW 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.
.SAT NIGHT...NW winds 10 to 15 kt, becoming NE with gusts up to
20 kt after midnight. Seas 2 to 4 ft. A chance of showers and
tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.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 4 ft.
.TUE NIGHT...S winds 10 to 15 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.

$$

ANZ237-180230-
Block Island Sound-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...S winds 5 to 10 kt. Gusts up to 20 kt. Seas
around 2 ft. A slight chance of showers. A slight chance of
tstms. Some tstms may produce heavy rainfall.
.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Patchy fog. A chance of showers and tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 NM or
less.
.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. A chance of
showers and tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers likely.
.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 2 to
4 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 4 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.

$$

ANZ230-180230-
Boston Harbor-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...E winds around 5 kt. Waves 1 foot or less. A
chance of showers.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less. A chance of
showers and tstms. Some tstms may produce gusty winds and heavy
rainfall.
.SAT...SW winds 5 to 10 kt, becoming NW in the afternoon. Waves
1 foot or less. Patchy fog. Showers likely with a chance of
tstms. Some tstms may produce gusty winds and heavy rainfall.
Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.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. A chance of showers.
.MON NIGHT...N 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, except 2 to
4 ft at the outer harbor entrance.
.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.

$$

ANZ236-180230-
Narragansett Bay-
1018 AM EDT Fri Aug 17 2018

.THIS AFTERNOON...S winds 5 to 10 kt. Waves 1 foot or less. A
slight chance of showers. A slight chance of tstms. Some tstms
may produce heavy rainfall.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves around 2 ft. Patchy fog. A chance of showers and tstms.
Some tstms may produce gusty winds and heavy rainfall. Vsby 1 NM
or less.
.SAT...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.SAT NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Waves around 2 ft. A chance of showers and tstms.
.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 around 2 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...N 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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