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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 170841
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
141 AM PDT Fri Jul 17 2026

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

PZZ100-172145
141 AM PDT Fri Jul 17 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...Weak surface low pressure over the coastal waters today will dissipate on Saturday as a broad surface ridge centered well offshore expands eastward. Thermally induced surface low pressure is expected to expand across the interior of Western Washington Monday through Wednesday. This will lead to varying degrees of onshore flow into the middle portion of the coming week.

PZZ150-172145
Coastal Waters From Cape Flattery To James Island Out 10 Nm
141 AM PDT Fri Jul 17 2026

TODAY
S wind 10 to 15 kt, easing to 5 to 10 kt late. Seas 4 to 5 ft. Wave Detail: S 3 ft at 5 seconds, W 3 ft at 7 seconds and W 4 ft at 13 seconds.

TONIGHT
S wind around 5 kt, veering to W after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 11 seconds and W 4 ft at 15 seconds.

SAT
W wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 9 seconds and W 2 ft at 15 seconds.

SAT NIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 5 to 6 ft. Wave Detail: W 6 ft at 9 seconds and W 2 ft at 15 seconds.

SUN
S wind around 5 kt, veering to NW in the afternoon. Seas 5 to 6 ft. Wave Detail: W 6 ft at 8 seconds.

SUN NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after midnight. Seas 5 to 6 ft. Wave Detail: W 5 ft at 8 seconds.

MON
N wind around 5 kt, backing to NW in the afternoon. Seas 4 to 6 ft. Wave Detail: W 5 ft at 8 seconds.

MON NIGHT
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 8 seconds and SW 2 ft at 17 seconds.

TUE
S wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 8 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
W wind around 5 kt, backing to SW after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 15 seconds.

PZZ153-172145
Coastal Waters From James Island To Point Grenville Out 10 Nm
141 AM PDT Fri Jul 17 2026

TODAY
SE wind around 10 kt, veering to SW late. Seas 4 to 5 ft. Wave Detail: W 3 ft at 7 seconds, S 2 ft at 8 seconds and W 4 ft at 14 seconds.

TONIGHT
W wind around 5 kt, rising to 5 to 10 kt after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and W 3 ft at 15 seconds.

SAT
NW wind around 5 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and W 2 ft at 15 seconds.

SAT NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 8 seconds and W 2 ft at 15 seconds.

SUN
N wind 5 to 10 kt, backing to NW in the afternoon. Seas 4 to 6 ft. Wave Detail: W 5 ft at 8 seconds.

SUN NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 8 seconds.

MON
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 8 seconds. Patchy fog in the morning.

MON NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after midnight. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 8 seconds.

TUE
N wind around 5 kt, backing to W around 5 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 8 seconds.

TUE NIGHT
NW wind around 5 kt. Seas around 4 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 15 seconds. Patchy fog after midnight.

PZZ156-172145
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
141 AM PDT Fri Jul 17 2026

TODAY
S wind 5 to 10 kt, veering to SW late. Seas 4 to 5 ft. Wave Detail: S 2 ft at 6 seconds, W 4 ft at 8 seconds and W 4 ft at 16 seconds.

TONIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 11 seconds and W 4 ft at 15 seconds.

SAT
NW wind around 5 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: W 5 ft at 10 seconds and W 2 ft at 15 seconds.

SAT NIGHT
NW wind 15 to 20 kt. Seas 5 to 8 ft. Wave Detail: N 7 ft at 7 seconds and W 2 ft at 15 seconds.

SUN
N wind 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 8 seconds.

SUN NIGHT
NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: NW 7 ft at 8 seconds.

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

MON NIGHT
NW wind around 10 kt, easing to around 5 kt after midnight. Seas 4 to 6 ft. Wave Detail: N 2 ft at 4 seconds and NW 5 ft at 8 seconds.

TUE
N wind around 5 kt, backing to NW in the afternoon. Seas 4 to 5 ft. Wave Detail: W 4 ft at 8 seconds.

