Coastal Waters Forecast
Issued by NWS Boston, MA

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FZUS51 KBOX 210042
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
842 PM EDT Sat Oct 20 2018

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

ANZ200-211315-
842 PM EDT Sat Oct 20 2018

.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong cold front will push across the waters overnight followed
by gusty northwest winds into Sun. A ridge of high pres will
build south of the waters Sun night into Mon. Low pres will then
track across northern New England Tue, dragging a cold front
across the waters Tue night. High pres will build E from the Great
Lakes Wed and 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.

$$

ANZ250-211315-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.OVERNIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt. Gusts
up to 20 kt. Seas around 3 ft. Showers.
.SUN...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to
8 ft. Showers likely, mainly in the morning.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 35 kt. Seas 7 to 8 ft.
.MON...NW winds 15 to 20 kt, becoming W 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 5 ft.
.MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft.
.TUE...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft. A chance of showers in the evening.
.WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 4 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 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.

$$

ANZ251-211315-
Massachusetts Bay and Ipswich Bay-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.OVERNIGHT...W winds 5 to 10 kt, becoming NW 10 to 15 kt. Gusts
up to 20 kt. Seas around 2 ft. Showers.
.SUN...N winds 15 to 20 kt, becoming NW 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 5 ft. Showers likely in
the morning.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas 4 to 5 ft. Patchy frost
after midnight.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft. Patchy frost in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.TUE...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 1 foot or less. A chance of showers.
.TUE NIGHT...W winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Gusts up to 20 kt. Seas around 2 ft.
.WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.THU...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 2 to 3 ft.
.THU NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas around 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.

$$

ANZ231-211315-
Cape Cod Bay-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
AFTERNOON...

.OVERNIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Showers
likely.
.SUN...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around
5 ft. Showers, mainly in the morning.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas around 5 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
4 ft, subsiding to 2 ft in the afternoon. Patchy frost in the
morning.
.MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft in the evening, then 1 foot or less.
.TUE...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 1 foot or less, then around 2 ft in the afternoon. A chance
of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 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.

$$

ANZ254-211315-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.OVERNIGHT...W winds 5 to 10 kt. Seas 4 to 5 ft. A chance of
showers.
.SUN...N winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to
9 ft. Showers, mainly in the morning with vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas 8 to 9 ft.
.MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to
6 ft.
.MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. A chance of
showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 5 ft.
.WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas around 4 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 5 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to
6 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 7 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.

$$

ANZ255-211315-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.OVERNIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt. Seas
around 6 ft. Showers likely.
.SUN...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around
8 ft. Showers, mainly in the morning with vsby 1 to 3 NM.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas 7 to 8 ft.
.MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas around
6 ft, subsiding to 4 ft in the afternoon.
.MON NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 4 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 5 to
6 ft. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
5 to 6 ft.
.WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas around 5 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 4 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 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.

$$

ANZ256-211315-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.OVERNIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt. Seas
around 6 ft. Showers.
.SUN...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around
8 ft. Showers, mainly in the morning.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Gusts up to 30 kt. Seas 6 to 7 ft.
.MON...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 4 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 30 kt. Seas 5 to
6 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
5 to 6 ft.
.WED...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around
4 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 4 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 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.

$$

ANZ232-211315-
Nantucket Sound-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
AFTERNOON...

.OVERNIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Showers
likely.
.SUN...NW winds 20 to 25 kt with gusts up to 35 kt. Seas around
4 ft. Showers likely, mainly in the morning with vsby 1 to 3 NM.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
around 4 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas around 2 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around
3 ft. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft.
.WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 2 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around
3 ft.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 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.

$$

ANZ233-211315-
Vineyard Sound-
842 PM EDT Sat Oct 20 2018

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

.OVERNIGHT...NW winds 5 to 10 kt. Seas around 4 ft. Showers.
.SUN...NW winds 20 to 25 kt with gusts up to 30 kt. Seas around
3 ft. Showers, mainly in the morning.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
around 3 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas around 2 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft.
.WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 2 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around
2 ft.
.THU NIGHT...NW winds around 15 kt with gusts up to 25 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.

$$

ANZ234-211315-
Buzzards Bay-
842 PM EDT Sat Oct 20 2018

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

.OVERNIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Showers.
.SUN...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around
3 ft. Showers, mainly in the morning.
.SUN NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Seas around 3 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Patchy frost in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft.
.TUE...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 4 ft
in the afternoon. A chance of showers.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft.
.WED...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft.
.THU...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 25 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.

$$

ANZ235-211315-
Rhode Island Sound-
842 PM EDT Sat Oct 20 2018

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
AFTERNOON...

.OVERNIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt. Seas
around 5 ft. Showers.
.SUN...NW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to
6 ft. Showers, mainly in the morning.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas around
3 ft.
.MON NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 3 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around
4 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft.
.WED...NW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas around 3 ft.
.WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft.
.THU...NW winds 15 to 20 kt with gusts up to 25 kt. Seas around
2 ft.
.THU NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 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.

$$

ANZ237-211315-
Block Island Sound-
842 PM EDT Sat Oct 20 2018

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

.OVERNIGHT...NW winds 5 to 10 kt. Seas 4 to 5 ft. Showers.
.SUN...N winds 20 to 25 kt, becoming NW 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas around 5 ft. Showers likely in
the morning.
.SUN NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Seas 4 to 5 ft.
.MON...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas around
4 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft.
.WED...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around
3 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.THU...NW winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft.
.THU NIGHT...NW 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.

$$

ANZ230-211315-
Boston Harbor-
842 PM EDT Sat Oct 20 2018

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT SUNDAY THROUGH
SUNDAY EVENING...

.OVERNIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. Showers.
.SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around
2 ft. Showers in the morning.
.SUN NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 25 kt. Waves around 2 ft. Patchy
frost after midnight.
.MON...W winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. Patchy frost in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft in the evening, then 1 foot or less.
.TUE...SW winds around 5 kt. Waves 1 foot or less. A chance of
showers.
.TUE NIGHT...W winds 5 to 10 kt. Waves 1 foot or less.
.WED...NW winds around 10 kt with gusts up to 20 kt. Waves 1 foot
or less.
.WED NIGHT...NW winds around 10 kt with gusts up to 20 kt. Waves
1 foot or less.
.THU...NW winds around 10 kt with gusts up to 20 kt. Waves 1 foot
or less, then around 2 ft in the afternoon.
.THU NIGHT...NW winds around 10 kt. Gusts up to 20 kt in the
evening. Waves 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.

$$

ANZ236-211315-
Narragansett Bay-
842 PM EDT Sat Oct 20 2018

.OVERNIGHT...NW winds 5 to 10 kt. Waves around 3 ft. Showers.
.SUN...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around
3 ft. Showers in the morning.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft. Patchy frost after midnight.
.MON...W winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or
less, then around 2 ft in the afternoon. Patchy frost in the
morning.
.MON NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft.
.TUE...SW winds 5 to 10 kt with gusts up to 25 kt. Waves around
2 ft. A chance of showers.
.TUE NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves
around 2 ft.
.WED...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft.
.WED NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.THU...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft in the morning, then 1 foot or less.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft in the evening, then 1 foot or less.

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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