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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 190906
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
206 AM PDT Wed Aug 19 2026

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

PZZ100-192215
206 AM PDT Wed Aug 19 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...Broad high pressure over the waters will weaken Friday. A weak surface low will move into the coastal waters saturday then dissipate Saturday night. High pressure will rebuild over the waters Sunday.

PZZ150-192215
Coastal Waters From Cape Flattery To James Island Out 10 Nm
206 AM PDT Wed Aug 19 2026

TODAY
SE wind 5 to 10 kt, veering to W late. Seas 5 to 6 ft. Wave Detail: W 4 ft at 8 seconds, W 5 ft at 12 seconds and SW 2 ft at 14 seconds.

TONIGHT
NW wind around 5 kt. Seas around 5 ft. Wave Detail: NW 3 ft at 7 seconds, W 5 ft at 12 seconds and SW 2 ft at 14 seconds.

THU
S wind around 5 kt, veering to SW in the afternoon. Seas 4 to 5 ft. Wave Detail: W 5 ft at 11 seconds and SW 2 ft at 15 seconds.

THU NIGHT
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 3 ft at 8 seconds, W 4 ft at 11 seconds and SW 2 ft at 15 seconds.

FRI
SW wind around 5 kt. Seas around 4 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 15 seconds.

FRI NIGHT
SW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

SAT
S wind 5 to 10 kt. Seas around 4 ft. Wave Detail: W 4 ft at 8 seconds. Scattered showers in the morning.

SAT NIGHT
SW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

SUN
W wind around 5 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds.

SUN NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds.

PZZ153-192215
Coastal Waters From James Island To Point Grenville Out 10 Nm
206 AM PDT Wed Aug 19 2026

TODAY
S wind 5 to 10 kt, veering to W late. Seas 5 to 6 ft. Wave Detail: W 4 ft at 7 seconds, W 5 ft at 12 seconds and SW 2 ft at 14 seconds.

TONIGHT
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 4 ft at 7 seconds, W 5 ft at 12 seconds and SW 2 ft at 14 seconds.

THU
E wind around 5 kt, veering to W around 5 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: NW 3 ft at 7 seconds, W 5 ft at 11 seconds and SW 2 ft at 15 seconds.

THU NIGHT
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 9 seconds.

FRI
S wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds.

FRI NIGHT
SW wind around 5 kt, backing to S around 5 kt after midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

SAT
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds. Scattered showers in the morning.

SAT NIGHT
SW wind around 5 kt, veering to NW after midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

SUN
NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds.

SUN NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 7 seconds.

PZZ156-192215
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
206 AM PDT Wed Aug 19 2026

TODAY
W wind around 5 kt, backing to SW late this morning and early afternoon, veering to W late. Seas 4 to 6 ft. Wave Detail: W 4 ft at 7 seconds and W 4 ft at 12 seconds.

TONIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 4 ft at 8 seconds and W 5 ft at 12 seconds.

THU
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and W 5 ft at 11 seconds.

THU NIGHT
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds.

FRI
SW wind around 5 kt, veering to W in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

FRI NIGHT
SW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

SAT
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 4 seconds and W 4 ft at 8 seconds. Scattered showers in the morning.

SAT NIGHT
SW wind 5 to 10 kt, veering to NW after midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

SUN
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 7 seconds.

SUN NIGHT
NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds.

PZZ170-192215
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
206 AM PDT Wed Aug 19 2026

TODAY
N wind 10 to 15 kt, veering to NE late this morning, easing to 5 to 10 kt early this afternoon, backing to NW late. Seas 5 to 7 ft. Wave Detail: NW 5 ft at 7 seconds, W 6 ft at 12 seconds and SW 2 ft at 14 seconds.

TONIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 5 to 7 ft. Wave Detail: NW 5 ft at 7 seconds, W 6 ft at 11 seconds and SW 2 ft at 14 seconds.

THU
SW wind 5 to 10 kt, veering to W in the afternoon. Seas 5 to 6 ft. Wave Detail: NW 2 ft at 7 seconds, W 6 ft at 11 seconds and S 2 ft at 15 seconds.

