696
FZUS51 KBOX 171406
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1005 AM EDT Fri Jul 17 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM

ANZ200-180300-
1005 AM EDT Fri Jul 17 2026

.Synopsis for Massachusetts and Rhode Island coastal waters...
A weak low pres should move along the S coast this evening. A high
pres should then approach the waters Fri into Sat. A low pres moving
across nrn New England Sat night into early Sun should push its cold
front across the waters. A warm front should move N across the
waters Tue.

$$

ANZ250-180300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds around 10 kt with gusts up to 20 kt,
becoming SW. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds
and S 1 foot at 5 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 4 seconds and N 1 foot at 4 seconds. Areas of smoke
after midnight.
.SAT...S winds 5 to 10 kt with gusts up to 20 kt, increasing to
20 to 25 kt with gusts up to 35 kt in the afternoon. Seas around
2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: S 2 ft
at 3 seconds and N 1 foot at 3 seconds, becoming S 4 ft at
4 seconds and N 2 ft at 3 seconds. Areas of smoke. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 1 foot at
14 seconds. Showers with a chance of tstms.
.SUN AND SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds and W 2 ft at
4 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at
9 seconds.
.TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas
around 3 ft. Showers.

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.

$$

ANZ251-180300-
Massachusetts Bay and Ipswich Bay-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: W 1 foot at 3 seconds and N 1 foot at 3 seconds.
.TONIGHT...SW winds around 5 kt. Seas 1 foot or less. Wave
Detail: S 1 foot at 2 seconds and N 1 foot at 3 seconds. Areas of
smoke after midnight.
.SAT...S winds 5 to 10 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to
3 ft. Wave Detail: S 3 ft at 4 seconds and N 1 foot at 3 seconds.
Areas of smoke. A chance of showers in the afternoon.
.SAT NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft
at 4 seconds and SE 1 foot at 8 seconds. Showers with a chance of
tstms in the evening, then a chance of showers after midnight.
.SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot
at 7 seconds.
.MON THROUGH TUE...S winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and N 1 foot at
3 seconds.
.TUE NIGHT...S winds around 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers.

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.

$$

ANZ231-180300-
Cape Cod Bay-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 2 ft, then
1 foot or less. Wave Detail: N 1 foot at 3 seconds and S 1 foot
at 5 seconds, becoming N 1 foot at 4 seconds and S 1 foot at
5 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail:
S 1 foot at 2 seconds and N 1 foot at 4 seconds. Areas of smoke.
.SAT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming S
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to
4 ft. Wave Detail: SW 2 ft at 3 seconds and N 1 foot at
4 seconds. Areas of smoke. A chance of showers in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at
10 seconds. Showers with a chance of tstms.
.SUN...W winds 10 to 15 kt, becoming NW 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 4 seconds and SE 1 foot at 8 seconds. A chance of showers
in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: N 1 foot at 4 seconds and S 1 foot at 6 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas
2 to 4 ft. Showers.

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.

$$

ANZ254-180300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt,
becoming W. Seas 2 to 3 ft. Wave Detail: N 2 ft at 3 seconds and
S 2 ft at 5 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 6 seconds and N 1 foot at 5 seconds. Areas of smoke.
.SAT...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft
at 4 seconds and N 1 foot at 5 seconds. Areas of smoke.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas
4 to 6 ft. Wave Detail: SE 6 ft at 7 seconds and W 2 ft at
5 seconds. Showers with a chance of tstms.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt, becoming NW
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 3 ft at 8 seconds.
Showers likely in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S
4 ft at 8 seconds and NW 1 foot at 3 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Showers likely.

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.

$$

ANZ255-180300-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds around 5 kt, becoming SW. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 6 seconds and N 1 foot at
3 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 6 seconds and N 1 foot at 4 seconds. Areas of smoke.
.SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 5 seconds and NE 1 foot at
5 seconds. Areas of smoke. A chance of showers in the afternoon
with vsby 1 to 3 NM.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: S
5 ft at 5 seconds and NW 1 foot at 6 seconds, becoming SW 7 ft at
7 seconds and NW 1 foot at 6 seconds. Showers with a chance of
tstms.
.SUN...W winds 15 to 20 kt with gusts up to 25 kt, diminishing to
10 to 15 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: W 7 ft
at 6 seconds and E 1 foot at 10 seconds. Showers likely in the
morning.
.SUN NIGHT...NW winds around 10 kt. Seas 4 to 6 ft. Wave Detail:
SW 6 ft at 8 seconds and N 2 ft at 5 seconds.
.MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Seas 3 to
5 ft.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. Showers likely.

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.

$$

ANZ256-180300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds around 5 kt, becoming SW. Seas around
2 ft. Wave Detail: S 2 ft at 7 seconds and NW 1 foot at
2 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 5 seconds and N 1 foot at 4 seconds. Areas of smoke.
.SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: SW
2 ft at 5 seconds and NE 1 foot at 5 seconds, becoming S 4 ft at
5 seconds and N 2 ft at 5 seconds. Areas of smoke. Showers likely
in the afternoon with vsby 1 to 3 NM.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. Wave Detail: SW 7 ft at 7 seconds and NW 3 ft at
4 seconds. Showers with a chance of tstms.
.SUN...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft
at 7 seconds and E 3 ft at 9 seconds. A chance of showers in the
morning.
.SUN NIGHT...NW winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds
and NE 2 ft at 7 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 3 to 5 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft. Showers.

