Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 201916
CWFBOX

Coastal Waters Forecast
National Weather Service Taunton MA
316 PM EDT Thu Jul 20 2017

COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT TO
25 NM

ANZ200-210830-
316 PM EDT Thu Jul 20 2017

.Synopsis for Massachusetts and Rhode Island coastal waters...
A weak cold front will cross the waters late tonight into Fri
before washing out. High pressure will move overhead on Saturday.
Approaching warm front on Sunday with a coastal low pressure system
moving through the waters on Monday and Tuesday. High pressure
builds over the waters from the west on Wednesday.

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.

$$

ANZ250-210830-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 3 ft. A chance of showers and tstms this evening.
.FRI...W winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt, becoming NW after midnight.
Seas around 2 ft.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt in the
afternoon. Seas around 2 ft.
.SAT NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 2 ft. A chance of showers.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 30 kt. Seas 3 to
5 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds around 10 kt with gusts up to 30 kt. Seas
5 to 8 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.

$$

ANZ251-210830-
Massachusetts Bay and Ipswich Bay-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers and tstms this evening.
.FRI...W winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less.
.FRI NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas
1 foot or less.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt in the
afternoon. Seas 1 foot or less.
.SAT NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less. A chance of showers.
.SUN...NE winds around 5 kt, becoming E in the afternoon. Seas
2 to 3 ft. A chance of showers.
.SUN NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 30 kt. Seas 2 to
4 ft. A chance of showers.
.TUE NIGHT...N winds 5 to 10 kt with gusts up to 30 kt. Seas 3 to
5 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.

$$

ANZ231-210830-
Cape Cod Bay-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt, becoming W 5 to 10 kt after
midnight. Seas 1 foot or less. A slight chance of showers and
tstms.
.FRI...SW winds 5 to 10 kt. Seas 1 foot or less.
.FRI NIGHT...SW winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Seas 1 foot or less.
.SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas
1 foot or less.
.SAT NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt,
diminishing to around 5 kt after midnight. Seas 1 foot or less. A
chance of showers.
.SUN...N winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less. A chance of showers.
.SUN NIGHT...E winds around 5 kt. Seas 1 foot or less. Showers
likely. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.MON NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds 5 to 10 kt with gusts up to 25 kt. Seas 3 to
5 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.

$$

ANZ254-210830-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM
or less.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW after midnight. Seas 2 to 4 ft. Patchy fog. Vsby 1 NM
or less.
.SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds around 10 kt with gusts up to 30 kt. Seas
4 to 7 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.

$$

ANZ255-210830-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Patchy fog. A slight chance of showers and tstms. Vsby 1 NM
or less.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft.
.FRI NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Patchy fog. Vsby 1 to 3 NM.
.SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers.
.MON...N winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds around 10 kt with gusts up to 25 kt. Seas
4 to 6 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.

$$

ANZ256-210830-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers and tstms this evening. A slight chance
of showers and tstms after midnight. Patchy fog after midnight.
Vsby 1 to 3 NM.
.FRI...W winds 5 to 10 kt, becoming SW 15 to 20 kt in the
afternoon. Seas 2 to 4 ft.
.FRI NIGHT...SW winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Seas 2 to 4 ft.
.SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.SUN NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
showers. Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 4 to
6 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...NE winds around 10 kt with gusts up to 20 kt. Seas
4 to 6 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.

$$

ANZ232-210830-
Nantucket Sound-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt. Seas around 2 ft. A slight
chance of showers and tstms. Patchy fog after midnight. Vsby 1 NM
or less.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas
1 foot or less.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers.
.SUN...E winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.SUN NIGHT...SE winds around 5 kt. Seas around 2 ft. Showers
likely. Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds 5 to 10 kt with gusts up to 25 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.

$$

ANZ233-210830-
Vineyard Sound-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt this evening.
Seas around 2 ft. A chance of showers and tstms this evening. A
slight chance of showers and tstms after midnight. Vsby 1 to 3 NM
this evening.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW 5 to 10 kt after midnight. Seas around 2 ft.
.SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas
1 foot or less.
.SAT NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.SUN...E winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. A chance of showers.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely.
Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds around 10 kt with gusts up to 25 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.

$$

ANZ234-210830-
Buzzards Bay-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers and tstms, mainly this evening.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas around 2 ft.
.SAT...NW winds around 5 kt, becoming SW in the afternoon. Seas
1 foot or less.
.SAT NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas
1 foot or less. A chance of showers.
.SUN...NE winds 5 to 10 kt, becoming SE in the afternoon. Seas
1 foot or less. A chance of showers.
.SUN NIGHT...E winds around 5 kt. Seas around 2 ft. Showers
likely with a chance of tstms. Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 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.

$$

ANZ235-210830-
Rhode Island Sound-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers and tstms, mainly this evening with
vsby 1 to 3 NM.
.FRI...W winds 5 to 10 kt, becoming SW 15 to 20 kt in the
afternoon. Seas 2 to 3 ft.
.FRI NIGHT...SW winds 15 to 20 kt, becoming NW 5 to 10 kt after
midnight. Seas 2 to 3 ft.
.SAT...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SUN...SE winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of
showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to
4 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE NIGHT...NE winds 5 to 10 kt with gusts up to 20 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.

$$

ANZ237-210830-
Block Island Sound-
316 PM EDT Thu Jul 20 2017

.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers and tstms.
.FRI...W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.SAT...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
around 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.
.SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely
with a chance of tstms. Vsby 1 to 3 NM.
.MON...NE winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers.
.MON NIGHT...E winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.TUE NIGHT...NE winds 5 to 10 kt with gusts up to 20 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.

$$

ANZ230-210830-
Boston Harbor-
316 PM EDT Thu Jul 20 2017

.TONIGHT...W winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers and tstms, mainly this evening.
.FRI...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
1 foot or less.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt in the
afternoon. Seas 1 foot or less.
.SAT NIGHT...SW winds 5 to 10 kt, becoming NW after midnight.
Seas 1 foot or less. A chance of showers.
.SUN...E winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.SUN NIGHT...NE winds around 5 kt. Seas 1 foot or less. Showers
likely.
.MON...NE winds around 5 kt. Seas 1 foot or less. A chance of
showers.
.MON NIGHT...NE winds around 5 kt. Seas 1 foot or less. A chance
of showers. Vsby 1 to 3 NM.
.TUE...NE winds around 5 kt with gusts up to 25 kt. Seas around
2 ft. A chance of showers.
.TUE NIGHT...N 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.

$$

ANZ236-210830-
Narragansett Bay-
316 PM EDT Thu Jul 20 2017

.TONIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
1 foot or less. A chance of showers and tstms, mainly this
evening.
.FRI...W winds around 5 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.SAT...W winds around 5 kt, becoming S in the afternoon. Seas
1 foot or less.
.SAT NIGHT...SW winds 5 to 10 kt, becoming S after midnight. Seas
1 foot or less. A chance of showers.
.SUN...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less. A chance of showers.
.SUN NIGHT...E winds around 5 kt. Seas 1 foot or less. Showers
likely with a chance of tstms. Vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt. Seas 1 foot or less. A chance of
showers.
.MON NIGHT...NE winds around 5 kt. Seas 1 foot or less. A chance
of showers. Vsby 1 to 3 NM.
.TUE...NE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 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.

$$

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