Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 190245
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1045 PM EDT Sat Aug 18 2018

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

ANZ200-191515-
1045 PM EDT Sat Aug 18 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front will sweep across the waters overnight then will
stall across the southern waters through Mon, with weak waves of
low pres moving along it. The low pres waves will cause NE winds
up to 25 kt at times especially across the southern waters.
Meanwhile, high pres will build N of the waters through Tue. Low
pres with its attendant fronts will approach from the west on Wed
then head offshore Wed night. Dry high pres will build in from the
W on Thu.

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.

$$

ANZ250-191515-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY EVENING...

.OVERNIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. A slight chance of showers with isolated tstms.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.MON...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 3 to 5 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE...E winds 5 to 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Showers likely with a chance of tstms.
.WED NIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...W 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.

$$

ANZ251-191515-
Massachusetts Bay and Ipswich Bay-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY EVENING...

.OVERNIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt.
Gusts up to 25 kt. Seas 2 to 4 ft.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft.
.SUN NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.
.MON...NE winds 5 to 10 kt. Gusts up to 20 kt in the morning.
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 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.WED...S winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely with a
chance of tstms.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...NW winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...W winds around 5 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.

$$

ANZ231-191515-
Cape Cod Bay-
1045 PM EDT Sat Aug 18 2018

.OVERNIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Patchy fog. A slight chance of showers with isolated
tstms.
.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 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas around 2 ft.
.TUE...E winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Showers likely with a chance of tstms.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...NW winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...W 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.

$$

ANZ254-191515-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE SUNDAY NIGHT...

.OVERNIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. A slight chance of tstms. A chance of showers, then a
slight chance of showers. Patchy fog. 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 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 4 to
6 ft.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 4 to 6 ft.
.TUE...E winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers and tstms.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.
.THU...NW winds 5 to 10 kt. Seas 4 to 6 ft.
.THU NIGHT...NW winds around 5 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.

$$

ANZ255-191515-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT SUNDAY THROUGH
LATE SUNDAY NIGHT...

.OVERNIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts up to 25 kt. Seas 2 to 4 ft. Showers likely with a chance
of tstms, then a chance of showers with a slight chance of tstms.
Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. 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 4 to
6 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft.
.TUE...NE winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers and tstms.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Showers and tstms likely.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 ft.
.THU...NW winds 5 to 10 kt. Seas 4 to 6 ft.
.THU NIGHT...NW 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.

$$

ANZ256-191515-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT SUNDAY THROUGH
LATE SUNDAY NIGHT...

.OVERNIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt with
gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers with a
slight chance of tstms.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. A chance of showers.
.SUN NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas 4 to 6 ft. A chance of
showers.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft.
.TUE...E winds around 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 3 to 4 ft. A chance of
showers and tstms.
.WED...S winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers
and tstms.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 ft.
.THU...NW winds 5 to 10 kt. Seas 4 to 6 ft.
.THU NIGHT...NW winds 5 to 10 kt. Seas 3 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.

$$

ANZ232-191515-
Nantucket Sound-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
SUNDAY MORNING...

.OVERNIGHT...NE winds around 5 kt, increasing to 10 to 15 kt with
gusts up to 20 kt. Seas 2 to 3 ft. A slight chance of tstms. A
chance of showers, then a slight chance of showers.
.SUN...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. 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
4 ft. A chance of showers.
.MON 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.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers and tstms.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...W winds around 5 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.

$$

ANZ233-191515-
Vineyard Sound-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
SUNDAY AFTERNOON...

.OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance
of tstms, then a chance of showers with a slight chance of tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. 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,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.TUE...E winds 5 to 10 kt. Seas around 2 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Showers and tstms likely.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...NW 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.

$$

ANZ234-191515-
Buzzards Bay-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT SUNDAY THROUGH
SUNDAY AFTERNOON...

.OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt. Seas 2 to 3 ft. Showers likely with a chance
of tstms, then a slight chance of showers with isolated tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 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 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.
.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...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Showers and tstms likely.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...NW winds around 5 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.

$$

ANZ235-191515-
Rhode Island Sound-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT SUNDAY THROUGH
SUNDAY EVENING...

.OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 25 kt. Seas 2 to 3 ft. Showers likely with a chance
of tstms, then a slight chance of showers with isolated tstms.
.SUN...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 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.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt, becoming S 10 to 15 kt after
midnight. Seas 2 to 3 ft. A chance of showers and tstms.
.WED...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers and tstms.
.WED NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.THU...NW winds 5 to 10 kt. Seas 3 to 5 ft.
.THU NIGHT...NW 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.

$$

ANZ237-191515-
Block Island Sound-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT SUNDAY THROUGH
SUNDAY EVENING...

.OVERNIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 25 kt. Seas 2 to 3 ft. A slight chance of tstms. A
chance of showers, then a slight chance of showers.
.SUN...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 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.
.MON NIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft.
.TUE...E winds 5 to 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers and tstms.
.WED NIGHT...NW winds around 10 kt. Seas 3 to 5 ft.
.THU...NW winds 5 to 10 kt. Seas 2 to 4 ft.
.THU NIGHT...NW winds around 5 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.

$$

ANZ230-191515-
Boston Harbor-
1045 PM EDT Sat Aug 18 2018

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY...

.OVERNIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Waves
2 to 3 ft.
.SUN...NE winds 15 to 20 kt. Waves 2 to 3 ft.
.SUN NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Waves 2 to 3 ft.
.MON...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.MON NIGHT...NE winds around 5 kt. Waves 1 foot or less.
.TUE...E winds around 5 kt. Waves 1 foot or less.
.TUE NIGHT...SE winds around 5 kt. Waves 1 foot or less. A chance
of showers.
.WED...S winds 5 to 10 kt. Waves around 2 ft. Showers and tstms
likely.
.WED NIGHT...W winds around 5 kt. Waves 1 foot or less.
.THU...NW winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...NW 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.

$$

ANZ236-191515-
Narragansett Bay-
1045 PM EDT Sat Aug 18 2018

.OVERNIGHT...NE winds around 5 kt, increasing to 10 to 15 kt with
gusts up to 20 kt. Waves around 2 ft. A chance of showers with a
slight chance of tstms.
.SUN...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt with gusts up to 20 kt. Waves
around 2 ft.
.MON...NE winds around 10 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.MON NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE...E winds 5 to 10 kt. Waves around 2 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. A chance of
showers.
.WED...S winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers and tstms.
.WED NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft.
.THU...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.THU NIGHT...NW winds around 5 kt. Waves around 2 ft.

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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