234 

FZUS51 KBOX 171705
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 PM EDT Fri Apr 17 2026

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

ANZ200-180600-
104 PM EDT Fri Apr 17 2026

.Synopsis for Massachusetts and Rhode Island coastal waters...
Cold front moves across the waters early today bringing rain
showers, with returning northeast winds on all waters this aftn
through Sat. A strong cold front then moves over the waters on Sun.

$$

ANZ250-180600-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: N 2 ft at 3 seconds and SE 2 ft at 8 seconds. Patchy fog.
A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after
midnight. Seas around 2 ft. Wave Detail: N 2 ft at 4 seconds and
SE 2 ft at 8 seconds. Patchy fog. Vsby 1 to 3 NM.
.SAT...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at
8 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
2 to 4 ft. Wave Detail: E 4 ft at 7 seconds and N 1 foot at
3 seconds. Patchy fog in the evening.
.SUN...S winds 10 to 15 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds
and SW 2 ft at 3 seconds. A chance of showers in the morning,
then showers in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: NW 4 ft at 4 seconds and E 3 ft at
8 seconds. Showers likely, mainly in the evening.
.MON AND MON NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.TUE AND TUE NIGHT...N winds 10 to 15 kt, becoming S 15 to 20 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.

$$

ANZ251-180600-
Massachusetts Bay and Ipswich Bay-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: N 2 ft at 3 seconds and SE 1 foot at 8 seconds. Patchy
fog. A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...N winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
2 ft at 4 seconds and SE 1 foot at 8 seconds. Patchy fog. Vsby
1 to 3 NM in the evening.
.SAT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE
2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby
1 to 3 NM in the morning.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and N 1 foot at
3 seconds. Patchy fog in the evening.
.SUN AND SUN NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: E 4 ft at 8 seconds and W 3 ft at 3 seconds. A chance of
showers in the morning, then showers through the night.
.MON THROUGH TUE NIGHT...S winds 15 to 20 kt. Seas 2 to 3 ft.
Wave Detail: S 3 ft at 4 seconds and NW 3 ft at 4 seconds.

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.

$$

ANZ231-180600-
Cape Cod Bay-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds around 10 kt. Seas around 2 ft. Wave
Detail: N 1 foot at 2 seconds and S 1 foot at 8 seconds. Patchy
fog. A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail:
N 1 foot at 3 seconds and S 1 foot at 8 seconds. Patchy fog. Vsby
1 to 3 NM.
.SAT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N
1 foot at 3 seconds and S 1 foot at 8 seconds. Patchy fog. Vsby
1 to 3 NM in the morning.
.SAT NIGHT...NE winds around 5 kt, becoming S after midnight.
Seas around 2 ft. Wave Detail: NE 1 foot at 4 seconds and S
1 foot at 7 seconds. Patchy fog in the evening.
.SUN...S 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. Wave Detail: NE 2 ft
at 5 seconds and SW 2 ft at 5 seconds. A chance of showers in the
morning, then showers likely in the afternoon.
.SUN NIGHT...NW winds around 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and S 1 foot at
6 seconds. Showers likely, mainly in the evening.
.MON THROUGH TUE NIGHT...SW winds 15 to 20 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.

$$

ANZ254-180600-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave
Detail: S 3 ft at 7 seconds and NW 1 foot at 3 seconds. Patchy
fog. A chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds around 10 kt. Seas 2 to 4 ft. Wave Detail: S
3 ft at 7 seconds and N 2 ft at 4 seconds. Patchy fog. Vsby 1 NM
or less, increasing to 1 to 3 NM after midnight.
.SAT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 6 seconds and
S 3 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM in the morning.
.SAT NIGHT...NE winds 5 to 10 kt, becoming S after midnight. Seas
3 to 4 ft. Wave Detail: E 4 ft at 7 seconds and S 2 ft at
7 seconds. Patchy fog in the evening.
.SUN...S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 3 to 5 ft. Wave Detail: E 4 ft at 7 seconds and SW 3 ft at
5 seconds. Showers likely in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: W 3 ft at 4 seconds and S 3 ft at
6 seconds. Showers likely, mainly in the evening.
.MON...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 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.

