Coastal Waters Forecast
Issued by NWS Seattle/Tacoma, WA

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FZUS56 KSEW 171423 AAA
CWFSEW

Coastal Waters Forecast for Washington...UPDATED
National Weather Service Seattle WA
723 AM PDT Sun Aug 17 2025

Inland waters of western Washington and the northern and central
Washington coastal waters including the Olympic Coast National
Marine Sanctuary

PZZ100-180330-
723 AM PDT Sun Aug 17 2025

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND
WATERS...High pressure will briefly build back over the waters today
then dissipate tonight into Monday. A weak system will fall apart
over the coastal waters Monday night. High pressure will build
Tuesday and remain over the waters through Thursday.

$$

PZZ150-180330-
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
723 AM PDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

.REST OF TODAY...S wind around 5 kt. Seas 9 to 10 ft, subsiding
to 6 to 9 ft this afternoon. Wave Detail: W 7 ft at 10 seconds
and SW 2 ft at 14 seconds. Patchy dense fog early this morning. A
slight chance of rain this afternoon.
.TONIGHT...SE wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds.
.MON...SE wind 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: W 5 ft at 9 seconds. A
chance of rain.
.MON NIGHT...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds. A chance of rain.
.TUE...S wind 5 to 10 kt. Seas around 4 ft. Wave Detail: SW 3 ft
at 6 seconds and W 4 ft at 9 seconds. A chance of rain.
.TUE NIGHT...NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW
2 ft at 6 seconds and W 3 ft at 9 seconds.
.WED...NW wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft
at 8 seconds.
.WED NIGHT...NW wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W
3 ft at 8 seconds and SW 2 ft at 15 seconds.
.THU...N wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft
at 7 seconds and SW 2 ft at 15 seconds.
.THU NIGHT...NW wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W
3 ft at 6 seconds and SW 2 ft at 15 seconds.

$$

PZZ153-180330-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
723 AM PDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

.REST OF TODAY...SE wind around 5 kt, veering to S around 5 kt
late. Seas 8 to 10 ft, subsiding to 6 to 9 ft this afternoon.
Wave Detail: W 6 ft at 10 seconds. A slight chance of rain late
this morning and early afternoon.
.TONIGHT...S wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds.
.MON...SE wind 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds. A
chance of rain in the afternoon.
.MON NIGHT...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W
4 ft at 9 seconds. A chance of rain.
.TUE...SE wind 5 to 10 kt, veering to S in the afternoon. Seas
3 to 4 ft. Wave Detail: W 4 ft at 9 seconds. A chance of rain in
the morning.
.TUE NIGHT...NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W
3 ft at 9 seconds.
.WED...NW wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft
at 8 seconds.
.WED NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
3 ft at 8 seconds.
.THU...N wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft
at 7 seconds and SW 2 ft at 15 seconds.
.THU NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW
3 ft at 6 seconds.

$$

PZZ156-180330-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
723 AM PDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

.REST OF TODAY...S wind around 5 kt, veering to SW late. Seas
8 to 10 ft, subsiding to 6 to 9 ft this afternoon. Wave Detail: W
7 ft at 10 seconds. Patchy dense fog early this morning.
.TONIGHT...W wind around 5 kt, backing to S after midnight. Seas
4 to 6 ft. Wave Detail: W 5 ft at 10 seconds.
.MON...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at
9 seconds. A chance of rain in the afternoon.
.MON NIGHT...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds.
.TUE...SE wind around 5 kt, veering to SW in the afternoon. Seas
3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.
.TUE NIGHT...NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 9 seconds.
.WED...NW wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft
at 8 seconds.
.WED NIGHT...NW wind around 10 kt. Seas 3 to 4 ft. Wave Detail:
NW 3 ft at 4 seconds and W 3 ft at 8 seconds.
.THU...N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at
5 seconds and W 3 ft at 10 seconds.
.THU NIGHT...NW wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NW
3 ft at 7 seconds.

$$

PZZ170-180330-
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
723 AM PDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

