Coastal Waters Forecast
Issued by NWS Boston, MA

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000
FZUS51 KBOX 210516
CWFBOX

Coastal Waters Forecast
National Weather Service Boston/Norton MA
116 AM EDT Sun Jul 21 2019

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

ANZ200-211800-
116 AM EDT Sun Jul 21 2019

.Synopsis for Massachusetts and Rhode Island coastal waters...
Heat and humidity will linger across the waters overnight and
Sunday. Isolated showers and tstms may develop Sunday afternoon
into Sunday night as a frontal boundary meanders across the  waters,
then stalls near the south coast. A weak wave of low pres  moves
along the stalled front Mon into Tue, bringing showers and  tstms,
some with tropical downpours. Dry and more seasonable  conditions
return Wed and Thu complements of high pres building  over the
waters.

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.

$$

ANZ250-211800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft.
.SUN...SW winds around 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Seas around 2 ft.
.MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas
around 2 ft.
.MON NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Showers
likely with a chance of tstms. Vsby 1 to 3 NM.
.TUE...N winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Showers with tstms likely. Vsby 1 to 3 NM.
.TUE NIGHT...N winds 5 to 10 kt, becoming SW after midnight. Seas
2 to 4 ft.
.WED...SW winds around 5 kt. Seas 2 to 3 ft.
.WED NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.THU...NE winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...SW 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.

$$

ANZ251-211800-
Massachusetts Bay and Ipswich Bay-
116 AM EDT Sun Jul 21 2019

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

$$

ANZ231-211800-
Cape Cod Bay-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas 1 foot or less.
Patchy fog.
.SUN...SW winds 5 to 10 kt. Seas 1 foot or less.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less.
.MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less. A chance of showers.
.MON NIGHT...SE winds 5 to 10 kt. Seas 1 foot or less. Showers
likely with a chance of tstms. Vsby 1 to 3 NM.
.TUE...W winds 5 to 10 kt, becoming NW in the afternoon. Gusts up
to 25 kt. Seas 2 to 3 ft. Showers with tstms likely. Vsby 1 to
3 NM.
.TUE NIGHT...N winds 5 to 10 kt, becoming SE after midnight. Seas
around 2 ft.
.WED...S winds around 5 kt. Seas 1 foot or less.
.WED NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.THU...NE winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW 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.

$$

ANZ254-211800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 4 ft. Patchy fog. Vsby
1 NM or less.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Patchy fog. Vsby
1 NM or less.
.MON...N winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...S winds 5 to 10 kt. Gusts up to 25 kt after
midnight. Seas 2 to 4 ft. Showers likely with a chance of tstms.
.TUE...W winds 5 to 10 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Showers likely with a chance of tstms.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming
NE after midnight. Seas 3 to 5 ft. A chance of showers. Vsby 1 to
3 NM.
.WED...SE winds around 5 kt. Seas 2 to 4 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft.
.THU...N winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds around 5 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.

$$

ANZ255-211800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt. Seas 3 to 4 ft. Patchy
fog. Vsby 1 NM or less.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft. Patchy fog. Vsby 1 NM or less.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 4 ft. Patchy fog. A
chance of showers. Vsby 1 NM or less.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
2 to 3 ft. Showers likely with a chance of tstms.
.MON NIGHT...SE winds 5 to 10 kt, becoming SW with gusts up to
25 kt after midnight. Seas 3 to 5 ft. Showers likely with a
chance of tstms.
.TUE...W winds 10 to 15 kt with gusts up to 30 kt. Seas 4 to
7 ft. Showers with tstms likely.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming
N after midnight. Seas 4 to 7 ft. A chance of showers. Vsby 1 to
3 NM.
.WED...S winds around 5 kt. Seas 3 to 5 ft.
.WED NIGHT...SW winds around 5 kt. Seas 3 to 4 ft.
.THU...N winds around 5 kt. Seas 2 to 3 ft.
.THU NIGHT...SW winds around 5 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.

$$

ANZ256-211800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt with gusts up to 20 kt.
Seas 3 to 4 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 4 ft.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 3 to 4 ft. A chance of
showers.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
2 to 3 ft. Showers likely with a chance of tstms.
.MON NIGHT...SE winds 5 to 10 kt, becoming SW with gusts up to
20 kt after midnight. Seas 2 to 4 ft. Showers likely with a
chance of tstms.
.TUE...SW winds 10 to 15 kt, becoming NW in the afternoon. Gusts
up to 25 kt. Seas 4 to 7 ft. Showers with tstms likely.
.TUE NIGHT...N winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas 4 to 7 ft. A chance of showers. Vsby 1 to 3 NM.
.WED...W winds around 5 kt. Seas 4 to 5 ft.
.WED NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft.
.THU...E winds 5 to 10 kt. Seas around 3 ft.
.THU NIGHT...SW 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.