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.

$$

ANZ232-180300-
Nantucket Sound-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds 5 to 10 kt, becoming SW with gusts up
to 20 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds
and SW 1 foot at 5 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
1 foot at 3 seconds and SW 1 foot at 3 seconds. Areas of smoke.
.SAT...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 4 seconds and NE 1 foot at 5 seconds. Areas of smoke. A
chance of showers in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 5 seconds and SE 1 foot at
9 seconds. Showers with a chance of tstms.
.SUN...W winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: S 4 ft at 7 seconds and W
3 ft at 4 seconds, becoming W 2 ft at 3 seconds and S 2 ft at
7 seconds. Showers likely in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 6 seconds and NW 1 foot at 4 seconds.
.MON THROUGH TUE...S winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Showers.

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.

$$

ANZ233-180300-
Vineyard Sound-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: SW 2 ft at 5 seconds and N 1 foot at
4 seconds.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and W 1 foot
at 3 seconds. Areas of smoke.
.SAT...SW winds 5 to 10 kt, becoming S around 15 kt in the
afternoon. Gusts up to 25 kt. Seas around 2 ft, building to 3 to
4 ft in the afternoon. Wave Detail: SW 2 ft at 4 seconds and NE
1 foot at 8 seconds, becoming SW 4 ft at 5 seconds and NE 1 foot
at 4 seconds. Areas of smoke. Showers likely in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: W
4 ft at 7 seconds and SE 1 foot at 10 seconds, becoming SW 6 ft
at 7 seconds and E 2 ft at 7 seconds. Showers with a chance of
tstms.
.SUN...W winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and SE 2 ft at
7 seconds. A chance of showers in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SW
4 ft at 8 seconds and E 2 ft at 8 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Showers.

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.

$$

ANZ234-180300-
Buzzards Bay-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt with gusts up to 20 kt. Seas
1 foot or less, then around 2 ft. Wave Detail: N 1 foot at
3 seconds and SW 1 foot at 5 seconds, becoming W 1 foot at
4 seconds and N 1 foot at 4 seconds.
.TONIGHT...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. Wave
Detail: SW 1 foot at 4 seconds and N 1 foot at 5 seconds,
becoming NE 1 foot at 3 seconds and W 1 foot at 4 seconds. Areas
of smoke.
.SAT...SW winds 10 to 15 kt. Gusts up to 20 kt, increasing to
30 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at
5 seconds and NE 1 foot at 7 seconds. Areas of smoke. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and SE 2 ft at
11 seconds. Showers with a chance of tstms.
.SUN...W winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and SW 3 ft at
4 seconds. A chance of showers in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 8 seconds and S 2 ft at 9 seconds.
.MON THROUGH TUE...S winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 3 ft.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. Showers.

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.

$$

ANZ235-180300-
Rhode Island Sound-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and N 1 foot at
3 seconds.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot
at 3 seconds. Areas of smoke.
.SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: SW
2 ft at 4 seconds and E 1 foot at 8 seconds, becoming SW 4 ft at
5 seconds and NE 1 foot at 4 seconds. Areas of smoke. Showers
likely in the afternoon with vsby 1 NM or less.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and SE 1 foot at
14 seconds. Showers with a chance of tstms.
.SUN...W winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 1 foot
at 13 seconds. A chance of showers in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S
5 ft at 8 seconds and E 3 ft at 8 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Showers.

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.

$$

ANZ237-180300-
Block Island Sound-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt. Gusts up to 20 kt. Seas
around 2 ft. Wave Detail: S 2 ft at 5 seconds and NW 1 foot at
2 seconds.
.TONIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot
at 3 seconds. Areas of smoke.
.SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas around
2 ft, building to 3 to 4 ft in the afternoon. Wave Detail: S 2 ft
at 5 seconds and W 1 foot at 2 seconds, becoming SW 3 ft at
4 seconds and NE 1 foot at 5 seconds. Areas of smoke. Showers
likely with a chance of tstms in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 2 ft at
4 seconds. Showers with a chance of tstms.
.SUN...W winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 2 ft at
4 seconds.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 8 seconds and SE 2 ft at 8 seconds.
.MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Seas 2 to
4 ft.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of showers.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Showers.

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.

$$

ANZ230-180300-
Boston Harbor-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Waves around 2 ft.
.TONIGHT...SW winds around 5 kt. Waves 1 foot or less. Areas of
smoke.
.SAT...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up
to 30 kt in the afternoon. Waves around 2 ft. Areas of smoke. A
chance of showers in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Waves around 2 ft. Showers. A
chance of tstms in the evening.
.SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Waves around
2 ft.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. A chance of showers.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft. Showers.

