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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 180850
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
150 AM PDT Sun Oct 18 2026

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

PZZ100-182200
150 AM PDT Sun Oct 18 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...High pressure will build across the waters into Sunday. A low pressure system passing southward well offshore will turn winds northerly or weakly offshore Sunday night into Monday. Weak high pressure will remain across the waters into the middle of the coming week for rather quiet conditions.

PZZ150-182200
Coastal Waters From Cape Flattery To James Island Out 10 Nm
150 AM PDT Sun Oct 18 2026

TODAY
NE wind around 5 kt, backing to N late. Seas 7 to 8 ft. Wave Detail: W 8 ft at 12 seconds, SW 2 ft at 18 seconds and W 2 ft at 19 seconds.

TONIGHT
N wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: W 8 ft at 12 seconds and SW 2 ft at 18 seconds.

MON
E wind around 5 kt, backing to N around 5 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: W 6 ft at 11 seconds, W 2 ft at 15 seconds and SW 2 ft at 17 seconds.

MON NIGHT
N wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 10 seconds, W 2 ft at 15 seconds and SW 2 ft at 16 seconds.

TUE
NE wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 10 seconds, W 2 ft at 14 seconds and SW 2 ft at 15 seconds.

TUE NIGHT
N wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 2 ft at 7 seconds and W 5 ft at 11 seconds.

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

WED NIGHT
NW wind around 5 kt. Seas 4 to 6 ft. Wave Detail: NW 3 ft at 5 seconds, W 5 ft at 11 seconds and W 6 ft at 17 seconds.

THU
NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 7 to 10 ft. Wave Detail: NW 3 ft at 6 seconds and W 10 ft at 15 seconds.

THU NIGHT
NW wind 10 to 15 kt. Seas 8 to 10 ft. Wave Detail: W 10 ft at 14 seconds.

PZZ153-182200
Coastal Waters From James Island To Point Grenville Out 10 Nm
150 AM PDT Sun Oct 18 2026

TODAY
N wind around 5 kt, backing to NW late. Seas 6 to 8 ft. Wave Detail: W 8 ft at 12 seconds, SW 2 ft at 18 seconds and W 2 ft at 19 seconds.

TONIGHT
N wind 5 to 10 kt, becoming NE after midnight. Seas 6 to 8 ft. Wave Detail: W 7 ft at 12 seconds and SW 2 ft at 17 seconds.

MON
SE wind around 5 kt, veering to SW around 5 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: W 6 ft at 11 seconds, W 2 ft at 16 seconds and SW 2 ft at 17 seconds.

MON NIGHT
N wind around 5 kt. Seas 5 to 6 ft. Wave Detail: N 2 ft at 5 seconds, W 6 ft at 10 seconds and W 5 ft at 15 seconds.

TUE
N wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 10 seconds and W 2 ft at 14 seconds.

TUE NIGHT
N wind 5 to 10 kt, becoming NE after midnight. Seas 4 to 6 ft. Wave Detail: NW 3 ft at 7 seconds and W 6 ft at 10 seconds.

WED
NE wind around 5 kt, backing to NW in the afternoon. Seas 3 to 5 ft. Wave Detail: NW 3 ft at 7 seconds and W 4 ft at 10 seconds.

WED NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft, building to 5 to 6 ft after midnight. Wave Detail: NW 5 ft at 6 seconds, W 4 ft at 12 seconds and W 6 ft at 18 seconds.

THU
NW wind 5 to 10 kt. Seas 7 to 10 ft. Wave Detail: NW 4 ft at 7 seconds and W 10 ft at 15 seconds.

THU NIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 8 to 11 ft. Wave Detail: W 10 ft at 14 seconds.

PZZ156-182200
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
150 AM PDT Sun Oct 18 2026

TODAY
N wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 7 ft at 12 seconds.

TONIGHT
N wind 5 to 10 kt, veering to NE after midnight. Seas 5 to 7 ft. Wave Detail: NW 2 ft at 4 seconds and W 7 ft at 12 seconds. Areas of fog after midnight.