TUE NIGHT
NW wind 5 to 10 kt, becoming W after midnight. Seas 4 to 5 ft. Wave Detail: W 5 ft at 9 seconds.

PZZ170-172145
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
141 AM PDT Fri Jul 17 2026

TODAY
S wind 5 to 10 kt. Seas around 5 ft. Wave Detail: W 4 ft at 7 seconds, S 2 ft at 12 seconds and W 5 ft at 13 seconds.

TONIGHT
W wind 5 to 10 kt. Seas around 5 ft. Wave Detail: W 5 ft at 11 seconds, S 2 ft at 12 seconds and W 4 ft at 16 seconds.

SAT
NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: W 5 ft at 10 seconds and W 2 ft at 15 seconds.

SAT NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: N 3 ft at 5 seconds, NW 7 ft at 8 seconds and W 2 ft at 15 seconds.

SUN
NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 8 seconds and SW 2 ft at 18 seconds.

SUN NIGHT
NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: NW 7 ft at 8 seconds and SW 2 ft at 17 seconds.

MON
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 8 seconds and SW 2 ft at 17 seconds.

MON NIGHT
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 8 seconds and SW 2 ft at 17 seconds.

TUE
W wind around 5 kt. Seas around 5 ft. Wave Detail: NW 5 ft at 8 seconds and SW 2 ft at 17 seconds.

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

PZZ173-172145
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
141 AM PDT Fri Jul 17 2026

TODAY
SW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 10 seconds and NW 4 ft at 13 seconds.

TONIGHT
W wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NE 2 ft at 4 seconds, NW 6 ft at 10 seconds and W 4 ft at 16 seconds.

SAT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NE 3 ft at 5 seconds, NW 6 ft at 10 seconds and W 2 ft at 15 seconds.

SAT NIGHT
NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: NE 4 ft at 5 seconds, NW 8 ft at 8 seconds and W 2 ft at 15 seconds.

SUN
NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave Detail: NE 3 ft at 5 seconds, NW 8 ft at 8 seconds and W 2 ft at 14 seconds.

SUN NIGHT
NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave Detail: NE 4 ft at 5 seconds, NW 8 ft at 8 seconds and SW 2 ft at 18 seconds.

MON
NW wind 5 to 10 kt. Seas 5 to 8 ft. Wave Detail: NE 2 ft at 4 seconds, NW 6 ft at 8 seconds and SW 2 ft at 17 seconds.

MON NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: N 3 ft at 4 seconds, NW 5 ft at 8 seconds and SW 2 ft at 17 seconds.

TUE
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 6 ft at 8 seconds and SW 2 ft at 16 seconds.

TUE NIGHT
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 9 seconds and S 2 ft at 15 seconds.

PZZ176-172145
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
141 AM PDT Fri Jul 17 2026

TODAY
SW wind 5 to 10 kt, veering to W late. Seas 5 to 6 ft. Wave Detail: NW 4 ft at 7 seconds and NW 5 ft at 13 seconds.

TONIGHT
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 11 seconds and W 5 ft at 16 seconds.

SAT
NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: N 2 ft at 5 seconds, NW 6 ft at 10 seconds and W 2 ft at 15 seconds.

SAT NIGHT
NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: N 7 ft at 7 seconds, W 2 ft at 15 seconds and SW 2 ft at 16 seconds.

SUN
NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave Detail: N 8 ft at 7 seconds, W 2 ft at 15 seconds and SW 2 ft at 18 seconds.

SUN NIGHT
NW wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: NE 2 ft at 5 seconds, NW 8 ft at 8 seconds and SW 2 ft at 17 seconds.

MON
NW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 6 ft in the afternoon. Wave Detail: NW 7 ft at 8 seconds and SW 2 ft at 17 seconds.

MON NIGHT
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 8 seconds and SW 2 ft at 17 seconds.

TUE
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 8 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 9 seconds and S 2 ft at 15 seconds.

PZZ130-172145
West Entrance U.S. Waters Strait Of Juan De Fuca
141 AM PDT Fri Jul 17 2026

TODAY
E wind around 5 kt, backing to NW this afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and W 3 ft at 12 seconds.