$$

ANZ255-180600-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: S 4 ft at 7 seconds and N 2 ft at 6 seconds. Patchy fog.
A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds and N 1 foot at 3 seconds. Patchy fog. A chance
of rain. Vsby 1 NM or less, increasing to 1 to 3 NM after
midnight.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and N 2 ft at 4 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt, becoming S after midnight. Seas
2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and S 2 ft at
7 seconds. Patchy fog in the evening.
.SUN...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 4 seconds and
E 3 ft at 7 seconds. Showers likely in the afternoon.
.SUN NIGHT...NW winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds
and E 3 ft at 7 seconds. Showers likely, mainly in the evening.
.MON...W winds 15 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT AND TUE...NW winds 15 to 20 kt. Seas 2 to 4 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 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.

$$

ANZ256-180600-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: S 5 ft at 7 seconds and NE 2 ft at 5 seconds. Patchy fog.
A chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds and N 2 ft at 4 seconds. Patchy fog. Vsby 1 NM
or less in the evening.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and N 2 ft at 4 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at
7 seconds.
.SUN...S winds 10 to 15 kt, becoming W 15 to 20 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and
E 2 ft at 7 seconds. A chance of showers in the morning, then
showers likely in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: W 4 ft at 5 seconds and SE 3 ft at
7 seconds. Showers likely in the evening.
.MON AND MON NIGHT...W winds 15 to 20 kt, becoming NW. Seas 3 to
5 ft.
.TUE...NW winds 15 to 20 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 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.

$$

ANZ232-180600-
Nantucket Sound-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...N winds around 10 kt. Seas around 2 ft. Wave
Detail: N 2 ft at 7 seconds and S 1 foot at 7 seconds. Patchy
fog. A chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds around 10 kt. Seas around 2 ft. Wave Detail:
N 1 foot at 4 seconds and S 1 foot at 7 seconds. Patchy fog. Vsby
1 NM or less, increasing to 1 to 3 NM after midnight.
.SAT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: N
2 ft at 4 seconds and S 1 foot at 7 seconds. Patchy fog. Vsby
1 to 3 NM in the morning.
.SAT NIGHT...NE winds 5 to 10 kt, becoming S after midnight. Seas
around 2 ft. Wave Detail: E 2 ft at 7 seconds and N 1 foot at
3 seconds. Patchy fog in the evening.
.SUN...S winds 10 to 15 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds
and S 2 ft at 6 seconds. Showers likely in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 5 seconds and E 2 ft at 7 seconds. Showers likely,
mainly in the evening.
.MON THROUGH TUE NIGHT...SW winds 15 to 20 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.

$$

ANZ233-180600-
Vineyard Sound-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...N winds around 10 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 7 seconds and N 1 foot at 6 seconds. Patchy
fog. A slight chance of rain. Vsby 1 to 3 NM.
.TONIGHT...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog. Vsby
1 to 3 NM in the evening.
.SAT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt, becoming SE after midnight.
Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and S
1 foot at 6 seconds. Patchy fog in the evening.
.SUN...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E
1 foot at 8 seconds. A chance of showers in the morning, then
showers likely in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
SW 3 ft at 6 seconds and E 1 foot at 8 seconds. Showers likely,
mainly in the evening.
.MON THROUGH TUE...NW winds 15 to 20 kt. Seas 2 to 3 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 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.

$$

ANZ234-180600-
Buzzards Bay-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 7 seconds and N 1 foot at 6 seconds. Patchy
fog. A slight chance of rain. Vsby 1 to 3 NM.
.TONIGHT...NE winds around 10 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 3 seconds and SW 2 ft at 7 seconds. Patchy fog. Vsby
1 to 3 NM in the evening.
.SAT...NE winds around 10 kt. Seas around 2 ft. Wave Detail: N
1 foot at 4 seconds and SW 1 foot at 7 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt, becoming SE after midnight.
Seas around 2 ft in the evening, then 1 foot or less. Wave
Detail: N 1 foot at 3 seconds and S 1 foot at 6 seconds, becoming
NE 1 foot at 4 seconds and S 1 foot at 6 seconds. Patchy fog in
the evening.
.SUN...S winds 10 to 15 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at
4 seconds and E 1 foot at 9 seconds. A chance of showers in the
morning, then showers in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 5 seconds and NW 2 ft at 4 seconds. Showers likely,
mainly in the evening.
.MON THROUGH TUE...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 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.

