491
FZUS56 KSEW 180930
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
230 AM PDT Mon Aug 18 2025

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

PZZ100-182230-
230 AM PDT Mon Aug 18 2025

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND
WATERS...Weak high pressure over the waters through Tuesday will
strengthen Tuesday night into Wednesday and remain over the waters
through Friday. A weakening system will try and move through the
high tonight dissipating over the coastal waters Tuesday.

$$

PZZ150-182230-
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
230 AM PDT Mon Aug 18 2025

.TODAY...SE wind 5 to 10 kt, becoming S 10 to 15 kt this
afternoon. Seas 4 to 5 ft. Wave Detail: W 5 ft at 9 seconds. A
slight chance of rain late this morning and early afternoon. A
chance of rain late.
.TONIGHT...SE wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SW
3 ft at 5 seconds and W 5 ft at 9 seconds. A chance of rain.
.TUE...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: S 3 ft at
5 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: 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 6 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.
.FRI...N wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft
at 6 seconds and SW 2 ft at 14 seconds.
.FRI NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
3 ft at 9 seconds.

$$

PZZ153-182230-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
230 AM PDT Mon Aug 18 2025

.TODAY...SE wind 5 to 10 kt, becoming S 10 to 15 kt this
afternoon. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds. A
slight chance of rain late this morning and early afternoon. A
chance of rain late.
.TONIGHT...SE wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W
4 ft at 9 seconds. A chance of rain after midnight.
.TUE...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at
9 seconds. A chance of rain.
.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 6 seconds.
.THU NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW
3 ft at 6 seconds.
.FRI...NW wind 5 to 10 kt. Seas around 3 ft. Wave Detail: NW 3 ft
at 6 seconds.
.FRI NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 6 seconds.

$$

PZZ156-182230-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
230 AM PDT Mon Aug 18 2025

.TODAY...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft
at 9 seconds. A slight chance of rain late.
.TONIGHT...S wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft
at 9 seconds.
.TUE...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at
9 seconds.
.TUE NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 9 seconds.
.WED...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at
8 seconds.
.WED NIGHT...NW wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 6 seconds.
.THU...N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at
6 seconds.
.THU NIGHT...N wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 6 seconds.
.FRI...N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at
6 seconds.
.FRI NIGHT...NW wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 6 seconds.

$$

PZZ170-182230-
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
230 AM PDT Mon Aug 18 2025

.TODAY...SE wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S 3 ft
at 5 seconds, W 5 ft at 10 seconds and SW 2 ft at 14 seconds. A
slight chance of rain early this morning, then a chance of rain
late this morning and afternoon.
.TONIGHT...S wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S
3 ft at 5 seconds, W 4 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
5 seconds, W 4 ft at 9 seconds and S 2 ft at 15 seconds. A chance
of rain.
.TUE NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
4 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 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW
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 and SW 2 ft at 15 seconds.
.THU NIGHT...NW wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NW
4 ft at 5 seconds and SW 2 ft at 15 seconds.
.FRI...NW wind 5 to 10 kt. Seas around 4 ft. Wave Detail: NW 4 ft
at 6 seconds and SW 2 ft at 15 seconds.
.FRI NIGHT...NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW
4 ft at 8 seconds and SW 2 ft at 14 seconds.

$$

PZZ173-182230-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
230 AM PDT Mon Aug 18 2025

.TODAY...S wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft
at 10 seconds and S 2 ft at 14 seconds. A chance of rain.
.TONIGHT...S wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S
4 ft at 5 seconds, 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
5 seconds, W 4 ft at 9 seconds and S 2 ft at 15 seconds. A chance
of rain.
.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...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft
at 8 seconds and SW 2 ft at 15 seconds.
.WED NIGHT...NW wind 10 to 15 kt. Seas around 4 ft. Wave Detail:
NW 4 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 6 seconds and SW 2 ft at 15 seconds.
.THU NIGHT...NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW
4 ft at 5 seconds and SW 2 ft at 15 seconds.
.FRI...NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft
at 6 seconds and SW 2 ft at 15 seconds.
.FRI NIGHT...NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW
4 ft at 6 seconds and SW 2 ft at 14 seconds.

$$

PZZ176-182230-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
230 AM PDT Mon Aug 18 2025

.TODAY...S wind 5 to 10 kt, rising to 10 to 15 kt late this
morning and afternoon. Seas 5 to 6 ft. Wave Detail: W 5 ft at
10 seconds and SW 2 ft at 14 seconds. A slight chance of rain
late this morning and afternoon.
.TONIGHT...S wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: W
5 ft at 9 seconds and S 2 ft at 15 seconds.
.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. A chance of rain.
.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 around 10 kt. Seas around 4 ft. Wave Detail: NW
3 ft at 8 seconds and SW 2 ft at 15 seconds.
.WED 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.
.THU...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.
.THU NIGHT...N wind around 15 kt. Seas 4 to 5 ft. Wave Detail: NW
4 ft at 6 seconds and SW 2 ft at 15 seconds.
.FRI...N wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft
at 6 seconds and SW 2 ft at 15 seconds.
.FRI NIGHT...NW wind around 15 kt. Seas 4 to 5 ft. Wave Detail:
NW 5 ft at 6 seconds and SW 2 ft at 14 seconds.