MON
SE wind around 5 kt, veering to SW in the afternoon. Seas 5 to 6 ft. Wave Detail: W 6 ft at 11 seconds and W 2 ft at 15 seconds. Areas of fog in the morning.

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

TUE
NE wind around 5 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 9 seconds and W 2 ft at 14 seconds.

TUE NIGHT
N wind 5 to 10 kt, veering to NE after midnight. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 8 seconds.

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

WED NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: NW 6 ft at 6 seconds, W 3 ft at 12 seconds and W 7 ft at 18 seconds.

THU
NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 7 to 10 ft. Wave Detail: NW 6 ft at 7 seconds and W 10 ft at 16 seconds. A chance of showers in the morning.

THU NIGHT
NW wind 10 to 15 kt. Seas 8 to 11 ft. Wave Detail: W 11 ft at 14 seconds.

PZZ170-182200
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
150 AM PDT Sun Oct 18 2026

TODAY
NE wind 5 to 10 kt. Seas 8 to 9 ft. Wave Detail: W 9 ft at 12 seconds, S 2 ft at 16 seconds and W 2 ft at 19 seconds.

TONIGHT
N wind 5 to 10 kt. Seas 7 to 9 ft. Wave Detail: W 8 ft at 12 seconds, W 2 ft at 17 seconds and S 2 ft at 17 seconds.

MON
NE wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 11 seconds, W 2 ft at 15 seconds and S 2 ft at 17 seconds.

MON NIGHT
N wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 10 seconds, W 2 ft at 15 seconds and S 2 ft at 16 seconds.

TUE
N wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 7 ft at 10 seconds, W 2 ft at 14 seconds and S 2 ft at 15 seconds.

TUE NIGHT
N wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: N 4 ft at 8 seconds, NW 6 ft at 10 seconds and S 2 ft at 16 seconds.

WED
N wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 4 ft at 6 seconds, W 4 ft at 11 seconds and S 2 ft at 16 seconds.

WED NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft, building to 7 to 8 ft after midnight. Wave Detail: NW 3 ft at 5 seconds, W 2 ft at 10 seconds and S 2 ft at 15 seconds.

THU
NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 9 to 13 ft. Wave Detail: N 3 ft at 5 seconds, NW 13 ft at 15 seconds and S 2 ft at 15 seconds.

THU NIGHT
NW wind 15 to 20 kt. Seas 10 to 13 ft. Wave Detail: NW 2 ft at 5 seconds, NW 13 ft at 14 seconds and S 2 ft at 14 seconds.

PZZ173-182200
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
150 AM PDT Sun Oct 18 2026

TODAY
N wind 5 to 10 kt. Seas 8 to 9 ft. Wave Detail: W 9 ft at 12 seconds and S 2 ft at 16 seconds.

TONIGHT
N wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: N 2 ft at 4 seconds, W 8 ft at 12 seconds and W 2 ft at 17 seconds.

MON
NE wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 7 ft at 11 seconds, W 2 ft at 15 seconds and S 2 ft at 17 seconds.

MON NIGHT
N wind 5 to 10 kt, rising to 10 to 15 kt after midnight. Seas 6 to 8 ft. Wave Detail: N 3 ft at 4 seconds, W 7 ft at 11 seconds and W 2 ft at 15 seconds.

TUE
N wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: NW 7 ft at 9 seconds, W 2 ft at 14 seconds and S 2 ft at 15 seconds.

TUE NIGHT
N wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: NW 4 ft at 7 seconds, NW 6 ft at 10 seconds and S 2 ft at 16 seconds.

WED
N wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 4 ft at 8 seconds, W 5 ft at 11 seconds and S 2 ft at 15 seconds.

WED NIGHT
NW wind 5 to 10 kt. Seas 5 to 6 ft, building to 7 to 8 ft after midnight. Wave Detail: NW 4 ft at 5 seconds, W 3 ft at 12 seconds and S 2 ft at 15 seconds.

THU
NW wind 15 to 20 kt. Seas 10 to 13 ft. Wave Detail: NW 4 ft at 7 seconds, NW 13 ft at 15 seconds and S 2 ft at 15 seconds.