$$

ANZ235-180600-
Rhode Island Sound-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: SE 4 ft at 7 seconds and NW 1 foot at 3 seconds. Patchy
fog. A chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 7 seconds and NE 2 ft at 5 seconds. Patchy fog. Vsby 1 to
3 NM in the evening.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and N 2 ft at 4 seconds. Patchy fog in the morning
with vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at
7 seconds.
.SUN AND SUN NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: W 3 ft at 4 seconds and SE 3 ft at 7 seconds. A chance of
showers in the morning, then showers through the night.
.MON AND MON NIGHT...W winds 15 to 20 kt, becoming NW. Seas 2 to
4 ft. Wave Detail: W 3 ft at 4 seconds and S 2 ft at 7 seconds.
.TUE...NW winds 15 to 20 kt. Seas around 2 ft.
.TUE NIGHT...SW winds 20 to 25 kt. Seas 3 to 5 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.

$$

ANZ237-180600-
Block Island Sound-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: S 4 ft at 7 seconds and NW 1 foot at 2 seconds. Patchy
fog. A chance of rain with isolated tstms. Vsby 1 NM or less.
.TONIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 7 seconds and N 2 ft at 4 seconds. Patchy fog. Vsby 1 to
3 NM in the evening.
.SAT...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 7 seconds and N 1 foot at 4 seconds. Patchy fog in the
morning.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 7 seconds and NE 1 foot at
4 seconds.
.SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at
6 seconds. A chance of showers in the morning, then showers
through the night.
.MON THROUGH TUE NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft.
Wave Detail: SW 3 ft at 5 seconds and E 1 foot at 8 seconds.

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.

$$

ANZ230-180600-
Boston Harbor-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 10 to 15 kt. Waves around 2 ft. Patchy
fog. A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog.
Vsby 1 to 3 NM.
.SAT...NE winds around 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. Patchy fog in the morning with vsby 1 to
3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight.
Waves 1 foot or less. Patchy fog in the evening.
.SUN AND SUN NIGHT...W winds 15 to 20 kt. Waves around 2 ft.
Showers.
.MON THROUGH TUE NIGHT...S winds 10 to 15 kt with gusts up to
20 kt. Waves 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.

$$

ANZ236-180600-
Narragansett Bay-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 5 to 10 kt. Waves 2 to 3 ft. Patchy
fog. A chance of rain with isolated tstms. Vsby 1 to 3 NM.
.TONIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Vsby
1 to 3 NM in the evening.
.SAT...NE winds around 10 kt. Waves around 2 ft. Patchy fog in
the morning with vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight.
Waves around 2 ft.
.SUN AND SUN NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt.
Waves 2 to 3 ft. A chance of showers in the morning, then showers
through the night.
.MON THROUGH TUE NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Waves 2 to 3 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.

$$

ANZ280-180600-
Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas around 3 ft. Wave
Detail: S 3 ft at 7 seconds and NE 2 ft at 6 seconds. Patchy fog.
A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and N
2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 NM in the evening.
.SAT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: SE 5 ft at 7 seconds. Patchy fog in the
morning with vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
4 to 5 ft. Wave Detail: SE 5 ft at 7 seconds. Patchy fog in the
evening.
.SUN...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds and S
3 ft at 7 seconds. A chance of showers in the morning, then
showers likely in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 6 ft. Wave Detail: W 4 ft at 4 seconds and SE 3 ft at
7 seconds. Showers likely, mainly in the evening.
.MON AND MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 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.

$$

ANZ281-180600-
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: S 5 ft at 7 seconds and NW 1 foot at 3 seconds. Patchy
fog. A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt after
midnight. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and NE
2 ft at 6 seconds. Patchy fog. A chance of rain in the evening.
Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
5 ft. Wave Detail: NE 5 ft at 7 seconds and S 3 ft at 7 seconds.
Patchy fog in the morning with vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt, becoming SW after midnight.
Seas 4 to 5 ft. Wave Detail: NE 5 ft at 7 seconds and S 2 ft at
7 seconds. Patchy fog in the evening.
.SUN...S winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Seas 4 to 6 ft. Wave Detail: SW 4 ft at 6 seconds and
E 4 ft at 7 seconds. A chance of showers in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 6 ft. Wave Detail: SW 4 ft at 5 seconds and E 3 ft at
8 seconds. Showers likely, mainly in the evening.
.MON...NW winds 15 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt with gusts up
to 25 kt. Seas 3 to 5 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.