$$

PZZ130-182230-
West Entrance U.S. Waters Strait Of Juan De Fuca-
230 AM PDT Mon Aug 18 2025

.TODAY...SE wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft
at 9 seconds. A slight chance of rain.
.TONIGHT...SE wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W
3 ft at 9 seconds. A chance of rain.
.TUE...SE wind 5 to 10 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 6 seconds. A chance of rain in the evening.
.WED...W wind around 5 kt, rising to 5 to 10 kt in the afternoon.
Seas around 2 ft or less. Wave Detail: W 2 ft at 8 seconds.
.WED NIGHT...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W
2 ft at 6 seconds.
.THU...N wind around 5 kt. Seas around 2 ft or less. Wave Detail:
W 2 ft at 6 seconds.
.THU NIGHT...NW wind 5 to 10 kt. Seas around 2 ft or less. Wave
Detail: W 2 ft at 6 seconds.
.FRI...NE wind around 5 kt. Seas around 2 ft or less, then around
3 ft in the afternoon. Wave Detail: W 2 ft at 5 seconds.
.FRI NIGHT...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W
2 ft at 6 seconds.

$$

PZZ131-182230-
Central U.S. Waters Strait Of Juan De Fuca-
230 AM PDT Mon Aug 18 2025

.TODAY...Variable wind to 10 kt. Waves around 2 ft or less. A
slight chance of rain this afternoon.
.TONIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.
.TUE...W wind around 5 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 10 to 15 kt, easing to 5 to 10 kt after
midnight. Waves around 2 ft or less.
.THU...W 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.
.FRI...NW wind 5 to 10 kt, veering to NE in the afternoon. Waves
around 2 ft or less.
.FRI NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.

$$

PZZ132-182230-
East Entrance U.S. Waters Strait Of Juan De Fuca-
230 AM PDT Mon Aug 18 2025

.TODAY...Variable wind to 10 kt. Waves around 2 ft or less.
.TONIGHT...W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Waves around 2 ft or less.
.TUE...S 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 5 to 10 kt. Waves around 2 ft or less.
.WED NIGHT...W wind 10 to 15 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.
.FRI...NW wind 5 to 10 kt. Waves around 2 ft or less.
.FRI NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less.

$$

PZZ134-182230-
Admiralty Inlet-
230 AM PDT Mon Aug 18 2025

.TODAY...SE wind around 5 kt, backing to NW late. Waves around
2 ft or less.
.TONIGHT...NW wind 5 to 10 kt. Waves around 2 ft or less.
.TUE...SE wind around 5 kt, veering to NW in the afternoon. Waves
around 2 ft or less.
.TUE NIGHT...NW wind 5 to 10 kt, rising to 10 to 15 kt after
midnight. Waves around 2 ft or less.
.WED...NW wind around 5 kt, rising to 5 to 10 kt in the
afternoon. Waves around 2 ft or less.
.WED NIGHT...NW wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. 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.
.FRI...NW wind 5 to 10 kt. Waves around 2 ft or less.
.FRI NIGHT...NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.

$$

PZZ133-182230-
Northern Inland Waters Including The San Juan Islands-
230 AM PDT Mon Aug 18 2025

.TODAY...S wind around 5 kt. Waves around 2 ft or less.
.TONIGHT...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...W wind around 5 kt. Waves around 2 ft or less.
.WED...W wind around 5 kt. Waves around 2 ft or less.
.WED NIGHT...W wind around 5 kt, backing to SE 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.
.FRI...NW wind around 5 kt. Waves around 2 ft or less.
.FRI NIGHT...W wind around 5 kt. Waves around 2 ft or less.

$$

PZZ135-182230-
Puget Sound and Hood Canal-
230 AM PDT Mon Aug 18 2025

.TODAY...Variable wind less than 10 kt. Waves 1 ft or less.
.TONIGHT...SW wind 5 to 10 kt. Waves 1 ft or less.
.TUE...SW wind around 5 kt. Waves 1 ft or less.
.TUE NIGHT...NW wind around 5 kt. Waves 1 ft or less.
.WED...N wind around 5 kt. Waves 1 ft or less.
.WED NIGHT...N wind 5 to 10 kt. Waves 1 ft or less.
.THU...N wind around 5 kt, rising to 5 to 10 kt in the afternoon.
Waves 1 ft or less.
.THU NIGHT...N wind 5 to 10 kt. Waves 1 ft or less.
.FRI...N wind 5 to 10 kt. Waves 1 ft or less.
.FRI NIGHT...N wind 5 to 10 kt. Waves 1 ft or less.

$$

PZZ110-182230-
Grays Harbor Bar-
230 AM PDT Mon Aug 18 2025

Combined seas 3 to 5 ft. Bar conditions light. Maximum ebb
currents will occur around 115 PM today and 145 AM and 230 PM Tuesday.

$$