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.

$$

ANZ236-180300-
Narragansett Bay-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt. Waves 1 foot or less, then
around 2 ft.
.TONIGHT...SW winds 5 to 10 kt. Waves around 2 ft. Areas of
smoke.
.SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Areas of smoke. A
chance of showers in the afternoon.
.SAT NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Gusts up to 30 kt. Waves 2 to 4 ft. Showers with
a chance of tstms.
.SUN...W winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Waves 2 to 3 ft. A chance of showers in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft.
.MON AND MON NIGHT...W winds 5 to 10 kt, becoming S. Waves around
2 ft.
.TUE...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of showers.
.TUE NIGHT...S winds around 15 kt with gusts up to 20 kt. Waves
2 to 4 ft. Showers.

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.

$$

ANZ280-180300-
Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds 10 to 15 kt, becoming W 5 to 10 kt.
Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at
4 seconds and S 1 foot at 6 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 4 seconds and S 2 ft at 7 seconds. Areas of smoke after
midnight.
.SAT...S winds 10 to 15 kt with gusts up to 20 kt, increasing to
20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 2 to
3 ft, building to 3 to 5 ft in the afternoon. Wave Detail: S 2 ft
at 6 seconds and NW 1 foot at 3 seconds, becoming S 5 ft at
5 seconds and NW 1 foot at 3 seconds. Areas of smoke. A chance of
showers in the afternoon.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 7 ft. Wave Detail: SW 6 ft at 6 seconds and SE 6 ft at
9 seconds. Showers with a chance of tstms.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
7 ft, subsiding to 3 to 5 ft in the afternoon. Wave Detail: S
6 ft at 7 seconds and SE 1 foot at 13 seconds, becoming S 4 ft at
7 seconds and W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at
4 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas
3 to 5 ft. Showers likely.

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.

$$

ANZ281-180300-
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...W winds 5 to 10 kt with gusts up to 20 kt. Seas
around 3 ft. Wave Detail: S 3 ft at 6 seconds and N 2 ft at
4 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 6 seconds and N 2 ft at 5 seconds. Areas of smoke after
midnight.
.SAT...S winds 10 to 15 kt with gusts up to 20 kt, increasing to
15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 2 to
4 ft. Wave Detail: S 4 ft at 5 seconds and N 1 foot at 5 seconds.
Areas of smoke.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas
5 to 7 ft. Wave Detail: S 7 ft at 7 seconds and W 2 ft at
5 seconds. Showers with a chance of tstms.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
7 ft. Wave Detail: W 7 ft at 7 seconds and SE 3 ft at 7 seconds.
A chance of showers in the morning.
.SUN NIGHT...W winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: S
6 ft at 8 seconds and S 4 ft at 10 seconds.
.MON...NW winds 5 to 10 kt. Seas 4 to 6 ft.
.MON NIGHT AND TUE...S winds 5 to 10 kt, becoming SE 10 to 15 kt
with gusts up to 25 kt. Seas 3 to 4 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Showers likely.

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.

$$

ANZ282-180300-
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds around 5 kt. Seas around 3 ft. Wave
Detail: SW 3 ft at 6 seconds and N 1 foot at 4 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 6 seconds and N 1 foot at 4 seconds. Areas of smoke.
.SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and N 1 foot at 5 seconds. Areas of smoke.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft, building to 5 to 7 ft after midnight. Wave Detail: S
4 ft at 5 seconds and N 1 foot at 4 seconds, becoming SW 7 ft at
6 seconds and NW 1 foot at 5 seconds. Showers with a chance of
tstms.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
7 ft. Wave Detail: W 7 ft at 7 seconds and E 1 foot at 8 seconds.
A chance of showers in the morning.
.SUN NIGHT...NW winds 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: SW
7 ft at 8 seconds and N 2 ft at 4 seconds.
.MON...N winds 5 to 10 kt. Seas 4 to 6 ft.
.MON NIGHT AND TUE...S winds 5 to 10 kt, becoming SE 10 to 15 kt
with gusts up to 20 kt. Seas 3 to 4 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Showers likely.

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.

$$

ANZ283-180300-
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM-
1005 AM EDT Fri Jul 17 2026

.THIS AFTERNOON...NW winds around 5 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 6 seconds and N 1 foot at 3 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
2 ft at 3 seconds and SW 2 ft at 6 seconds. Areas of smoke.
.SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at
8 seconds. Areas of smoke. A chance of showers in the afternoon
with vsby 1 to 3 NM.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 35 kt. Seas
3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: S
5 ft at 5 seconds and N 1 foot at 4 seconds, becoming SW 7 ft at
7 seconds and NW 4 ft at 4 seconds. Showers with a chance of
tstms.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
7 ft. Wave Detail: SW 7 ft at 7 seconds and E 1 foot at
9 seconds. Showers likely in the morning.
.SUN NIGHT...NW winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail:
SW 6 ft at 8 seconds and N 2 ft at 5 seconds.
.MON THROUGH TUE...S winds 10 to 15 kt with gusts up to 25 kt.
Seas 3 to 5 ft.
.TUE NIGHT...S winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft. Showers likely.

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.

$$

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston