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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 100838
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
138 AM PDT Thu Sep 10 2026

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

PZZ100-102145
138 AM PDT Thu Sep 10 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...A low pressure and frontal system moves over the waters today through and Friday. Another low pressure system will move over the waters this weekend, with high pressure rebuilding early next week.

PZZ150-102145
Coastal Waters From Cape Flattery To James Island Out 10 Nm
138 AM PDT Thu Sep 10 2026

TODAY
NW wind 10 to 15 kt, easing to 5 to 10 kt late this morning, rising to 10 to 15 kt this afternoon. Seas 6 to 8 ft. Wave Detail: W 7 ft at 10 seconds and SW 2 ft at 18 seconds.

TONIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: W 7 ft at 9 seconds and SW 2 ft at 18 seconds.

FRI
W wind 5 to 10 kt, becoming S in the afternoon. Seas 5 to 7 ft. Wave Detail: W 6 ft at 9 seconds, W 2 ft at 12 seconds and SW 2 ft at 17 seconds.

FRI NIGHT
NW wind around 5 kt, veering to N after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 17 seconds.

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

SAT NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 15 seconds.

SUN
SW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 14 seconds.

SUN NIGHT
SW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds and SW 2 ft at 14 seconds.

MON
E wind around 5 kt, backing to NW in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SW 2 ft at 14 seconds.

MON NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SW 2 ft at 14 seconds.

PZZ153-102145
Coastal Waters From James Island To Point Grenville Out 10 Nm
138 AM PDT Thu Sep 10 2026

TODAY
NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: NW 7 ft at 9 seconds and W 2 ft at 12 seconds.

TONIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: W 8 ft at 9 seconds and SW 2 ft at 18 seconds.

FRI
NW wind around 5 kt, backing to SW in the afternoon. Seas 5 to 7 ft. Wave Detail: W 7 ft at 9 seconds, W 2 ft at 12 seconds and SW 2 ft at 17 seconds.

FRI NIGHT
NW wind around 5 kt, veering to N after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and SW 2 ft at 17 seconds.

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

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

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

SUN NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds and SW 2 ft at 14 seconds.

MON
E wind around 5 kt, backing to NW in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SW 2 ft at 14 seconds.

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

PZZ156-102145
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
138 AM PDT Thu Sep 10 2026

TODAY
NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 8 seconds, W 2 ft at 11 seconds and SW 2 ft at 18 seconds.

TONIGHT
NW wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Seas 7 to 9 ft, subsiding to 5 to 8 ft after midnight. Wave Detail: NW 9 ft at 9 seconds and SW 2 ft at 18 seconds.

FRI
NW wind 5 to 10 kt, backing to SW in the afternoon. Seas 5 to 7 ft. Wave Detail: NW 7 ft at 9 seconds and SW 2 ft at 17 seconds.

FRI NIGHT
W wind around 5 kt, veering to NE around 5 kt after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 11 seconds and SW 2 ft at 17 seconds. Rain likely after midnight.

SAT
NE wind around 5 kt, backing to NW in the afternoon. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 10 seconds and SW 2 ft at 15 seconds. A chance of rain.

SAT NIGHT
W 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.

SUN
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 9 seconds and SW 2 ft at 14 seconds.

SUN NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds and SW 2 ft at 14 seconds.

MON
NE wind around 5 kt, backing to N in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds and SW 2 ft at 14 seconds.

MON NIGHT
NW wind 10 to 15 kt, becoming N 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 7 seconds.

PZZ170-102145
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
138 AM PDT Thu Sep 10 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM PDT EARLY THIS MORNING THROUGH LATE TONIGHT

TODAY
NW wind 15 to 20 kt, rising to 20 to 25 kt this afternoon. Seas 8 to 10 ft. Wave Detail: NW 10 ft at 9 seconds, S 2 ft at 13 seconds and W 4 ft at 14 seconds.

TONIGHT
NW wind 15 to 20 kt. Seas 7 to 10 ft. Wave Detail: NW 10 ft at 9 seconds and SW 2 ft at 18 seconds.

FRI
NW wind 5 to 10 kt, backing to SW in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 6 ft in the afternoon. Wave Detail: NW 7 ft at 9 seconds and SW 2 ft at 17 seconds.

FRI NIGHT
NE wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft at 10 seconds, S 2 ft at 11 seconds and SW 2 ft at 17 seconds.

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

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

SUN
W wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 8 seconds and SW 2 ft at 14 seconds.

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

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

MON NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and SW 2 ft at 14 seconds.

PZZ173-102145
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
138 AM PDT Thu Sep 10 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM PDT EARLY THIS MORNING THROUGH LATE TONIGHT

TODAY
NW wind 15 to 20 kt. Seas 8 to 11 ft. Wave Detail: NW 11 ft at 9 seconds, S 2 ft at 13 seconds and W 3 ft at 14 seconds.

TONIGHT
NW wind 15 to 20 kt. Seas 8 to 11 ft. Wave Detail: NW 11 ft at 8 seconds, S 2 ft at 11 seconds and SW 2 ft at 18 seconds.

FRI
NW wind 10 to 15 kt, becoming SW around 5 kt in the afternoon. Seas 7 to 8 ft, subsiding to 5 to 6 ft in the afternoon. Wave Detail: NW 8 ft at 9 seconds and SW 2 ft at 17 seconds.