$$

ANZ282-180600-
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas around 5 ft. Wave
Detail: S 5 ft at 7 seconds and NW 2 ft at 2 seconds. Patchy fog.
A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S
5 ft at 7 seconds and N 1 foot at 3 seconds. Patchy fog. A chance
of rain in the evening. Vsby 1 NM or less, increasing to 1 to
3 NM after midnight.
.SAT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 7 seconds and N 2 ft at 4 seconds. Patchy fog in the morning.
.SAT NIGHT...NE winds 5 to 10 kt, becoming S after midnight. Seas
3 to 4 ft. Wave Detail: NE 4 ft at 7 seconds and S 2 ft at
7 seconds.
.SUN...S winds 10 to 15 kt, becoming SW 15 to 20 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 4 ft, building to 4 to
6 ft in the afternoon. Wave Detail: NE 4 ft at 8 seconds and S
3 ft at 7 seconds, becoming SW 4 ft at 5 seconds and NE 4 ft at
8 seconds. A chance of showers in the afternoon.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 6 ft. Wave Detail: SW 5 ft at 6 seconds and E 3 ft at
8 seconds. Showers likely, mainly in the evening.
.MON AND MON NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft.
.TUE AND TUE NIGHT...N winds 15 to 20 kt, becoming SW. Gusts up
to 25 kt. Seas 3 to 5 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.

$$

ANZ283-180600-
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM-
104 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: S 5 ft at 7 seconds and N 3 ft at 5 seconds. Patchy fog.
A slight chance of rain. Vsby 1 NM or less.
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: S
5 ft at 7 seconds and N 2 ft at 4 seconds. Patchy fog. Vsby 1 NM
or less in the evening.
.SAT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 7 seconds and N 2 ft at 4 seconds. Patchy fog in the morning.
.SAT NIGHT...E winds 5 to 10 kt, becoming SE after midnight. Seas
2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and S 2 ft at
6 seconds.
.SUN...S winds 15 to 20 kt, becoming SW in the afternoon. Gusts
up to 25 kt. Seas 2 to 4 ft, building to 4 to 5 ft in the
afternoon. Wave Detail: S 3 ft at 6 seconds and E 3 ft at
7 seconds, becoming SW 4 ft at 5 seconds and E 3 ft at 8 seconds.
Showers likely in the afternoon.
.SUN NIGHT...NW winds 20 to 25 kt. Seas 5 to 6 ft. Wave Detail: W
5 ft at 5 seconds and S 3 ft at 6 seconds. Showers likely, mainly
in the evening.
.MON...NW winds 15 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.TUE...NW winds 15 to 20 kt. Seas 2 to 4 ft.
.TUE NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 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.

$$

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413 

FZZS50 NSTU 171730
CWFPPG

Coastal Waters Forecast
National Weather Service Pago Pago  AS
630 AM SST Fri Apr 17 2026

American Samoa coastal waters out to 40 nautical miles including
National Marine Sanctuary of American Samoa

PSZ100-180545-
630 AM SST Fri Apr 17 2026

.Synopsis for American Samoa coastal waters...A trough to the west
will linger near the area today. Possible thunderstorms and heavy
showers nearby may elevate seas and winds at times. No
significant swell is expected for this weekend.

$$

PSZ152-154>159-180545-
Swains Island-Pago Pago Harbor-
Northern Coastal waters of Tutuila and Aunuu-
Southern Coastal waters of Tutuila and Aunuu-
Northern Coastal waters of Manua-Southern Coastal waters of Manua-
Coastal waters of Rose Atoll-
630 AM SST Fri Apr 17 2026

...There are no Warnings...

.TODAY...Variable wind up to 10 knots. Seas 4 to 6 feet. Numerous
showers and isolated thunderstorms.
.TONIGHT...Variable wind 5 knots. Seas 4 to 6 feet. Scattered
showers.
.SATURDAY...Southeast wind 10 knots. Seas 4 to 6 feet. Scattered
showers.
.SATURDAY NIGHT THROUGH TUESDAY...East wind 10 to 15 knots. Seas
4 to 6 feet. Numerous showers.

$$

The next scheduled forecast will be issued at 300 PM SST.
For the other forecasts and model data go to our web page
http://www.weather.gov/ppg

&&

.VAAIGA LAUTELE O LE TAU MO GATAIFALE O AMERIKA SAMOA...O le a
se'e mai pea uiga louloua o le tau i luga o le atunu'u e oo i le
aso. O faititili o le a si'isi'i ai sami ma savili i taimi. E
leai ni auma tetele mo lenei faaiuga o le vaiaso.

...E leai ni Lapata'iga...