.REST OF TODAY...S wind 5 to 10 kt. Seas 9 to 10 ft, subsiding to
7 to 10 ft this afternoon. Wave Detail: W 7 ft at 10 seconds and
SW 2 ft at 14 seconds. A slight chance of rain late this morning
and afternoon.
.TONIGHT...S wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft
at 9 seconds and SW 2 ft at 14 seconds. A chance of rain after
midnight.
.MON...SE wind 10 to 15 kt. Seas around 5 ft. Wave Detail: W 5 ft
at 10 seconds and SW 2 ft at 14 seconds. A chance of rain in the
morning, then rain likely in the afternoon.
.MON NIGHT...S wind 10 to 15 kt. Seas around 5 ft. Wave Detail: W
5 ft at 9 seconds and S 2 ft at 15 seconds. Rain likely, mainly
in the evening.
.TUE...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: S 3 ft at
6 seconds, W 3 ft at 9 seconds and S 2 ft at 15 seconds. A chance
of rain.
.TUE NIGHT...NW wind around 5 kt. Seas around 4 ft. Wave Detail:
SW 2 ft at 6 seconds, W 3 ft at 9 seconds and SW 2 ft at
15 seconds.
.WED...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at
8 seconds and SW 2 ft at 15 seconds.
.WED NIGHT...NW wind around 10 kt. Seas 3 to 4 ft. Wave Detail: W
3 ft at 8 seconds and SW 2 ft at 15 seconds.
.THU...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft
at 6 seconds, W 3 ft at 10 seconds and SW 2 ft at 15 seconds.
.THU NIGHT...NW wind around 10 kt. Seas 3 to 4 ft. Wave Detail:
NW 3 ft at 6 seconds and SW 2 ft at 15 seconds.

$$

PZZ173-180330-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
723 AM PDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

.REST OF TODAY...S wind 5 to 10 kt. Seas 7 to 10 ft. Wave Detail:
W 7 ft at 10 seconds and SW 2 ft at 14 seconds. A slight chance
of rain early this afternoon.
.TONIGHT...S wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft
at 9 seconds and SW 2 ft at 14 seconds.
.MON...S wind 10 to 15 kt. Seas around 5 ft. Wave Detail: W 5 ft
at 10 seconds and SW 2 ft at 14 seconds. A chance of rain.
.MON NIGHT...S wind 10 to 15 kt. Seas around 5 ft. Wave Detail: W
5 ft at 9 seconds and S 2 ft at 15 seconds. A chance of rain.
.TUE...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: S 3 ft at
6 seconds, W 4 ft at 9 seconds and S 2 ft at 15 seconds. A chance
of rain in the morning.
.TUE NIGHT...NW wind 5 to 10 kt. Seas around 4 ft. Wave Detail:
SW 2 ft at 5 seconds, W 3 ft at 9 seconds and SW 2 ft at
15 seconds.
.WED...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at
8 seconds and SW 2 ft at 15 seconds.
.WED NIGHT...NW wind around 10 kt. Seas around 4 ft. Wave Detail:
NW 3 ft at 5 seconds, W 3 ft at 8 seconds and SW 2 ft at
15 seconds.
.THU...NW wind 5 to 10 kt. Seas around 4 ft. Wave Detail: NW 4 ft
at 7 seconds, W 2 ft at 10 seconds and SW 2 ft at 15 seconds.
.THU NIGHT...NW wind 10 to 15 kt. Seas around 4 ft. Wave Detail:
NW 4 ft at 6 seconds and SW 2 ft at 15 seconds.

$$

PZZ176-180330-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
723 AM PDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM PDT THIS AFTERNOON...

.REST OF TODAY...S wind around 5 kt. Seas 7 to 10 ft. Wave
Detail: W 7 ft at 10 seconds and SW 2 ft at 14 seconds.
.TONIGHT...S wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft
at 9 seconds and SW 2 ft at 14 seconds.
.MON...S wind 10 to 15 kt. Seas around 5 ft. Wave Detail: W 5 ft
at 10 seconds and SW 2 ft at 14 seconds. A chance of rain.
.MON NIGHT...S wind around 10 kt. Seas around 5 ft. Wave Detail:
W 5 ft at 10 seconds and S 2 ft at 15 seconds. A chance of rain
in the evening.
.TUE...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at
9 seconds and S 2 ft at 15 seconds.
.TUE NIGHT...NW wind 5 to 10 kt. Seas around 4 ft. Wave Detail: W
4 ft at 9 seconds and SW 2 ft at 15 seconds.
.WED...N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at
8 seconds and SW 2 ft at 15 seconds.
.WED NIGHT...N wind around 10 kt. Seas around 4 ft. Wave Detail:
NW 3 ft at 4 seconds, NW 3 ft at 8 seconds and SW 2 ft at
15 seconds.
.THU...N wind around 10 kt. Seas around 4 ft. Wave Detail: NW
4 ft at 7 seconds, W 2 ft at 10 seconds and SW 2 ft at
15 seconds.
.THU NIGHT...N wind 10 to 15 kt. Seas around 4 ft. Wave Detail:
NW 4 ft at 6 seconds and SW 2 ft at 15 seconds.

$$

PZZ130-180330-
West Entrance U.S. Waters Strait Of Juan De Fuca-
723 AM PDT Sun Aug 17 2025

.REST OF TODAY...SE wind around 5 kt, veering to W late. Seas
3 to 5 ft. Wave Detail: W 5 ft at 10 seconds. Patchy dense fog
early this morning. A slight chance of rain early this morning. A
chance of rain early this afternoon, then a slight chance of rain
late.
.TONIGHT...W wind around 5 kt, backing to S after midnight. Seas
3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.
.MON...SE wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at
9 seconds. A chance of rain in the afternoon.
.MON NIGHT...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
3 ft at 9 seconds. A chance of rain.
.TUE...SE wind around 5 kt, veering to SW in the afternoon. Seas
around 3 ft. Wave Detail: W 2 ft at 9 seconds. A chance of rain.
.TUE NIGHT...W wind around 5 kt. Seas around 3 ft. Wave Detail: W
2 ft at 9 seconds.
.WED...W wind around 5 kt, rising to 5 to 10 kt in the afternoon.
Seas around 3 ft in the morning, then around 2 ft or less. Wave
Detail: W 2 ft at 8 seconds.
.WED NIGHT...W wind 5 to 10 kt, easing to around 5 kt after
midnight. Seas around 2 ft or less, then around 3 ft after
midnight. Wave Detail: W 2 ft at 8 seconds.
.THU...NE wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft
at 7 seconds.
.THU NIGHT...NW wind around 5 kt. Seas around 2 ft or less. Wave
Detail: W 2 ft at 5 seconds.

$$

PZZ131-180330-
Central U.S. Waters Strait Of Juan De Fuca-
723 AM PDT Sun Aug 17 2025

.REST OF TODAY...W wind around 5 kt, backing to S early this
afternoon, veering to W late. Waves around 2 ft or less. Patchy
dense fog early this morning. A slight chance of rain early this
morning. A slight chance of rain this afternoon.
.TONIGHT...W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Waves around 2 ft or less.
.MON...W wind 5 to 10 kt. Waves around 2 ft or less.
.MON NIGHT...W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Waves around 2 ft or less. A chance of rain in the
evening.
.TUE...SW wind 5 to 10 kt. Waves around 2 ft or less.
.TUE NIGHT...W wind 10 to 15 kt. Waves around 2 ft or less.
.WED...W wind 5 to 10 kt. Waves around 2 ft or less.
.WED NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.
.THU...NW wind 5 to 10 kt, veering to NE in the afternoon. Waves
around 2 ft or less.
.THU NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.

$$

PZZ132-180330-
East Entrance U.S. Waters Strait Of Juan De Fuca-
723 AM PDT Sun Aug 17 2025

.REST OF TODAY...S wind around 5 kt, veering to W late. Waves
around 2 ft or less. A slight chance of rain early this morning.
A slight chance of rain this afternoon.
.TONIGHT...W wind 10 to 15 kt. Waves around 2 ft or less.
.MON...S wind around 5 kt. Waves around 2 ft or less.
.MON NIGHT...W wind 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Waves around 2 ft or less.
.TUE...SW wind around 5 kt. Waves around 2 ft or less.
.TUE NIGHT...W wind 10 to 15 kt. Waves around 2 ft or less, then
around 3 ft after midnight.
.WED...W wind around 5 kt. Waves around 2 ft or less.
.WED NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.
.THU...NW wind 5 to 10 kt. Waves around 2 ft or less.
.THU NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.

$$

PZZ134-180330-
Admiralty Inlet-
723 AM PDT Sun Aug 17 2025

.REST OF TODAY...SE wind around 5 kt, backing to N this
afternoon. Waves around 2 ft or less. A slight chance of rain
early this morning. A slight chance of rain this afternoon.
.TONIGHT...NW wind 5 to 10 kt. Waves around 2 ft or less.
.MON...S wind around 5 kt. Waves around 2 ft or less.
.MON NIGHT...NW wind 5 to 10 kt, backing to W after midnight.
Waves around 2 ft or less.
.TUE...S wind around 5 kt, veering to N around 5 kt in the
afternoon. Waves around 2 ft or less.
.TUE NIGHT...NW wind 10 to 15 kt. Waves around 2 ft or less.
.WED...W wind around 5 kt, veering to NW in the afternoon. Waves
around 2 ft or less.
.WED NIGHT...NW wind 5 to 10 kt. Waves around 2 ft or less.
.THU...NW wind 5 to 10 kt. Waves around 2 ft or less.
.THU NIGHT...NW wind 5 to 10 kt. Waves around 2 ft or less.

$$

PZZ133-180330-
Northern Inland Waters Including The San Juan Islands-
723 AM PDT Sun Aug 17 2025

.REST OF TODAY...S wind around 5 kt. Waves around 2 ft or less. A
slight chance of rain early this morning.
.TONIGHT...S wind around 5 kt. Waves around 2 ft or less.
.MON...S wind around 5 kt. Waves around 2 ft or less.
.MON NIGHT...S wind around 5 kt. Waves around 2 ft or less.
.TUE...S wind around 5 kt. Waves around 2 ft or less.
.TUE NIGHT...SW wind around 5 kt. Waves around 2 ft or less.
.WED...W wind around 5 kt. Waves around 2 ft or less.
.WED NIGHT...SW wind around 5 kt, veering to NE after midnight.
Waves around 2 ft or less.
.THU...NW wind around 5 kt. Waves around 2 ft or less.
.THU NIGHT...NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.

$$

PZZ135-180330-
Puget Sound and Hood Canal-
723 AM PDT Sun Aug 17 2025

.REST OF TODAY...S wind around 5 kt, veering to W late. Waves
around 2 ft or less.
.TONIGHT...NW wind 5 to 10 kt, becoming NE after midnight. Waves
around 2 ft or less.
.MON...S wind around 5 kt, veering to SW in the afternoon. Waves
around 2 ft or less.
.MON NIGHT...W wind 5 to 10 kt, backing to SE after midnight.
Waves around 2 ft or less.
.TUE...S wind around 5 kt, veering to NW in the afternoon. Waves
around 2 ft or less.
.TUE NIGHT...N wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.
.WED...NW wind around 5 kt. Waves around 2 ft or less.
.WED NIGHT...N wind 5 to 10 kt. Waves around 2 ft or less.
.THU...N wind around 5 kt, rising to 5 to 10 kt in the afternoon.
Waves around 2 ft or less.
.THU NIGHT...N wind 5 to 10 kt. Waves around 2 ft or less.

$$

PZZ110-180330-
Grays Harbor Bar-
723 AM PDT Sun Aug 17 2025

Combined seas 6 to 8 ft subsiding to 4 to 6 ft tonight. Bar
conditions moderate becoming light tonight. Maximum ebb currents
will occur around 1200 PM today and 1245 AM and 115 PM Monday.

$$