563
FZUS51 KBOX 170504
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EDT Thu Jul 17 2025

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

ANZ200-171800-
104 AM EDT Thu Jul 17 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Bermuda high pres will remain in place through Thu before a cold
front crosses the waters Fri. High pres will build over the waters
Sat through early next week.

$$

ANZ250-171800-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 1 foot at 7 seconds. Areas of
fog. Vsby 1 NM or less.
.THU...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 4 seconds and SE 1 foot at 7 seconds. Areas of fog in the
morning with vsby 1 NM or less.
.THU NIGHT...SW winds 15 to 20 kt, becoming W after midnight.
Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at
4 seconds and SE 2 ft at 8 seconds. Areas of fog. Vsby 1 NM or
less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 4 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 4 seconds and NE 2 ft at 7 seconds.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft
at 3 seconds and E 1 foot at 8 seconds.
.SAT NIGHT...SW winds around 15 kt with gusts up to 25 kt. Seas
2 to 3 ft. A chance of showers after midnight with vsby 1 to
3 NM.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt, becoming NW. Gusts up
to 25 kt. Seas 2 to 3 ft. A chance of showers. Vsby 1 to 3 NM.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. 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.

$$

ANZ251-171800-
Massachusetts Bay and Ipswich Bay-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 3 seconds and SE 1 foot at 7 seconds. Areas of
fog. Vsby 1 NM or less.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 3 seconds and SE 1 foot at 7 seconds. Areas of fog in the
morning with vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at
3 seconds and SE 2 ft at 8 seconds.
.FRI...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 3 seconds and E 1 foot at 9 seconds.
.FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NW 1 foot at 3 seconds and NE 1 foot at 7 seconds.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 3 seconds and E 2 ft at 5 seconds.
.SAT NIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Showers likely after midnight with vsby 1 to 3 NM.
.SUN...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Showers likely with a chance of tstms. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers and tstms.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
becoming W 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.

$$

ANZ231-171800-
Cape Cod Bay-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SW 1 foot at 2 seconds and SE 1 foot at 7 seconds. Areas
of fog. A slight chance of showers with isolated tstms. Vsby 1 NM
or less.
.THU...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
1 foot at 3 seconds and SE 1 foot at 7 seconds, becoming SW 2 ft
at 3 seconds and SE 1 foot at 8 seconds. Areas of fog in the
morning with vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at
8 seconds. Areas of fog. Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: NW 2 ft at 3 seconds and SE 1 foot at
9 seconds.
.FRI NIGHT...NW winds around 5 kt. Seas around 2 ft in the
evening, then 1 foot or less. Wave Detail: N 1 foot at 5 seconds,
becoming N 1 foot at 5 seconds and SE 1 foot at 15 seconds.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: N 1 foot at 5 seconds and SE
1 foot at 15 seconds, becoming S 1 foot at 3 seconds and E 1 foot
at 5 seconds.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers after midnight.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt, becoming NW. Gusts up
to 20 kt. Seas 2 to 3 ft. A chance of showers and tstms.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt. Seas 2 to 3 ft, then 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.

$$

ANZ254-171800-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. Areas of
fog. A slight chance of showers with isolated tstms. Vsby 1 NM or
less.
.THU...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: SE 3 ft at 7 seconds. Areas of fog. Vsby 1 NM
or less.
.THU NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft
at 6 seconds and E 1 foot at 10 seconds. Areas of fog. Vsby 1 NM
or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: W 4 ft at 6 seconds and E 2 ft at 10 seconds.
.FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NW
3 ft at 6 seconds and NE 2 ft at 9 seconds.
.SAT...W winds around 5 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at
7 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers after midnight.
.SUN...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Showers likely. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 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.

$$

ANZ255-171800-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 5 seconds and E 1 foot at 8 seconds. Areas of
fog. A chance of showers with isolated tstms. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 6 seconds and E 1 foot at 7 seconds.
Areas of fog in the morning with vsby 1 NM or less.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: SW 5 ft at 6 seconds and E 1 foot at
10 seconds. Areas of fog. Vsby 1 to 3 NM.
.FRI...NW winds 10 to 15 kt, becoming N 5 to 10 kt in the
afternoon. Gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 7 seconds and E 1 foot at 10 seconds.
.FRI NIGHT AND SAT...S winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 7 seconds and NE 1 foot at 7 seconds.
.SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds. A
chance of showers after midnight.
.SUN AND SUN NIGHT...SW winds 15 to 20 kt, becoming NW 10 to
15 kt. Gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers.
Vsby 1 to 3 NM.
.MON AND MON NIGHT...NE winds 10 to 15 kt. 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.

