National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 182029
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
129 PM PDT Fri Sep 18 2026

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

PZZ100-190930
129 PM PDT Fri Sep 18 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...Onshore flow will persist into next week as a series of systems pass well north of the area. The onshore flow will increase somewhat early next week.


PZZ150-190930
Coastal Waters From Cape Flattery To James Island Out 10 Nm
129 PM PDT Fri Sep 18 2026

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

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

SAT NIGHT
NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds.

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

SUN NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 9 seconds and SW 2 ft at 18 seconds.

MON
W wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 13 seconds and W 6 ft at 18 seconds.

MON NIGHT
NW wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 13 seconds and SW 2 ft at 18 seconds.

TUE
NW wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: W 7 ft at 12 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
W wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 17 seconds.

WED
N wind around 5 kt, backing to NW in the afternoon. Seas 5 to 7 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 16 seconds.

WED NIGHT
N wind around 5 kt. Seas 6 to 7 ft. Wave Detail: W 6 ft at 10 seconds and SW 2 ft at 16 seconds.


PZZ153-190930
Coastal Waters From James Island To Point Grenville Out 10 Nm
129 PM PDT Fri Sep 18 2026

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

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

SAT NIGHT
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 6 seconds.

SUN
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 6 seconds.

SUN NIGHT
NW wind 10 to 15 kt, becoming N 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 7 seconds.

MON
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 13 seconds and W 6 ft at 16 seconds.

MON NIGHT
NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: W 8 ft at 13 seconds and SW 4 ft at 17 seconds.

TUE
NW wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: W 7 ft at 12 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 17 seconds.

WED
NE wind around 5 kt, backing to NW around 5 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 16 seconds.

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


PZZ156-190930
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
129 PM PDT Fri Sep 18 2026

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

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

SAT NIGHT
NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 6 seconds.

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

SUN NIGHT
NW wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 6 seconds.

MON
NW wind 10 to 15 kt. Seas 4 to 5 ft, building to 5 to 7 ft in the afternoon. Wave Detail: NW 6 ft at 8 seconds and W 6 ft at 16 seconds.

MON NIGHT
NW wind 15 to 20 kt. Seas 6 to 9 ft, building to 8 to 10 ft after midnight. Wave Detail: NW 9 ft at 12 seconds and SW 2 ft at 17 seconds.

TUE
NW wind 10 to 15 kt. Seas 6 to 9 ft. Wave Detail: W 8 ft at 12 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: NW 7 ft at 11 seconds and SW 2 ft at 17 seconds.

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

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


PZZ170-190930
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
129 PM PDT Fri Sep 18 2026

TONIGHT
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 9 seconds and S 2 ft at 16 seconds.

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

SAT NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and S 2 ft at 16 seconds.

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

SUN 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 16 seconds.

MON
NW wind 5 to 10 kt. Seas 4 to 5 ft, building to 5 to 8 ft in the afternoon. Wave Detail: NW 8 ft at 14 seconds and SW 6 ft at 18 seconds.

MON NIGHT
NW wind 10 to 15 kt. Seas 8 to 9 ft. Wave Detail: W 8 ft at 13 seconds and SW 2 ft at 18 seconds.

TUE
NW wind 5 to 10 kt. Seas 6 to 9 ft. Wave Detail: W 8 ft at 12 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
W wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 6 ft at 11 seconds and SW 2 ft at 17 seconds.

WED
NW wind around 5 kt. Seas 6 to 8 ft. Wave Detail: W 7 ft at 11 seconds and SW 2 ft at 16 seconds.

WED NIGHT
NW wind 5 to 10 kt, veering to N after midnight. Seas 7 to 8 ft. Wave Detail: W 7 ft at 10 seconds and SW 2 ft at 16 seconds. A chance of rain after midnight.


PZZ173-190930
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
129 PM PDT Fri Sep 18 2026

TONIGHT
W wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 9 seconds and S 2 ft at 17 seconds.

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

SAT NIGHT
NW wind around 10 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and S 2 ft at 16 seconds.

SUN
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 7 seconds and SW 2 ft at 16 seconds.

SUN NIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 7 seconds and SW 2 ft at 16 seconds.

MON
NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 5 ft, building to 5 to 8 ft in the afternoon. Wave Detail: NW 8 ft at 13 seconds and SW 6 ft at 18 seconds.

MON NIGHT
NW wind 10 to 15 kt. Seas 7 to 10 ft. Wave Detail: NW 9 ft at 12 seconds and SW 2 ft at 18 seconds.

TUE
NW wind 5 to 10 kt. Seas 7 to 9 ft. Wave Detail: NW 9 ft at 11 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
NW wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: NW 7 ft at 10 seconds and SW 2 ft at 17 seconds.

