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National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 171406
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
1006 AM EDT Tue Jul 17 2018

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

ANZ200-180315-
1006 AM EDT Tue Jul 17 2018

Synopsis for Massachusetts and Rhode Island coastal waters

A cold front will approach from the west late this afternoon and
move across the waters late tonight into early Wed, while weak low
pressure develops along the front south of Nantucket. High pres
will follow for Thu and Fri. High pres will move east of the  waters
Fri night and Sat.     

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.


ANZ250-180315-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING


THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft. A chance of showers with a slight chance of
tstms. Some tstms may produce gusty winds, heavy rainfall, and
frequent lightning.

TONIGHT
S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.

WED
N winds 5 to 10 kt. Gusts up to 20 kt in the morning. Seas
2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.

WED NIGHT
N winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas 2 to 4 ft.

THU
NE winds 5 to 10 kt. Seas 2 to 4 ft.

THU NIGHT
S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft.

FRI
SW winds 5 to 10 kt. Seas 2 to 3 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas around 2 ft.

SAT
S winds 5 to 10 kt. Seas around 2 ft.

SAT NIGHT
SE 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.


ANZ251-180315-
Massachusetts Bay and Ipswich Bay-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
S winds 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. Some tstms may produce gusty winds, heavy rainfall, and
frequent lightning.

TONIGHT
SW winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers. Vsby 1 NM or less.

WED
N winds 5 to 10 kt. Seas 2 to 3 ft.

WED NIGHT
N winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas around 2 ft.

THU
N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft.

THU NIGHT
S winds around 5 kt, becoming SW around 5 kt after
midnight. Seas around 2 ft.

FRI
SW winds 5 to 10 kt. Seas around 2 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas around 2 ft.

SAT
SE winds 5 to 10 kt. Seas 1 foot or less.

SAT NIGHT
SE 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.


ANZ231-180315-
Cape Cod Bay-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft.

TONIGHT
S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas around 2 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.

WED
N winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.

WED NIGHT
N winds around 5 kt, increasing to 5 to 10 kt after
midnight. Seas around 2 ft.

THU
NE winds 5 to 10 kt. Seas around 2 ft.

THU NIGHT
SE winds around 5 kt, becoming SW around 5 kt after
midnight. Seas around 2 ft.

FRI
SW winds 5 to 10 kt. Seas 1 foot or less.

FRI NIGHT
S winds 5 to 10 kt. Seas 1 foot or less.

SAT
SE winds 5 to 10 kt. Seas 1 foot or less.

SAT NIGHT
SE winds 5 to 10 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.


ANZ254-180315-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING


THIS AFTERNOON
S winds 10 to 15 kt. Gusts up to 20 kt. Seas
3 to 5 ft. Patchy fog. Vsby 1 to 3 NM.

TONIGHT
S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.

WED
W winds 5 to 10 kt, becoming N in the afternoon. Gusts up
to 20 kt. Seas 2 to 4 ft. Patchy fog. A chance of showers and
tstms. Vsby 1 NM or less.

WED NIGHT
N winds 5 to 10 kt. Seas 3 to 5 ft.

THU
N winds 5 to 10 kt. Seas 3 to 5 ft.

THU NIGHT
E winds around 5 kt, becoming W after midnight. Seas
2 to 4 ft.

FRI
SW winds around 5 kt. Seas 2 to 4 ft.

FRI NIGHT
S winds around 5 kt. Seas 2 to 3 ft.

SAT
SE winds 5 to 10 kt. Seas 2 to 3 ft.

SAT NIGHT
SE 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.


ANZ255-180315-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING


THIS AFTERNOON
S winds around 15 kt. Seas 3 to 5 ft. Patchy
fog. Vsby 1 NM or less, increasing to 1 to 3 NM.

TONIGHT
S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.

WED
W winds 5 to 10 kt, becoming N with gusts up to 20 kt in
the afternoon. Seas 3 to 5 ft. Patchy fog. Showers likely with a
chance of tstms. Vsby 1 NM or less.

WED NIGHT
N winds 5 to 10 kt. Seas 3 to 5 ft.

THU
NE winds 5 to 10 kt. Seas 3 to 5 ft.

THU NIGHT
SE winds around 5 kt, becoming SW after midnight.
Seas 2 to 4 ft.

FRI
SW winds around 5 kt. Seas 2 to 4 ft.

FRI NIGHT
S winds around 5 kt. Seas 2 to 3 ft.

SAT
SE winds 5 to 10 kt. Seas 2 to 3 ft.

SAT NIGHT
SE winds around 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.


ANZ256-180315-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING


THIS AFTERNOON
SW winds around 15 kt with gusts up to 20 kt.
Seas around 5 ft. Patchy fog.

TONIGHT
SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Patchy
fog. Showers likely with a chance of tstms. Some tstms may
produce gusty winds and heavy rainfall. Vsby 1 NM or less.

WED
N winds 5 to 10 kt. Seas around 4 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.

WED NIGHT
NE winds around 5 kt, becoming N after midnight.
Seas 3 to 5 ft.

THU
N winds 5 to 10 kt, becoming SE in the afternoon. Seas
3 to 4 ft.

THU NIGHT
S winds around 5 kt. Seas 3 to 4 ft.

FRI
SW winds 5 to 10 kt. Seas around 3 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas around 3 ft.

SAT
SE winds 5 to 10 kt. Seas 2 to 4 ft.

SAT NIGHT
SE winds 10 to 15 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.