$$

ANZ256-171800-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 6 seconds. Areas of fog. A slight chance of
showers with isolated tstms. Vsby 1 NM or less.
.THU...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: SE
4 ft at 7 seconds. Areas of fog in the morning. A chance of
showers in the morning with vsby 1 NM or less.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: S 5 ft at 7 seconds. Areas of fog. Vsby
1 to 3 NM in the evening.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SW 5 ft
at 7 seconds and E 1 foot at 10 seconds.
.FRI NIGHT AND SAT...S winds 10 to 15 kt. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 7 seconds and E 1 foot at 10 seconds.
.SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SE
1 foot at 9 seconds. A chance of showers after midnight with vsby
1 to 3 NM.
.SUN...SW winds 15 to 20 kt with gusts up to 25 kt. Seas around
3 ft. A chance of showers and tstms. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. A chance of showers.
.MON AND MON NIGHT...NE winds 10 to 15 kt. 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.

$$

ANZ232-171800-
Nantucket Sound-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 3 seconds and SE 1 foot at 6 seconds. Areas of
fog. A chance of showers with a slight chance of tstms. Vsby 1 NM
or less.
.THU...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: S 3 ft at 5 seconds. Areas of fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.THU NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and SE 1 foot at 9 seconds. Areas of fog. Vsby 1 NM
or less, increasing to 1 to 3 NM after midnight.
.FRI...NW winds 10 to 15 kt, becoming N 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft
at 4 seconds and SE 1 foot at 10 seconds.
.FRI NIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SW 2 ft at 6 seconds and NE 1 foot at 4 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 6 seconds
and NE 1 foot at 7 seconds.
.SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 2 to 3 ft. A chance of showers after midnight.
.SUN...SW winds 15 to 20 kt. Seas 2 to 3 ft. A chance of showers
and tstms. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
around 2 ft. A chance of showers.
.MON AND MON NIGHT...N winds 10 to 15 kt. Gusts up to 20 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.

$$

ANZ233-171800-
Vineyard Sound-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 4 seconds and SE 1 foot at 8 seconds. Areas of
fog. A chance of showers with a slight chance of tstms. Vsby 1 NM
or less.
.THU...SW winds around 10 kt, increasing to around 15 kt in the
afternoon. 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 fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and SE 1 foot at
9 seconds. Areas of fog. Vsby 1 to 3 NM in the evening.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and E 1 foot at
10 seconds.
.FRI NIGHT AND SAT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 7 seconds and NE 1 foot at 4 seconds.
.SAT NIGHT...S winds 10 to 15 kt, becoming SW 15 to 20 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 5 seconds and SE
1 foot at 8 seconds. A chance of showers after midnight.
.SUN AND SUN NIGHT...SW winds 15 to 20 kt, becoming NW 10 to
15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
.MON AND MON NIGHT...NE winds 10 to 15 kt. Seas around 2 ft, then
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.

$$

ANZ234-171800-
Buzzards Bay-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds around 10 kt. Seas around 2 ft. Wave
Detail: SW 1 foot at 3 seconds and SE 1 foot at 7 seconds. Areas
of fog. A slight chance of showers with isolated tstms. Vsby 1 NM
or less.
.THU...SW winds around 10 kt, increasing to around 15 kt in the
afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW
3 ft at 4 seconds and SE 1 foot at 7 seconds. A chance of
showers. Areas of fog in the morning with vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at
9 seconds. Areas of fog in the evening with vsby 1 to 3 NM.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Seas around 2 ft. Wave Detail: W 2 ft at 7 seconds and SE 1 foot
at 10 seconds.
.FRI NIGHT AND SAT...S winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and NE 1 foot
at 3 seconds.
.SAT NIGHT...SW 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
8 seconds. A chance of showers after midnight.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. Seas 2 to 3 ft. A chance of showers and tstms.
.MON AND MON NIGHT...N winds 10 to 15 kt with gusts up to 20 kt,
becoming NE 5 to 10 kt. Seas around 2 ft, then 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.

