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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 300934
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
234 AM PDT Wed Sep 30 2026

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

PZZ100-302245
234 AM PDT Wed Sep 30 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...High pressure continues to build over the coastal waters. Offshore flow will develop late Wednesday and will persist at times throughout the week, increasing by the weekend as a thermal trough builds along the coast.

PZZ150-302245
Coastal Waters From Cape Flattery To James Island Out 10 Nm
234 AM PDT Wed Sep 30 2026

TODAY
N wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft at 11 seconds and SW 2 ft at 16 seconds.

TONIGHT
NE wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 11 seconds and SW 2 ft at 16 seconds.

THU
E wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 15 seconds.

THU NIGHT
E wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 15 seconds. A chance of rain.

FRI
NE wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 9 seconds and SW 2 ft at 14 seconds.

FRI NIGHT
N wind around 5 kt. Seas 3 to 4 ft. Wave Detail: N 2 ft at 4 seconds, W 3 ft at 9 seconds and SW 2 ft at 14 seconds.

SAT
NE wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 4 seconds, W 3 ft at 8 seconds and SW 2 ft at 16 seconds.

SAT NIGHT
N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 3 ft at 4 seconds, W 3 ft at 7 seconds and SW 2 ft at 15 seconds.

SUN
N wind around 5 kt. Seas 3 to 4 ft. Wave Detail: N 2 ft at 4 seconds, W 3 ft at 7 seconds and W 2 ft at 14 seconds.

SUN NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 5 seconds, W 3 ft at 12 seconds and SW 2 ft at 15 seconds.

PZZ153-302245
Coastal Waters From James Island To Point Grenville Out 10 Nm
234 AM PDT Wed Sep 30 2026

TODAY
N wind around 5 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 11 seconds.

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

THU
SE wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 15 seconds.

THU NIGHT
SE wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 15 seconds.

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

FRI NIGHT
N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: N 2 ft at 4 seconds and W 4 ft at 9 seconds.

SAT
N wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 5 seconds and W 3 ft at 8 seconds.

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

SUN
NE wind around 5 kt, backing to NW in the afternoon. Seas around 3 ft. Wave Detail: NW 3 ft at 6 seconds.

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

PZZ156-302245
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
234 AM PDT Wed Sep 30 2026

TODAY
N wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 11 seconds.

TONIGHT
N wind 5 to 10 kt, veering to E after midnight. Seas 4 to 6 ft. Wave Detail: N 3 ft at 4 seconds and W 5 ft at 11 seconds.

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

THU NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 10 seconds.

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

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

SAT
NE wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 8 seconds.

SAT NIGHT
N wind 10 to 15 kt, becoming NE 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: NW 3 ft at 5 seconds and NW 4 ft at 8 seconds.

SUN
NE wind 5 to 10 kt, backing to N in the afternoon. Seas around 3 ft. Wave Detail: NW 3 ft at 8 seconds.

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

PZZ170-302245
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
234 AM PDT Wed Sep 30 2026

TODAY
N wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: N 2 ft at 4 seconds, W 6 ft at 11 seconds and SW 2 ft at 15 seconds.

TONIGHT
N wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft at 11 seconds and SW 2 ft at 16 seconds.

THU
E wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE 2 ft at 3 seconds, W 5 ft at 10 seconds and SW 2 ft at 15 seconds.

THU NIGHT
E wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: S 2 ft at 6 seconds, W 4 ft at 10 seconds and SW 2 ft at 15 seconds.

FRI
N wind around 5 kt. Seas around 4 ft. Wave Detail: NE 2 ft at 3 seconds, W 4 ft at 9 seconds and SW 2 ft at 14 seconds.

FRI NIGHT
N wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: N 3 ft at 4 seconds, NW 3 ft at 9 seconds and SW 2 ft at 14 seconds.

SAT
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 3 ft at 4 seconds, NW 3 ft at 8 seconds and SW 2 ft at 16 seconds.

SAT NIGHT
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 4 seconds, NW 2 ft at 8 seconds and SW 2 ft at 15 seconds.

SUN
N wind 5 to 10 kt. Seas around 4 ft. Wave Detail: N 3 ft at 5 seconds, W 3 ft at 8 seconds and W 2 ft at 13 seconds.

SUN NIGHT
NW wind around 10 kt. Seas 4 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: NW 5 ft at 6 seconds, W 4 ft at 12 seconds and SW 2 ft at 15 seconds.

PZZ173-302245
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
234 AM PDT Wed Sep 30 2026

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

TONIGHT
N wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 16 seconds.

THU
SE wind 5 to 10 kt. Seas around 5 ft. Wave Detail: SE 2 ft at 4 seconds, SW 2 ft at 8 seconds and W 5 ft at 10 seconds.

THU NIGHT
SE wind 5 to 10 kt, veering to SW after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 15 seconds.

FRI
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NE 3 ft at 4 seconds, NW 4 ft at 8 seconds and SW 2 ft at 14 seconds.

FRI NIGHT
N wind around 10 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 4 seconds, NW 4 ft at 9 seconds and SW 2 ft at 14 seconds.

SAT
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 5 seconds, NW 3 ft at 8 seconds and SW 2 ft at 16 seconds.