$$

ANZ232-211800-
Nantucket Sound-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Patchy
fog. Vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. Showers likely with a chance of tstms.
.MON NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt after
midnight. Seas 2 to 3 ft. Showers likely with a chance of tstms.
Vsby 1 to 3 NM.
.TUE...W winds 5 to 10 kt with gusts up to 25 kt. Seas 2 to 4 ft.
Showers with tstms likely. Vsby 1 to 3 NM.
.TUE NIGHT...NW winds 5 to 10 kt with gusts up to 20 kt, becoming
N after midnight. Seas 2 to 3 ft. A chance of showers. Vsby 1 to
3 NM.
.WED...S winds around 5 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds around 5 kt. Seas 2 to 3 ft.
.THU...N winds around 5 kt. Seas 2 to 3 ft.
.THU NIGHT...SW 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.

$$

ANZ233-211800-
Vineyard Sound-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. Showers likely with a chance of tstms.
.MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 2 to 3 ft. Showers likely with a chance of tstms.
.TUE...W winds 5 to 10 kt, becoming NW in the afternoon. Gusts up
to 25 kt. Seas 2 to 4 ft. Showers with tstms likely.
.TUE NIGHT...N winds 5 to 10 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 2 to 4 ft. A chance of showers. Vsby 1 to
3 NM.
.WED...W winds around 5 kt. Seas 2 to 3 ft.
.WED NIGHT...W winds around 5 kt. Seas 2 to 3 ft.
.THU...E winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW 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.

$$

ANZ234-211800-
Buzzards Bay-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft.
.SUN...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW around 5 kt after midnight. Seas around 2 ft.
.MON...N winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. A chance of showers.
.MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 2 to 3 ft. Showers likely with a chance of tstms. Vsby 1 to
3 NM.
.TUE...W winds 5 to 10 kt, becoming NW in the afternoon. Gusts up
to 25 kt. Seas 2 to 3 ft. Showers with tstms likely. Vsby 1 to
3 NM.
.TUE NIGHT...N winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.
.WED...W winds around 5 kt. Seas 2 to 3 ft.
.WED NIGHT...W winds around 5 kt. Seas 2 to 3 ft.
.THU...E winds 5 to 10 kt. Seas around 2 ft.
.THU NIGHT...SW winds 5 to 10 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.

$$

ANZ235-211800-
Rhode Island Sound-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds around 10 kt. Seas around 3 ft.
.SUN...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas around 3 ft.
.SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming
NW 5 to 10 kt after midnight. Seas 2 to 3 ft.
.MON...N winds around 5 kt, becoming SE in the afternoon. Seas
2 to 3 ft. Showers likely with a chance of tstms.
.MON NIGHT...SE winds 5 to 10 kt, becoming SW after midnight.
Seas 2 to 3 ft. Showers likely with a chance of tstms. Vsby 1 to
3 NM.
.TUE...W winds 5 to 10 kt, becoming NW in the afternoon. Gusts up
to 25 kt. Seas 3 to 5 ft. Showers with tstms likely. Vsby 1 to
3 NM.
.TUE NIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas
4 to 6 ft. A chance of showers. Vsby 1 to 3 NM.
.WED...W winds around 5 kt. Seas 3 to 5 ft.
.WED NIGHT...W winds around 5 kt. Seas 2 to 3 ft.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft.
.THU NIGHT...SW 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.

$$

ANZ237-211800-
Block Island Sound-
116 AM EDT Sun Jul 21 2019

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

$$

ANZ230-211800-
Boston Harbor-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Waves around 2 ft.
.SUN NIGHT...W winds 10 to 15 kt, becoming NW 5 to 10 kt after
midnight. Waves 1 foot or less.
.MON...N winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less. A chance of showers.
.MON NIGHT...E winds around 5 kt. Waves 1 foot or less. Showers
with a chance of tstms. Vsby 1 to 3 NM.
.TUE...N winds 5 to 10 kt with gusts up to 20 kt. Waves around
2 ft. Showers. Vsby 1 to 3 NM.
.TUE NIGHT...E winds around 5 kt, becoming SW around 5 kt after
midnight. Waves 1 foot or less.
.WED...SW winds around 5 kt. Waves 1 foot or less.
.WED NIGHT...W winds around 5 kt. Waves 1 foot or less.
.THU...NE winds around 5 kt. Waves 1 foot or less.
.THU NIGHT...SW 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.

$$

ANZ236-211800-
Narragansett Bay-
116 AM EDT Sun Jul 21 2019

.REST OF TONIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft.
.SUN...W winds 5 to 10 kt. Waves 2 to 3 ft.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.MON...N winds around 5 kt, becoming SE in the afternoon. Waves
around 2 ft. Showers likely with a chance of tstms.
.MON NIGHT...SE winds 5 to 10 kt, becoming NW after midnight.
Waves around 2 ft. Showers likely with a chance of tstms. Vsby
1 to 3 NM.
.TUE...NW winds 5 to 10 kt with gusts up to 25 kt. Waves 2 to
3 ft. Showers likely with a chance of tstms. Vsby 1 to 3 NM.
.TUE NIGHT...NW winds around 5 kt. Waves 2 to 3 ft.
.WED...W winds around 5 kt. Waves 2 to 3 ft.
.WED NIGHT...W winds around 5 kt. Waves 2 to 3 ft.
.THU...W winds around 5 kt. Waves around 2 ft.
.THU NIGHT...SW 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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