WED
N wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: W 7 ft at 11 seconds and SW 2 ft at 16 seconds.

WED NIGHT
N wind around 10 kt. Seas 7 to 8 ft. Wave Detail: NW 7 ft at 10 seconds and SW 2 ft at 16 seconds.


PZZ176-190930
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
129 PM PDT Fri Sep 18 2026

TONIGHT
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 9 seconds and S 2 ft at 17 seconds.

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

SAT NIGHT
N wind around 10 kt. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and S 2 ft at 16 seconds.

SUN
N wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and SW 2 ft at 16 seconds.

SUN NIGHT
NW wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: N 5 ft at 7 seconds and SW 2 ft at 16 seconds.

MON
NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: NW 8 ft at 14 seconds and W 4 ft at 17 seconds.

MON NIGHT
NW wind around 15 kt. Seas 8 to 9 ft. Wave Detail: NW 9 ft at 13 seconds and SW 2 ft at 18 seconds.

TUE
NW wind 10 to 15 kt. Seas 8 to 10 ft, subsiding to 7 to 8 ft in the afternoon. Wave Detail: NW 9 ft at 12 seconds and SW 2 ft at 17 seconds.

TUE NIGHT
NW wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 7 ft at 11 seconds and SW 2 ft at 17 seconds.

WED
N wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: W 7 ft at 11 seconds and SW 2 ft at 16 seconds.

WED NIGHT
N wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: W 7 ft at 11 seconds and SW 2 ft at 16 seconds.


PZZ130-190930
West Entrance U.S. Waters Strait Of Juan De Fuca
129 PM PDT Fri Sep 18 2026

TONIGHT
NW wind 5 to 10 kt, easing to around 5 kt late this evening and overnight. Seas around 3 ft. Wave Detail: NW 3 ft at 9 seconds.

SAT
NW wind around 5 kt, rising to 5 to 10 kt in the afternoon. Seas around 2 ft or less. Wave Detail: W 2 ft at 8 seconds.

SAT NIGHT
W wind 5 to 10 kt. Seas around 2 ft or less. Wave Detail: NW 2 ft at 6 seconds.

SUN
W wind 5 to 10 kt. Seas around 2 ft or less, then around 3 ft in the afternoon. Wave Detail: W 3 ft at 10 seconds.

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

MON
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 11 seconds and W 4 ft at 14 seconds.

MON NIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 12 seconds.

TUE
W wind around 5 kt, rising to 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 12 seconds.

TUE NIGHT
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 11 seconds.

WED
S wind around 5 kt, veering to W in the afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 10 seconds.

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


PZZ131-190930
Central U.S. Waters Strait Of Juan De Fuca
129 PM PDT Fri Sep 18 2026

TONIGHT
W wind 5 to 10 kt, rising to 10 to 15 kt late this evening, easing to 5 to 10 kt after midnight. Waves around 2 ft or less.

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

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

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

SUN NIGHT
W wind 10 to 15 kt. Waves around 2 ft or less, then around 3 ft after midnight.

MON
W wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Waves around 3 ft.

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

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

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

WED
SW wind 5 to 10 kt, veering to NW in the afternoon. Waves around 3 ft.

WED NIGHT
W wind 5 to 10 kt, backing to SW after midnight. Waves around 3 ft.


PZZ132-190930
East Entrance U.S. Waters Strait Of Juan De Fuca
129 PM PDT Fri Sep 18 2026

TONIGHT
W wind around 5 kt, backing to SW late this evening and overnight. Waves around 2 ft or less.

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

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

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.

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

MON NIGHT
W wind 10 to 15 kt. Waves around 3 ft.

TUE
W wind 5 to 10 kt. Waves around 3 ft in the morning, then around 2 ft or less.

TUE NIGHT
W wind 10 to 15 kt. Waves around 3 ft.

WED
SW wind 5 to 10 kt. Waves around 2 ft or less.

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


PZZ134-190930
Admiralty Inlet
129 PM PDT Fri Sep 18 2026

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

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

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

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

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

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

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

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

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


PZZ133-190930
Northern Inland Waters Including The San Juan Islands
129 PM PDT Fri Sep 18 2026

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

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

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

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

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

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

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

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

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


PZZ135-190930
Puget Sound and Hood Canal
129 PM PDT Fri Sep 18 2026

TONIGHT
SW wind around 5 kt until early morning, becoming light and variable. Waves around 2 ft or less.

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

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

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

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

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

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

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

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

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

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


PZZ110-190930
Grays Harbor Bar
129 PM PDT Fri Sep 18 2026

Combined seas 4 or 5 ft. Bar conditions light. Maximum ebb currents will occur around 1045 PM Friday, 1130 AM Saturday, and 1200 AM Sunday.