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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 040934
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
234 AM PDT Thu Sep 4 2025

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

PZZ100-042245
234 AM PDT Thu Sep 4 2025

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...Weak high pressure will remain over the coastal waters through today, with fog expected in portions of the coastal waters. The high will weaken Friday and Saturday as a surface low moves over area waters. Weak high pressure briefly rebuilds over the waters on Sunday. Another low pressure system will approach the waters on Monday.

PZZ150-042245
Coastal Waters From Cape Flattery To James Island Out 10 Nm
234 AM PDT Thu Sep 4 2025

DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING

TODAY
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 7 seconds, W 2 ft at 12 seconds and SW 2 ft at 14 seconds. Widespread dense fog this morning.

TONIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 6 seconds and W 2 ft at 11 seconds.

FRI
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 6 seconds and W 2 ft at 11 seconds.

FRI NIGHT
W wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft at 6 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds.

SAT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 2 ft at 5 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A chance of showers in the afternoon.

SAT NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 2 ft at 5 seconds, SW 2 ft at 8 seconds and W 3 ft at 11 seconds. A chance of showers.

SUN
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW 2 ft at 8 seconds and W 2 ft at 11 seconds. A chance of showers.

SUN NIGHT
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 7 seconds, W 2 ft at 10 seconds and SW 2 ft at 13 seconds. A chance of showers.

MON
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 7 seconds and SW 2 ft at 13 seconds. A chance of showers.

MON NIGHT
SW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds, W 2 ft at 13 seconds and SW 2 ft at 13 seconds. A chance of showers in the evening, then showers likely after midnight.

PZZ153-042245
Coastal Waters From James Island To Point Grenville Out 10 Nm
234 AM PDT Thu Sep 4 2025

DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING

TODAY
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 7 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A slight chance of showers this morning. Widespread dense fog this morning.

TONIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and W 2 ft at 11 seconds.

FRI
NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 6 seconds and W 2 ft at 11 seconds.

FRI NIGHT
NW wind around 5 kt. Seas around 3 ft. Wave Detail: NW 2 ft at 6 seconds, SW 2 ft at 9 seconds and W 2 ft at 11 seconds.

SAT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A chance of showers.

SAT NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 8 seconds and W 2 ft at 12 seconds. A chance of showers in the evening, then showers likely after midnight.

SUN
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW 2 ft at 8 seconds and W 2 ft at 11 seconds. A chance of showers.

SUN NIGHT
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 7 seconds and W 2 ft at 10 seconds. A chance of showers.

MON
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 7 seconds. A chance of showers in the morning, then showers likely in the afternoon.

MON NIGHT
SW wind around 5 kt, backing to SE after midnight. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and W 2 ft at 13 seconds. Showers likely.

PZZ156-042245
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
234 AM PDT Thu Sep 4 2025

DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING

TODAY
NW wind around 10 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and W 2 ft at 12 seconds. A slight chance of showers early this morning. Widespread dense fog this morning.

TONIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 6 seconds and W 2 ft at 12 seconds.

FRI
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 6 seconds and W 2 ft at 11 seconds.

FRI NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 6 seconds, SW 2 ft at 9 seconds and W 2 ft at 11 seconds. A chance of showers after midnight.

SAT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 6 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A chance of showers.

SAT NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 8 seconds and W 2 ft at 12 seconds. Showers likely, mainly in the evening.

SUN
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 2 ft at 8 seconds and W 2 ft at 11 seconds. A chance of showers.

SUN NIGHT
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 7 seconds and W 2 ft at 10 seconds. A chance of showers.

MON
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 3 ft at 7 seconds. A chance of showers in the morning, then showers likely in the afternoon.

MON NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and W 2 ft at 13 seconds. Showers likely.

PZZ170-042245
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
234 AM PDT Thu Sep 4 2025

TODAY
NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: NW 4 ft at 7 seconds, W 2 ft at 12 seconds and SW 2 ft at 15 seconds. A slight chance of showers this morning. Widespread dense fog this morning.

TONIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 6 seconds, W 2 ft at 11 seconds and S 2 ft at 15 seconds.

FRI
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 6 seconds, W 2 ft at 11 seconds and S 2 ft at 15 seconds.

FRI NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 6 seconds, SW 2 ft at 9 seconds and W 2 ft at 11 seconds.

SAT
SW wind around 5 kt. Seas around 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A chance of showers in the afternoon.