.LE ASO...Savili e agi le lautasi e oo i le 10 note. Sami e 4 i
le 6 futu. E toulu timuga ma e pa pa nai faititili.
.PO NANEI...Savili e agi le lautasi e 5 note. Sami e 4 i le 6
futu. E ta'ape solo timu.
.ASO TOONA'I...Savili mai saute i sasa'e 10 note. Sami e 4 i le 6
futu. E taape solo timu.
.PO ASO TOONA'I E OO I LE ASO LUA...Savili mai sasa'e 10 i le 15
note. Sami e 4 i le 6 futu. E toulu timuga.

$$






348 

FZUS52 KJAX 171734
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
134 PM EDT Fri Apr 17 2026

Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.

Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.

AMZ400-180800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
134 PM EDT Fri Apr 17 2026

.SYNOPSIS...

Surface high pressure ridging will be south of the area into
Saturday night. Atlantic sea breeze expected this afternoon and
Saturday afternoon shifting winds to the southeast and south up to
15 knots. A dry cold frontal passage is expected late Sunday
afternoon into Sunday Night, then a surge of northeast winds follows
the frontal passage through Monday night Small Craft Advisory
conditions with the potential for Gale force gusts. High pressure
will develop over the area Tuesday, moving east of the area by
Wednesday.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Apr 17, 2026 at 0000 UTC...

 50 nautical miles east of Flagler Beach.
 62 nautical miles east of Saint Augustine Beach.
 74 nautical miles east southeast of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-180800-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
134 PM EDT Fri Apr 17 2026

.REST OF TODAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 9 seconds. Intracoastal waters light
chop.
.TONIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 8 seconds. Intracoastal waters light chop.
.SATURDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 8 seconds and southeast 2 feet at 3 seconds.
Intracoastal waters a moderate chop.
.SATURDAY NIGHT...South winds 10 to 15 knots, becoming southwest
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 4 seconds and east 2 feet at 8 seconds.
Intracoastal waters a moderate chop. Patchy fog after midnight.
.SUNDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds and east 2 feet at 8 seconds.
Intracoastal waters a moderate chop.
.SUNDAY NIGHT...North winds 20 to 25 knots, becoming northeast
25 to 30 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight. Wave Detail: Northeast 4 feet at 8 seconds, becoming
northeast 7 feet at 6 seconds. Intracoastal waters very rough. A
slight chance of showers in the evening.
.MONDAY...Northeast winds 25 to 30 knots, diminishing to 20 to
25 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to
4 to 6 feet, occasionally to 8 feet after midnight. Intracoastal
waters very rough.
.TUESDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to
3 to 4 feet, occasionally to 5 feet after midnight. Intracoastal
waters choppy.

$$

AMZ470-472-474-180800-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
134 PM EDT Fri Apr 17 2026

.REST OF TODAY...South winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 9 seconds.
.TONIGHT...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 8 seconds and south 2 feet at 3 seconds.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at
8 seconds.
.SATURDAY NIGHT...South winds 10 to 15 knots, becoming southwest
after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Southeast 3 feet at 4 seconds and east 3 feet at
8 seconds.
.SUNDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 8 seconds and south 2 feet at 5 seconds.
.SUNDAY NIGHT...Northeast winds 25 to 30 knots. Seas 3 to 5 feet,
occasionally to 6 feet, building to 5 to 8 feet, occasionally to
10 feet after midnight. Wave Detail: East 4 feet at 8 seconds,
becoming northeast 8 feet at 6 seconds. A slight chance of
thunderstorms in the evening. A chance of showers.
.MONDAY...Northeast winds 25 to 30 knots, diminishing to 20 to
25 knots. Seas 7 to 10 feet, occasionally to 13 feet, subsiding
to 5 to 7 feet, occasionally to 9 feet after midnight.
.TUESDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots. Seas 4 to 6 feet, occasionally to 8 feet.