THU NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after midnight. Seas around 5 ft. Wave Detail: W 5 ft at 8 seconds, W 5 ft at 11 seconds and S 2 ft at 15 seconds.

FRI
SW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and S 2 ft at 15 seconds.

FRI NIGHT
SW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and S 2 ft at 14 seconds.

SAT
SW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 8 seconds and S 2 ft at 14 seconds.

SAT NIGHT
W wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 2 ft at 3 seconds, W 4 ft at 8 seconds and S 2 ft at 14 seconds.

SUN
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds and S 2 ft at 14 seconds.

SUN NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: N 2 ft at 4 seconds, NW 3 ft at 8 seconds and S 2 ft at 14 seconds.

PZZ173-192215
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
206 AM PDT Wed Aug 19 2026

TODAY
NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: NW 6 ft at 7 seconds, W 6 ft at 12 seconds and SW 2 ft at 14 seconds.

TONIGHT
NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: NW 6 ft at 7 seconds, W 7 ft at 12 seconds and SW 2 ft at 14 seconds.

THU
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 5 ft at 8 seconds, W 6 ft at 11 seconds and SW 2 ft at 15 seconds.

THU NIGHT
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft at 9 seconds and SW 2 ft at 15 seconds.

FRI
NW wind around 5 kt, backing to SW in the afternoon. Seas around 5 ft. Wave Detail: W 5 ft at 9 seconds and S 2 ft at 15 seconds.

FRI NIGHT
W wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 9 seconds and SW 2 ft at 14 seconds.

SAT
SW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 8 seconds and S 2 ft at 14 seconds. Scattered showers in the morning.

SAT NIGHT
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 8 seconds and SW 2 ft at 14 seconds.

SUN
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 2 ft at 4 seconds, W 4 ft at 8 seconds and S 2 ft at 14 seconds.

SUN NIGHT
NW wind around 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and S 2 ft at 14 seconds.

PZZ176-192215
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
206 AM PDT Wed Aug 19 2026

TODAY
NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: NW 6 ft at 7 seconds, W 5 ft at 12 seconds and SW 2 ft at 14 seconds.

TONIGHT
NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: NW 7 ft at 8 seconds, W 5 ft at 12 seconds and SW 2 ft at 14 seconds.

THU
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 7 seconds, W 5 ft at 11 seconds and SW 2 ft at 15 seconds.

THU NIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 8 seconds, W 4 ft at 11 seconds and SW 2 ft at 15 seconds.

FRI
W wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 15 seconds.

FRI NIGHT
W wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 14 seconds.

SAT
SW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 8 seconds and SW 2 ft at 14 seconds. Scattered showers in the morning.

SAT NIGHT
NW wind around 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 8 seconds and SW 2 ft at 14 seconds.

SUN
NW wind around 10 kt. Seas 4 to 5 ft. Wave Detail: N 5 ft at 5 seconds and SW 2 ft at 14 seconds.

SUN NIGHT
NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 6 seconds and SW 2 ft at 15 seconds.

PZZ130-192215
West Entrance U.S. Waters Strait Of Juan De Fuca
206 AM PDT Wed Aug 19 2026

TODAY
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds and W 4 ft at 12 seconds.

TONIGHT
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 12 seconds.

THU
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 11 seconds.

THU NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 11 seconds.

FRI
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

FRI NIGHT
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 9 seconds.

SAT
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds. Scattered showers in the morning.

SAT NIGHT
W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 7 seconds.

SUN
W wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft at 8 seconds.

SUN NIGHT
W wind 5 to 10 kt. Seas around 2 ft or less, then around 3 ft after midnight. Wave Detail: W 2 ft at 6 seconds.

PZZ131-192215
Central U.S. Waters Strait Of Juan De Fuca
206 AM PDT Wed Aug 19 2026

TODAY
W wind 5 to 10 kt. Waves around 2 ft or less. Patchy fog this morning.

TONIGHT
W wind 10 to 15 kt. Waves around 2 ft or less.

THU
NW wind around 5 kt. Waves around 2 ft or less. Patchy fog in the morning.

THU NIGHT
W wind 10 to 15 kt. Waves around 2 ft or less.