FRI NIGHT
NE wind around 5 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 10 seconds, S 2 ft at 12 seconds and SW 2 ft at 17 seconds.

SAT
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 10 seconds, S 2 ft at 10 seconds and SW 2 ft at 15 seconds. A chance of rain in the morning.

SAT NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 9 seconds and SW 2 ft at 15 seconds.

SUN
W wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 9 seconds and SW 2 ft at 14 seconds.

SUN NIGHT
W 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.

MON
N wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 7 seconds and SW 2 ft at 14 seconds.

MON NIGHT
N wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 7 seconds and SW 2 ft at 14 seconds.

PZZ176-102145
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
138 AM PDT Thu Sep 10 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM PDT EARLY THIS MORNING THROUGH LATE TONIGHT

TODAY
NW wind 15 to 20 kt. Seas 8 to 10 ft. Wave Detail: NW 9 ft at 10 seconds and SW 2 ft at 18 seconds.

TONIGHT
NW wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Seas 9 to 10 ft, subsiding to 7 to 9 ft after midnight. Wave Detail: NW 9 ft at 9 seconds and SW 2 ft at 17 seconds.

FRI
NW wind 5 to 10 kt, backing to W in the afternoon. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 9 seconds, NW 2 ft at 12 seconds and SW 2 ft at 17 seconds.

FRI NIGHT
W wind around 5 kt, veering to NE around 5 kt after midnight. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 10 seconds and SW 2 ft at 16 seconds. A chance of rain in the evening, then rain likely after midnight.

SAT
NE wind 5 to 10 kt. Seas around 5 ft. Wave Detail: NW 4 ft at 10 seconds and SW 2 ft at 15 seconds. Rain likely, mainly in the morning.

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

SUN
W wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 9 seconds and SW 2 ft at 14 seconds.

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

MON
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and SW 2 ft at 14 seconds.

MON NIGHT
N wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and SW 2 ft at 14 seconds.

PZZ130-102145
West Entrance U.S. Waters Strait Of Juan De Fuca
138 AM PDT Thu Sep 10 2026

TODAY
W wind 10 to 15 kt, easing to around 5 kt late this morning, rising to 5 to 10 kt this afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 10 seconds.

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

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

FRI NIGHT
NW wind around 5 kt, veering to NE after midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 10 seconds.

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

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

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

SUN NIGHT
W wind 5 to 10 kt, becoming SW after midnight. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds.

MON
E wind around 5 kt, backing to NE in the afternoon. Seas around 3 ft. Wave Detail: W 2 ft at 7 seconds.

MON NIGHT
NW wind around 5 kt. Seas around 3 ft. Wave Detail: W 2 ft at 7 seconds.

PZZ131-102145
Central U.S. Waters Strait Of Juan De Fuca
138 AM PDT Thu Sep 10 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM PDT THIS MORNING

TODAY
W wind 15 to 20 kt, easing to 10 to 15 kt late this morning, easing to 5 to 10 kt early this afternoon, rising to 10 to 15 kt late. Waves 3 to 5 ft.

TONIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 3 ft.

FRI
SE wind around 5 kt, backing to E in the afternoon. Waves around 2 ft or less.

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

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

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

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

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

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

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

PZZ132-102145
East Entrance U.S. Waters Strait Of Juan De Fuca
138 AM PDT Thu Sep 10 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM PDT THIS MORNING

TODAY
W wind 15 to 20 kt, easing to around 5 kt. Waves 3 to 5 ft this morning, then around 2 ft or less.

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

FRI
SE wind 5 to 10 kt, backing to E in the afternoon. Waves around 2 ft or less.

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

SAT
W wind 5 to 10 kt. Waves around 2 ft or less. A chance of rain in the afternoon.

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

SUN
S wind 10 to 15 kt, becoming SE 5 to 10 kt in the afternoon. Waves around 2 ft or less.

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

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

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

PZZ134-102145
Admiralty Inlet
138 AM PDT Thu Sep 10 2026

TODAY
NW wind 10 to 15 kt, easing to 5 to 10 kt late this morning and afternoon. Waves around 2 ft or less.

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

FRI
SE wind 5 to 10 kt. 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. Waves around 2 ft or less. A chance of rain in the afternoon.

SAT NIGHT
W wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. A chance of rain.

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

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

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

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

PZZ133-102145
Northern Inland Waters Including The San Juan Islands
138 AM PDT Thu Sep 10 2026

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

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

FRI
SE wind 5 to 10 kt, becoming S in the afternoon. Waves around 2 ft or less.

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

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

SAT NIGHT
SW wind 5 to 10 kt, backing to S after midnight. Waves around 2 ft or less.

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

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

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

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

PZZ135-102145
Puget Sound and Hood Canal
138 AM PDT Thu Sep 10 2026

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

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

FRI
S 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. Waves around 2 ft or less. A chance of rain.

SAT NIGHT
W wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. A chance of rain.

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

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

MON
S wind around 5 kt, backing to N around 5 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.

PZZ110-102145
Grays Harbor Bar
138 AM PDT Thu Sep 10 2026

Combined seas 4 to 6 ft, increasing to 6 to 8 ft Thursday. Bar conditions light becoming moderate. Maximum ebb currents will occur around 430 AM Thursday, 500 PM Thursday, and 515 AM Friday. The Thursday and Friday morning ebbs will be strong.