$$

ANZ235-171800-
Rhode Island Sound-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: S 2 ft at 5 seconds and SE 1 foot at 9 seconds. Areas of
fog. A slight chance of showers with isolated tstms. Vsby 1 NM or
less.
.THU...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 4 ft at 6 seconds and SE 1 foot at
9 seconds. Areas of fog in the morning. A chance of showers in
the morning with vsby 1 NM or less.
.THU NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SE
1 foot at 9 seconds. Areas of fog in the evening with vsby 1 to
3 NM.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft
at 7 seconds and SE 1 foot at 10 seconds.
.FRI NIGHT AND SAT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 3 ft at 7 seconds and E 1 foot at 7 seconds.
.SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at
8 seconds. A chance of showers after midnight with vsby 1 to
3 NM.
.SUN AND SUN NIGHT...SW winds 15 to 20 kt, becoming NW 10 to
15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
.MON AND MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 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.

$$

ANZ237-171800-
Block Island Sound-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 5 seconds and SE 1 foot at 8 seconds. Areas of
fog. A slight chance of showers with isolated tstms. Vsby 1 NM or
less.
.THU...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: S 3 ft at 7 seconds. Areas of fog in the
morning. A chance of showers in the morning with vsby 1 NM or
less.
.THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at
7 seconds.
.FRI...NW winds 10 to 15 kt with gusts up to 20 kt, becoming W
5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: W 4 ft
at 7 seconds and SE 1 foot at 8 seconds.
.FRI NIGHT...SW winds 5 to 10 kt, becoming SE after midnight.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and SE 1 foot
at 9 seconds.
.SAT...SE winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 7 seconds.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas around 2 ft. Showers likely after midnight with
vsby 1 to 3 NM.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. Seas 2 to 3 ft. A chance of showers and tstms. Vsby
1 to 3 NM.
.MON AND MON NIGHT...NE winds 10 to 15 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.

$$

ANZ230-171800-
Boston Harbor-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
Areas of fog. Vsby 1 to 3 NM.
.THU...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves around 2 ft. A chance of
showers. A chance of tstms in the afternoon. Areas of fog in the
morning with vsby 1 NM or less.
.THU NIGHT...SW winds around 10 kt, becoming W after midnight.
Gusts up to 25 kt. Waves around 2 ft.
.FRI...NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Waves around 2 ft.
.FRI NIGHT...NW winds around 5 kt. Waves 1 foot or less.
.SAT...W winds around 5 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft
in the afternoon.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft. Showers likely after midnight with
vsby 1 to 3 NM.
.SUN...W winds 10 to 15 kt. Waves around 2 ft. Showers likely
with a chance of tstms. Vsby 1 to 3 NM.
.SUN NIGHT...NW winds 10 to 15 kt. Waves around 2 ft. A chance of
showers and tstms.
.MON AND MON NIGHT...N winds 10 to 15 kt, becoming NW 5 to 10 kt.
Waves around 2 ft, then 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.

$$

ANZ236-171800-
Narragansett Bay-
104 AM EDT Thu Jul 17 2025

.REST OF TONIGHT...S winds 5 to 10 kt. Waves around 2 ft. Areas
of fog. A chance of showers with a slight chance of tstms. Vsby
1 NM or less.
.THU...S winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. A chance of
showers. Areas of fog in the morning with vsby 1 NM or less.
.THU NIGHT...SW winds 10 to 15 kt, becoming W after midnight.
Gusts up to 20 kt. Waves 2 to 3 ft.
.FRI...NW winds 5 to 10 kt. Gusts up to 20 kt in the morning.
Waves around 2 ft.
.FRI NIGHT...W winds around 5 kt. Waves around 2 ft.
.SAT...SE winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Waves around 2 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Waves around 2 ft. A chance of showers after midnight
with vsby 1 to 3 NM.
.SUN AND SUN NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming NW. Waves around 2 ft. A chance of showers and tstms.
.MON AND MON NIGHT...NE winds 5 to 10 kt. Waves around 2 ft, then
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.

$$

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