SAT NIGHT
S wind around 5 kt. Seas around 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 8 seconds and W 3 ft at 12 seconds. A chance of showers.

SUN
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 2 ft at 8 seconds, W 2 ft at 10 seconds and S 2 ft at 14 seconds. A chance of showers.

SUN NIGHT
S wind around 5 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 7 seconds, W 2 ft at 10 seconds and S 2 ft at 14 seconds. A chance of showers.

MON
SE wind around 5 kt. Seas around 3 ft. Wave Detail: S 2 ft at 7 seconds and S 2 ft at 13 seconds. A chance of showers.

MON NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds, W 2 ft at 13 seconds and S 2 ft at 13 seconds. A chance of showers.

PZZ173-042245
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
234 AM PDT Thu Sep 4 2025

TODAY
NW wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 7 seconds, SW 2 ft at 8 seconds and W 2 ft at 12 seconds. A slight chance of showers this morning. Widespread dense fog early this morning. Patchy dense fog late this morning.

TONIGHT
NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 7 seconds, W 2 ft at 11 seconds and S 2 ft at 15 seconds.

FRI
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 6 seconds, W 2 ft at 11 seconds and S 2 ft at 15 seconds.

FRI NIGHT
NW wind 5 to 10 kt. Seas around 4 ft. Wave Detail: NW 3 ft at 6 seconds, SW 2 ft at 9 seconds and W 2 ft at 11 seconds.

SAT
SW wind 5 to 10 kt. Seas around 4 ft. Wave Detail: NW 3 ft at 5 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A chance of showers in the afternoon.

SAT NIGHT
SW wind around 5 kt. Seas around 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 8 seconds and W 3 ft at 12 seconds. A chance of showers.

SUN
S wind 5 to 10 kt. Seas around 4 ft. Wave Detail: SW 2 ft at 8 seconds, W 2 ft at 11 seconds and S 2 ft at 14 seconds. A chance of showers.

SUN NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 6 seconds, W 2 ft at 10 seconds and S 2 ft at 14 seconds. A chance of showers.

MON
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds, S 2 ft at 13 seconds and W 2 ft at 14 seconds. A chance of showers in the morning, then showers likely in the afternoon.

MON NIGHT
W wind 5 to 10 kt. Seas around 4 ft. Wave Detail: SW 3 ft at 7 seconds, NW 2 ft at 8 seconds and S 2 ft at 13 seconds. A chance of showers.

PZZ176-042245
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
234 AM PDT Thu Sep 4 2025

TODAY
NW wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 7 seconds, SW 2 ft at 8 seconds and W 2 ft at 12 seconds. A slight chance of showers this morning. Widespread dense fog this morning.

TONIGHT
NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 7 seconds, W 2 ft at 12 seconds and SW 2 ft at 15 seconds.

FRI
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 6 seconds, W 2 ft at 11 seconds and S 2 ft at 15 seconds.

FRI NIGHT
NW wind 5 to 10 kt. Seas around 4 ft. Wave Detail: W 3 ft at 7 seconds, W 2 ft at 11 seconds and S 2 ft at 15 seconds. A chance of showers after midnight.

SAT
SW wind around 5 kt. Seas around 4 ft. Wave Detail: NW 3 ft at 5 seconds, SW 2 ft at 9 seconds and W 2 ft at 12 seconds. A chance of showers.

SAT NIGHT
SW wind around 5 kt. Seas around 4 ft. Wave Detail: NW 2 ft at 5 seconds, SW 2 ft at 8 seconds and W 3 ft at 11 seconds. Showers likely, mainly in the evening.

SUN
S wind 5 to 10 kt. Seas around 4 ft. Wave Detail: SW 2 ft at 8 seconds, W 2 ft at 11 seconds and S 2 ft at 14 seconds. A chance of showers.

SUN NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 7 seconds, W 2 ft at 10 seconds and S 2 ft at 14 seconds. A chance of showers.

MON
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 7 seconds, W 2 ft at 10 seconds and S 2 ft at 13 seconds. Showers likely.

MON NIGHT
W wind around 5 kt, veering to NW after midnight. Seas 4 to 5 ft. Wave Detail: SW 3 ft at 6 seconds, S 2 ft at 13 seconds and W 2 ft at 14 seconds. Showers likely.

PZZ130-042245
West Entrance U.S. Waters Strait Of Juan De Fuca
234 AM PDT Thu Sep 4 2025

TODAY
W wind around 5 kt, rising to 5 to 10 kt late. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and W 2 ft at 12 seconds. Patchy dense fog this morning.