Winds and seas higher in and near thunderstorms.

$$






695 

FZUS52 KCHS 171749
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
149 PM EDT Fri Apr 17 2026

South Santee River SC to Altamaha Sound GA out 60 NM, including
Charleston Harbor and Grays Reef National Marine Sanctuary

AMZ300-180700-
149 PM EDT Fri Apr 17 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Atlantic high pressure will prevail through Saturday. A strong
cold front will push across the waters Sunday bringing a period
of hazardous winds and seas. Improving conditions arrive Sunday
night into Monday as high pressure quickly returns.

$$

AMZ340-180700-
Charleston Harbor-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...S winds 10 kt.
.TONIGHT...SW winds 5 to 10 kt.
.SAT...S winds 5 to 10 kt.
.SAT NIGHT...S winds 10 kt.
.SUN...SW winds 10 kt, becoming W with gusts to 20 kt in the
afternoon. A slight chance of showers in the afternoon.
.SUN NIGHT...N winds 10 to 15 kt with gusts to 20 kt. A slight
chance of tstms in the evening. A slight chance of showers.
.MON...NE winds 10 to 15 kt.
.MON NIGHT...S winds 5 kt.
.TUE...NE winds 10 kt.
.TUE NIGHT...S winds 5 to 10 kt.

Winds and waves higher in and near tstms.

$$

AMZ360-180700-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...SW winds 10 kt. Seas 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 2 ft at 9 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 9 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and
SE 2 ft at 8 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds.
.SUN...SW winds 15 kt, becoming W in the afternoon. Seas 3 to
4 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 8 seconds. A
slight chance of showers in the afternoon.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Seas 3 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: E 4 ft
at 8 seconds and NW 3 ft at 5 seconds, becoming NE 5 ft at
5 seconds and SW 1 foot at 5 seconds. A slight chance of tstms in
the evening. A chance of showers.
.MON...NE winds 20 to 25 kt. Seas 4 to 6 ft.
.MON NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.

Winds and seas higher in and near tstms.

$$

AMZ362-180700-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 5 seconds and SE 2 ft at 9 seconds.
.TONIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
9 seconds and S 1 foot at 4 seconds.
.SAT...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.
.SUN...W winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
5 seconds and SE 3 ft at 8 seconds. A slight chance of showers in
the afternoon.
.SUN NIGHT...N winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight.
Wave Detail: SE 4 ft at 8 seconds and NW 3 ft at 3 seconds,
becoming NE 5 ft at 5 seconds. A slight chance of showers.
.MON...NE winds 20 to 25 kt. Seas 4 to 6 ft.
.MON NIGHT...SE winds 5 to 10 kt. Seas 4 to 5 ft.
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.

$$

AMZ364-180700-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 9 seconds.
.TONIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
9 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 4 seconds and SE 3 ft at 8 seconds.
.SUN...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds and S 2 ft at 5 seconds. A slight chance of showers
in the afternoon.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Seas 3 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft
at 8 seconds and NW 3 ft at 3 seconds, becoming NE 5 ft at
5 seconds. A slight chance of showers.
.MON...NE winds 20 to 25 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft.

$$

AMZ380-180700-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: SW 3 ft at 5 seconds and E 2 ft at 9 seconds.
.TONIGHT...SW winds 10 kt. Seas 3 ft. Wave Detail: SW 2 ft at
5 seconds and SE 2 ft at 8 seconds.
.SAT...SW winds 10 kt. Seas 3 ft. Wave Detail: S 2 ft at
4 seconds and E 2 ft at 8 seconds.
.SAT NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and E
2 ft at 8 seconds.
.SUN...SW winds 15 to 20 kt, becoming W in the afternoon. Seas
3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and E 2 ft at
8 seconds. A slight chance of showers in the afternoon.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 35 kt. Seas 4 to
6 ft, building to 6 to 8 ft after midnight. Wave Detail: NW 5 ft
at 5 seconds and E 5 ft at 8 seconds, becoming NE 8 ft at
6 seconds and SW 1 foot at 5 seconds. A slight chance of tstms in
the evening. A chance of showers.
.MON...NE winds 20 to 25 kt. Seas 6 to 8 ft.
.MON NIGHT...NE winds 5 to 10 kt. Seas 4 to 6 ft.
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 ft.

Winds and seas higher in and near tstms.

$$

AMZ382-180700-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...SW winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 9 seconds and SW 2 ft at 5 seconds.
.TONIGHT...S winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and SW 1 foot at 4 seconds.
.SAT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
8 seconds and SW 2 ft at 4 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds.
.SUN...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SW 3 ft at 5 seconds and SE 3 ft at 8 seconds. A
slight chance of showers in the afternoon.
.SUN NIGHT...N winds 20 to 25 kt, becoming NE 25 to 30 kt after
midnight. Seas 4 to 5 ft, building to 5 to 7 ft after midnight.
Wave Detail: SE 5 ft at 8 seconds and NW 4 ft at 4 seconds,
becoming NE 7 ft at 6 seconds. A slight chance of tstms in the
evening. A chance of showers.
.MON...NE winds 25 to 30 kt. Seas 7 to 9 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...NE winds 10 to 15 kt. Seas 4 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ384-180700-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
149 PM EDT Fri Apr 17 2026