FRI
W wind around 5 kt. Waves around 2 ft or less.

FRI NIGHT
W wind 15 to 25 kt. Waves around around 3 ft.

SAT
W wind 10 to 15 kt. Waves around 3 ft. Scattered showers.

SAT NIGHT
W wind 10 to 15 kt. Waves around 3 ft. A chance of showers.

SUN
W wind 5 to 10 kt. Waves around 2 ft or less.

SUN NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.

PZZ132-192215
East Entrance U.S. Waters Strait Of Juan De Fuca
206 AM PDT Wed Aug 19 2026

TODAY
SW wind around 5 kt. Waves around 2 ft or less.

TONIGHT
W wind 10 to 15 kt. 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
W wind around 5 kt. Waves around 2 ft or less.

FRI NIGHT
W wind 10 to 20 kt. Waves around 3 ft.

SAT
SW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Waves around 2 ft or less. Scattered showers.

SAT NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers in the evening.

SUN
SW wind 5 to 10 kt, easing to around 5 kt in the afternoon. Waves around 2 ft or less.

SUN NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.

PZZ134-192215
Admiralty Inlet
206 AM PDT Wed Aug 19 2026

TODAY
SE wind 5 to 10 kt, veering to NW this afternoon. Waves around 2 ft or less. Patchy fog this morning.

TONIGHT
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. Patchy fog in the morning.

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, rising to 5 to 10 kt in the afternoon. Waves around 2 ft or less.

FRI NIGHT
NW wind around 5 kt, backing to SW around 5 kt after midnight. Waves around 2 ft or less.

SAT
S wind 5 to 10 kt. Waves around 2 ft or less. Scattered showers.

SAT NIGHT
NW wind around 5 kt. Waves around 2 ft or less. A chance of showers.

SUN
S wind around 5 kt, backing to N around 5 kt in the afternoon. Waves around 2 ft or less.

SUN NIGHT
NW wind 5 to 10 kt. Waves around 2 ft or less.

PZZ133-192215
Northern Inland Waters Including The San Juan Islands
206 AM PDT Wed Aug 19 2026

TODAY
S wind 5 to 10 kt, veering to W this afternoon. Waves around 2 ft or less.

TONIGHT
NW wind around 5 kt. Waves around 2 ft or less.

THU
NW wind around 5 kt, backing to W in the afternoon. Waves around 2 ft or less.

THU NIGHT
W wind around 5 kt. Waves around 2 ft or less.

FRI
Light and variable winds, becoming W around 5 kt in the afternoon. Waves around 2 ft or less.

FRI NIGHT
SW wind around 5 kt, backing to S after midnight. Waves around 2 ft or less.

SAT
S wind 10 to 15 kt. Waves around 2 ft or less. Scattered showers.

SAT NIGHT
S wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers.

SUN
S wind 5 to 10 kt. Waves around 2 ft or less.

SUN NIGHT
SW wind around 5 kt. Waves around 2 ft or less.

PZZ135-192215
Puget Sound and Hood Canal
206 AM PDT Wed Aug 19 2026

TODAY
S wind to 10 kt backing to N late. Waves 1 ft or less. Patchy fog this morning.

TONIGHT
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. Patchy fog in the morning.

THU NIGHT
N wind 5 to 10 kt, easing to around 5 kt after midnight. Waves 1 ft or less.

FRI
N wind around 5 kt. Waves 1 ft or less.

FRI NIGHT
NW wind around 5 kt, backing to SW after midnight. Waves 1 ft or less.

SAT
S wind 5 to 10 kt, becoming SW 10 to 20 kt in the afternoon. Waves building to 1 to 3 ft. Scattered showers.

SAT NIGHT
SW wind 10 to 15 kt. Waves 2 ft or less. A chance of showers in the evening.

SUN
SW wind around 5 kt. Waves 1 ft or less.

SUN NIGHT
NW wind 5 to 10 kt. Waves 1 ft or less.

PZZ110-192215
Grays Harbor Bar
206 AM PDT Wed Aug 19 2026

Combined seas 2 to 4 ft. Bar conditions light. Maximum ebb currents will occur around 945 AM and 1030 PM today and 1045 AM Thursday.