TONIGHT
W wind 5 to 10 kt, easing to around 5 kt after midnight. Seas around 3 ft. Wave Detail: W 2 ft at 6 seconds.

FRI
W wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft at 6 seconds.

FRI NIGHT
W wind around 5 kt. Seas around 3 ft in the evening, then around 2 ft or less. Wave Detail: W 2 ft at 6 seconds.

SAT
W wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft at 11 seconds.

SAT NIGHT
W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 2 ft at 12 seconds. A chance of showers.

SUN
SW wind around 5 kt. Seas around 3 ft in the morning, then around 2 ft or less. Wave Detail: W 2 ft at 11 seconds. A chance of showers.

SUN NIGHT
SW wind 5 to 10 kt. Seas around 2 ft or less. Wave Detail: W 2 ft at 10 seconds. A chance of showers.

MON
SW wind around 5 kt. Seas around 2 ft or less. A chance of showers.

MON NIGHT
W wind around 5 kt. Seas around 2 ft or less. A chance of showers in the evening, then showers likely after midnight.

PZZ131-042245
Central U.S. Waters Strait Of Juan De Fuca
234 AM PDT Thu Sep 4 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM PDT EARLY THIS MORNING

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

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

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

SAT NIGHT
W wind 10 to 15 kt. Waves around 2 ft or less, then around 3 ft after midnight. A chance of showers.

SUN
W wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers.

SUN NIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. A chance of showers.

MON
W wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers.

MON NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers in the evening, then showers likely after midnight.

PZZ132-042245
East Entrance U.S. Waters Strait Of Juan De Fuca
234 AM PDT Thu Sep 4 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM PDT EARLY THIS MORNING

TODAY
W wind around 5 kt. Waves around 2 ft or less. Patchy dense fog early this morning. Hazy.

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

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

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

SAT
SW wind around 5 kt. Waves around 2 ft or less. A chance of showers in the morning.

SAT NIGHT
W wind 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Waves around 2 ft or less. A chance of showers.

SUN
SW wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers.

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

MON
S wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers in the morning, then showers likely in the afternoon.

MON NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers in the evening, then showers likely after midnight.

PZZ134-042245
Admiralty Inlet
234 AM PDT Thu Sep 4 2025

TODAY
NW wind around 5 kt. Waves around 2 ft or less. Hazy until late afternoon.

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

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

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

SAT
S wind around 5 kt, veering to W around 5 kt in the afternoon. Waves around 2 ft or less. A chance of showers.

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

SUN
S wind around 5 kt, veering to W in the afternoon. Waves around 2 ft or less. A chance of showers.

SUN NIGHT
W wind around 5 kt. Waves around 2 ft or less. A chance of showers.

MON
S wind around 5 kt. Waves around 2 ft or less. A chance of showers in the morning, then showers likely in the afternoon.

MON NIGHT
W wind around 5 kt. Waves around 2 ft or less. Showers likely.

PZZ133-042245
Northern Inland Waters Including The San Juan Islands
234 AM PDT Thu Sep 4 2025

TODAY
S wind around 5 kt, veering to W late this morning and afternoon. Waves around 2 ft or less. Hazy.

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

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

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

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

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

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

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

MON
S wind around 5 kt. Waves around 2 ft or less. A chance of showers.

MON NIGHT
S wind around 5 kt. Waves around 2 ft or less. A chance of showers in the evening, then showers likely after midnight.

PZZ135-042245
Puget Sound and Hood Canal
234 AM PDT Thu Sep 4 2025

TODAY
N wind around 5 kt. Waves around 2 ft or less. Hazy this morning.

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

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

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

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

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

SUN
S wind around 5 kt. Waves around 2 ft or less. A chance of showers.

SUN NIGHT
W wind 5 to 10 kt, becoming SW after midnight. Waves around 2 ft or less. A chance of showers.

MON
S wind around 5 kt. Waves around 2 ft or less. A chance of showers.

MON NIGHT
SW wind around 5 kt. Waves around 2 ft or less. A chance of showers in the evening, then showers likely after midnight.

PZZ110-042245
Grays Harbor Bar
234 AM PDT Thu Sep 4 2025

DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM PDT THIS MORNING

Combined seas 4 to 5 ft. Bar conditions light. Maximum ebb currents will occur around 315 PM Thursday, 330 AM Friday, and 400 PM Friday.