TONIGHT
W wind 5 to 10 kt, easing to around 5 kt after midnight. Seas 3 to 4 ft. Wave Detail: W 3 ft at 10 seconds and W 3 ft at 15 seconds.

SAT
W wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

SAT NIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: W 5 ft at 8 seconds.

SUN
S wind around 5 kt, veering to NW in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

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

MON
E wind around 5 kt, backing to NW in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

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

TUE
S wind around 5 kt, veering to W around 5 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

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

PZZ131-172145
Central U.S. Waters Strait Of Juan De Fuca
141 AM PDT Fri Jul 17 2026

TODAY
W wind 5 to 10 kt, becoming NW late this morning, backing to SW early this afternoon, veering to W 10 to 15 kt late. Waves around 2 ft or less.

TONIGHT
W wind 10 to 15 kt. Waves around 3 ft.

SAT
W wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less, then around 3 ft in the afternoon.

SAT NIGHT
W wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Waves 3 to 4 ft.

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

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

MON
NW wind around 5 kt, veering to NE in the afternoon. Waves around 2 ft or less.

MON NIGHT
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 5 to 10 kt. Waves around 2 ft or less.

PZZ132-172145
East Entrance U.S. Waters Strait Of Juan De Fuca
141 AM PDT Fri Jul 17 2026

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

TONIGHT
W wind 10 to 15 kt. Waves around 3 ft.

SAT
SW wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Waves around 2 ft or less.

SAT NIGHT
W wind 15 to 20 kt. Waves 3 to 4 ft.

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

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

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

MON NIGHT
W wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less.

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

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

PZZ134-172145
Admiralty Inlet
141 AM PDT Fri Jul 17 2026

TODAY
SE wind 5 to 10 kt, backing to NW late. Waves around 2 ft or less.

TONIGHT
NW wind 5 to 10 kt, backing to W after midnight. Waves around 2 ft or less.

SAT
S wind around 5 kt, veering to NW in the afternoon. Waves around 2 ft or less.

SAT NIGHT
NW wind 10 to 15 kt. Waves around 2 ft or less.

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

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

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

MON NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less.

TUE
Light and variable winds, becoming NW 5 to 10 kt in the afternoon. Waves around 2 ft or less.

TUE NIGHT
NW wind 5 to 10 kt, becoming W after midnight. Waves around 2 ft or less.

PZZ133-172145
Northern Inland Waters Including The San Juan Islands
141 AM PDT Fri Jul 17 2026

TODAY
S wind 5 to 10 kt, easing to around 5 kt late. Waves around 2 ft or less.

TONIGHT
SW wind 5 to 10 kt, becoming S after midnight. Waves around 2 ft or less.

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

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

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

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

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

MON NIGHT
W wind around 5 kt, backing to SE after midnight. Waves around 2 ft or less.

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

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

PZZ135-172145
Puget Sound and Hood Canal
141 AM PDT Fri Jul 17 2026

TODAY
S wind 5 to 10 kt, veering to SW late. Waves around 2 ft or less.

TONIGHT
NW wind 5 to 10 kt, becoming S after midnight. Waves around 2 ft or less.

SAT
S wind around 5 kt, veering to NW in the afternoon. Waves around 2 ft or less. Patchy fog in the morning.

SAT NIGHT
N wind 5 to 10 kt, becoming NE after midnight. Waves around 2 ft or less. Patchy fog after midnight.

SUN
N wind around 5 kt, rising to 5 to 10 kt in the afternoon. Waves around 2 ft or less. Patchy fog in the morning.

SUN NIGHT
N wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less.

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

MON NIGHT
N wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less.

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

TUE NIGHT
NW wind around 5 kt. Waves around 2 ft or less.

PZZ110-172145
Grays Harbor Bar
141 AM PDT Fri Jul 17 2026

Combined seas 3 to 5 feet. Bar conditions light. Maximum ebb currents will occur around 715 AM Friday, 800 PM Friday, and 800 AM Saturday. The Friday morning ebb will be strong.