SAT NIGHT
N wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 5 seconds, NW 3 ft at 8 seconds and SW 2 ft at 15 seconds.

SUN
N wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds, W 3 ft at 8 seconds and W 2 ft at 13 seconds.

SUN NIGHT
NW wind around 10 kt. Seas 5 to 7 ft. Wave Detail: NW 5 ft at 6 seconds, W 4 ft at 12 seconds and SW 2 ft at 15 seconds.

PZZ176-302245
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
234 AM PDT Wed Sep 30 2026

TODAY
N wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: N 3 ft at 5 seconds, W 6 ft at 11 seconds and SW 2 ft at 16 seconds.

TONIGHT
N wind 5 to 10 kt, veering to NE after midnight. Seas 5 to 6 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 16 seconds.

THU
SE wind 5 to 10 kt. Seas around 5 ft. Wave Detail: SW 2 ft at 8 seconds, W 5 ft at 10 seconds and SW 2 ft at 15 seconds.

THU NIGHT
SW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 15 seconds.

FRI
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 3 ft at 4 seconds, W 4 ft at 9 seconds and SW 2 ft at 15 seconds.

FRI NIGHT
N wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 5 seconds, W 4 ft at 9 seconds and SW 2 ft at 15 seconds.

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

SAT NIGHT
N wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft at 5 seconds, NW 3 ft at 8 seconds and SW 2 ft at 15 seconds.

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

SUN NIGHT
NW wind 10 to 15 kt. Seas 4 to 6 ft, building to 6 to 7 ft after midnight. Wave Detail: NW 6 ft at 7 seconds, W 4 ft at 12 seconds and SW 2 ft at 15 seconds.

PZZ130-302245
West Entrance U.S. Waters Strait Of Juan De Fuca
234 AM PDT Wed Sep 30 2026

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

TONIGHT
E wind around 5 kt, rising to 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 11 seconds.

THU
E wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 2 ft at 3 seconds and W 4 ft at 10 seconds.

THU NIGHT
E wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 10 seconds. A chance of rain.

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

FRI NIGHT
NE wind around 5 kt. Seas around 3 ft in the evening, then around 2 ft or less. Wave Detail: W 2 ft at 9 seconds.

SAT
E wind 5 to 10 kt, easing to around 5 kt in the afternoon. Seas around 3 ft. Wave Detail: W 2 ft at 8 seconds.

SAT NIGHT
NE wind around 5 kt, rising to 5 to 10 kt after midnight. Seas around 2 ft or less. Wave Detail: W 2 ft at 8 seconds.

SUN
E wind 5 to 10 kt, easing to around 5 kt in the afternoon. Seas around 3 ft. Wave Detail: W 2 ft at 6 seconds.

SUN NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and W 3 ft at 12 seconds.

PZZ131-302245
Central U.S. Waters Strait Of Juan De Fuca
234 AM PDT Wed Sep 30 2026

TODAY
W wind 5 to 10 kt, becoming NE late this morning, veering to E this afternoon. Waves around 2 ft or less.

TONIGHT
E wind around 5 kt, veering to SE after midnight. Waves around 2 ft or less.

THU
E wind 5 to 10 kt. Waves around 2 ft or less.

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

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

FRI NIGHT
N wind around 5 kt, veering to E after midnight. Waves around 2 ft or less.

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

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

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

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

PZZ132-302245
East Entrance U.S. Waters Strait Of Juan De Fuca
234 AM PDT Wed Sep 30 2026

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

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

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

THU NIGHT
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. Waves around 2 ft or less.

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

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

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

SUN NIGHT
W wind around 5 kt in the evening, becoming light and variable. Waves around 2 ft or less.

PZZ134-302245
Admiralty Inlet
234 AM PDT Wed Sep 30 2026

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

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

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

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

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

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

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

SUN NIGHT
NW wind around 5 kt in the evening, becoming light and variable. Waves around 2 ft or less.

PZZ133-302245
Northern Inland Waters Including The San Juan Islands
234 AM PDT Wed Sep 30 2026

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

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

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

THU NIGHT
N wind around 5 kt in the evening, becoming light and variable. Waves around 2 ft or less. A chance of rain after midnight.

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

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

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

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

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

SUN NIGHT
NW wind around 5 kt in the evening, becoming light and variable. Waves around 2 ft or less.

PZZ135-302245
Puget Sound and Hood Canal
234 AM PDT Wed Sep 30 2026

TODAY
N wind around 5 kt, rising to 5 to 10 kt this afternoon. Waves around 2 ft or less. Patchy fog early this morning.

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

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

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

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

FRI NIGHT
N wind 5 to 10 kt. Waves around 2 ft or less.

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

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

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

SUN NIGHT
N wind around 5 kt in the evening, becoming light and variable. Waves around 2 ft or less.

PZZ110-302245
Grays Harbor Bar
234 AM PDT Wed Sep 30 2026

Combined seas 6 to 8 ft, subsiding to 4 to 6 ft Wednesday. Bar conditions moderate, becoming light. Maximum ebb currents will occur around 715 AM Wednesday, 745 PM Wednesday, and 815 AM Thursday. The Wednesday evening ebb will be strong.