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE
3 ft at 9 seconds and SW 2 ft at 4 seconds.
.TONIGHT...S winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and S 1 foot at 4 seconds.
.SAT...SW winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
8 seconds.
.SAT NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 5 seconds and SE 3 ft at 8 seconds.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 35 kt. Seas 4 to
5 ft, building to 5 to 7 ft after midnight. Wave Detail: SE 4 ft
at 8 seconds and NW 3 ft at 4 seconds, becoming N 7 ft at
6 seconds. A chance of showers.
.MON...NE winds 25 to 30 kt. Seas 7 to 9 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...NE winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft.

$$







907 

FZUS52 KJAX 171752 AAA
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia...UPDATED
National Weather Service Jacksonville FL
152 PM EDT Fri Apr 17 2026

Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.

Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.

AMZ400-180800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
152 PM EDT Fri Apr 17 2026

.SYNOPSIS...

Surface high pressure ridging will be south of the area into Saturday
night. Atlantic sea breeze expected this afternoon and Saturday
afternoon shifting winds to the southeast and south up to 15 knots.
A dry cold frontal passage is expected late Sunday afternoon into
Sunday Night, then a surge of northeast winds follows the frontal
passage through Monday night and Small Craft Advisory with the
potential for Gale force gusts are expected. High pressure will
develop over the area Tuesday, moving east of the area by
Wednesday.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Apr 17, 2026 at 0000 UTC...

 50 nautical miles east of Flagler Beach.
 62 nautical miles east of Saint Augustine Beach.
 74 nautical miles east southeast of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.

This data derived from NCEP Global RTOFS model.


$$

AMZ450-452-454-180800-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
152 PM EDT Fri Apr 17 2026

.REST OF TODAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 9 seconds. Intracoastal waters light
chop.
.TONIGHT...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 8 seconds. Intracoastal waters light chop.
.SATURDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 8 seconds and southeast 2 feet at 3 seconds.
Intracoastal waters a moderate chop.
.SATURDAY NIGHT...South winds 10 to 15 knots, becoming southwest
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 4 seconds and east 2 feet at 8 seconds.
Intracoastal waters a moderate chop. Patchy fog after midnight.
.SUNDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds and east 2 feet at 8 seconds.
Intracoastal waters a moderate chop.
.SUNDAY NIGHT...North winds 20 to 25 knots, becoming northeast
25 to 30 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight. Wave Detail: Northeast 4 feet at 8 seconds, becoming
northeast 7 feet at 6 seconds. Intracoastal waters very rough. A
slight chance of showers in the evening.
.MONDAY...Northeast winds 25 to 30 knots, diminishing to 20 to
25 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to
4 to 6 feet, occasionally to 8 feet after midnight. Intracoastal
waters very rough.
.TUESDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to
3 to 4 feet, occasionally to 5 feet after midnight. Intracoastal
waters choppy.

$$

AMZ470-472-474-180800-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
152 PM EDT Fri Apr 17 2026

.REST OF TODAY...South winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 9 seconds.
.TONIGHT...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 8 seconds and south 2 feet at 3 seconds.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at
8 seconds.
.SATURDAY NIGHT...South winds 10 to 15 knots, becoming southwest
after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Southeast 3 feet at 4 seconds and east 3 feet at
8 seconds.
.SUNDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 8 seconds and south 2 feet at 5 seconds.
.SUNDAY NIGHT...Northeast winds 25 to 30 knots. Seas 3 to 5 feet,
occasionally to 6 feet, building to 5 to 8 feet, occasionally to
10 feet after midnight. Wave Detail: East 4 feet at 8 seconds,
becoming northeast 8 feet at 6 seconds. A slight chance of
thunderstorms in the evening. A chance of showers.
.MONDAY...Northeast winds 25 to 30 knots, diminishing to 20 to
25 knots. Seas 7 to 10 feet, occasionally to 13 feet, subsiding
to 5 to 7 feet, occasionally to 9 feet after midnight.
.TUESDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots. Seas 4 to 6 feet, occasionally to 8 feet.

Winds and seas higher in and near thunderstorms.

$$