ANZ232-180315-
Nantucket Sound-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
SW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM.

TONIGHT
S winds 10 to 15 kt with gusts up to 20 kt, becoming
SW 5 to 10 kt after midnight. Seas 2 to 3 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.

WED
N winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Patchy fog. A chance of showers. Vsby 1 NM or less.

WED NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft.

THU
NE winds 5 to 10 kt. Seas 2 to 3 ft.

THU NIGHT
SE winds around 5 kt, becoming SW after midnight.
Seas around 2 ft.

FRI
SW winds around 5 kt. Seas around 2 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas around 2 ft.

SAT
SE winds 5 to 10 kt. Seas around 2 ft.

SAT NIGHT
SE 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.


ANZ233-180315-
Vineyard Sound-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.

TONIGHT
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. Patchy
fog. A chance of showers. Vsby 1 NM or less.

WED
N winds 5 to 10 kt. Seas around 2 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.

WED NIGHT
N winds 5 to 10 kt. Seas 2 to 3 ft.

THU
N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft.

THU NIGHT
S winds around 5 kt, becoming SW after midnight.
Seas around 2 ft.

FRI
SW winds 5 to 10 kt. Seas around 2 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas around 2 ft.

SAT
SE winds 5 to 10 kt. Seas around 2 ft.

SAT NIGHT
SE winds around 10 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.


ANZ234-180315-
Buzzards Bay-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM.

TONIGHT
SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Patchy
fog. Showers likely with a chance of tstms. Some tstms may
produce heavy rainfall. Vsby 1 NM or less.

WED
N winds 5 to 10 kt. Seas around 2 ft. Patchy fog.

WED NIGHT
N winds 5 to 10 kt. Seas around 2 ft.

THU
N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft.

THU NIGHT
S winds around 5 kt, becoming SW around 5 kt after
midnight. Seas around 2 ft.

FRI
SW winds 5 to 10 kt. Seas around 2 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas around 2 ft.

SAT
SE winds 5 to 10 kt. Seas around 2 ft.

SAT NIGHT
SE 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.


ANZ235-180315-
Rhode Island Sound-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING


THIS AFTERNOON
SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Patchy fog. Vsby 1 to 3 NM.

TONIGHT
SW winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft. Patchy
fog. A chance of showers. Vsby 1 NM or less.

WED
N winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance
of showers. Vsby 1 NM or less.

WED NIGHT
NE winds around 5 kt, becoming N after midnight.
Seas 2 to 4 ft.

THU
N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 4 ft.

THU NIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft.

FRI
SW winds 5 to 10 kt. Seas 2 to 3 ft.

FRI NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft.

SAT
SE winds 5 to 10 kt. Seas 2 to 3 ft.

SAT NIGHT
SE winds 10 to 15 kt. Seas 2 to 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.


ANZ237-180315-
Block Island Sound-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING


THIS AFTERNOON
SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft. Patchy fog.

TONIGHT
SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 3 to 5 ft. Patchy fog. A chance of showers. Vsby
1 NM or less.

WED
N winds 5 to 10 kt. Seas 2 to 4 ft. Patchy fog. A chance
of showers. Vsby 1 to 3 NM.

WED NIGHT
W winds around 5 kt, becoming N after midnight. Seas
2 to 4 ft.

THU
N winds 5 to 10 kt, becoming SE in the afternoon. Seas
2 to 4 ft.

THU NIGHT
S winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 3 ft.

FRI
SW winds 5 to 10 kt. Seas 2 to 3 ft.

FRI NIGHT
S winds around 5 kt. Seas around 2 ft.

SAT
SE winds 5 to 10 kt. Seas 2 to 3 ft.

SAT NIGHT
SE winds 5 to 10 kt. Seas 2 to 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.


ANZ230-180315-
Boston Harbor-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 25 kt.
Waves around 2 ft. Showers likely with a chance of tstms. Some
tstms may produce gusty winds, heavy rainfall, and frequent
lightning.

TONIGHT
SW winds 5 to 10 kt. Waves around 2 ft. A chance of
showers. Vsby 1 to 3 NM.

WED
N winds around 5 kt. Waves 1 foot or less.

WED NIGHT
N winds around 5 kt. Waves 1 foot or less.

THU
N winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less.

THU NIGHT
SE winds around 5 kt, becoming SW around 5 kt after
midnight. Waves 1 foot or less.

FRI
S winds around 5 kt. Waves 1 foot or less.

FRI NIGHT
S winds around 5 kt. Waves 1 foot or less.

SAT
SE winds 5 to 10 kt. Waves 1 foot or less.

SAT NIGHT
SE 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.


ANZ236-180315-
Narragansett Bay-
1006 AM EDT Tue Jul 17 2018

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING


THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 25 kt.
Waves 2 to 4 ft. Patchy fog. A slight chance of showers with
isolated tstms. Some tstms may produce heavy rainfall.

TONIGHT
SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.

WED
N winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. A chance
of showers.

WED NIGHT
N winds around 5 kt. Waves 2 to 3 ft.

THU
N winds around 5 kt, becoming SE in the afternoon. Waves
around 2 ft.

THU NIGHT
SW winds around 5 kt. Waves around 2 ft.

FRI
SW winds 5 to 10 kt. Waves around 2 ft.

FRI NIGHT
S winds around 5 kt. Waves around 2 ft.

SAT
SE winds 5 to 10 kt. Waves around 2 ft.

SAT NIGHT
SE winds 5 to 10 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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