THU NIGHT
NW wind 15 to 20 kt. Seas 11 to 14 ft. Wave Detail: NW 2 ft at 6 seconds, NW 13 ft at 14 seconds and S 2 ft at 14 seconds.

PZZ176-182200
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
150 AM PDT Sun Oct 18 2026

TODAY
N wind 5 to 10 kt. Seas around 8 ft. Wave Detail: W 8 ft at 12 seconds and S 2 ft at 16 seconds.

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

MON
NE wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 6 ft at 11 seconds, W 5 ft at 15 seconds and S 2 ft at 17 seconds.

MON NIGHT
N wind 5 to 10 kt, rising to 10 to 15 kt after midnight. Seas 6 to 8 ft. Wave Detail: N 4 ft at 5 seconds, W 8 ft at 11 seconds and W 5 ft at 15 seconds.

TUE
N wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Seas 6 to 7 ft. Wave Detail: NE 2 ft at 5 seconds, NW 6 ft at 10 seconds and W 2 ft at 14 seconds.

TUE NIGHT
N wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: NW 6 ft at 9 seconds and S 2 ft at 16 seconds.

WED
N wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 8 seconds, W 5 ft at 11 seconds and S 2 ft at 15 seconds.

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

THU
NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 9 to 13 ft. Wave Detail: NW 6 ft at 7 seconds, NW 13 ft at 15 seconds and S 2 ft at 15 seconds. A chance of showers in the morning.

THU NIGHT
NW wind 15 to 20 kt. Seas 11 to 13 ft. Wave Detail: NW 2 ft at 5 seconds, NW 12 ft at 14 seconds and S 2 ft at 14 seconds.

PZZ130-182200
West Entrance U.S. Waters Strait Of Juan De Fuca
150 AM PDT Sun Oct 18 2026

TODAY
N wind around 5 kt, veering to E late this morning and afternoon. Seas 4 to 6 ft. Wave Detail: W 6 ft at 12 seconds.

TONIGHT
E wind around 5 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 12 seconds.

MON
E wind around 5 kt in the morning, becoming light and variable. Seas 3 to 5 ft. Wave Detail: W 5 ft at 11 seconds.

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

TUE
NE wind 5 to 10 kt, becoming E in the afternoon. Seas 3 to 5 ft. Wave Detail: W 4 ft at 10 seconds.

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

WED
E wind around 5 kt, backing to N around 5 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 10 seconds.

WED NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 11 seconds and W 4 ft at 17 seconds.

THU
W wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 15 seconds.

THU NIGHT
W wind around 10 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 13 seconds.

PZZ131-182200
Central U.S. Waters Strait Of Juan De Fuca
150 AM PDT Sun Oct 18 2026

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

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

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

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

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

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

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

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

THU
W wind 5 to 10 kt. Waves around 3 ft.

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

PZZ132-182200
East Entrance U.S. Waters Strait Of Juan De Fuca
150 AM PDT Sun Oct 18 2026

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

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

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

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

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

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

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

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

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

THU NIGHT
W wind 5 to 10 kt, rising to 10 to 15 kt after midnight. Waves around 3 ft.

PZZ134-182200
Admiralty Inlet
150 AM PDT Sun Oct 18 2026

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

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

MON
W 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 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less.

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

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

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

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

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

PZZ133-182200
Northern Inland Waters Including The San Juan Islands
150 AM PDT Sun Oct 18 2026

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

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

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

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

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

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

WED
Light and variable winds, becoming NW around 5 kt in the afternoon. Waves around 2 ft or less. Patchy fog in the morning.

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

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

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

PZZ135-182200
Puget Sound and Hood Canal
150 AM PDT Sun Oct 18 2026

TODAY
N wind around 5 kt, rising to 5 to 10 kt late this morning and afternoon. Waves around 2 ft or less.

TONIGHT
N wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less. Areas of fog after midnight.

MON
Light and variable winds, becoming N around 5 kt in the afternoon. Waves around 2 ft or less. Areas of fog in the morning.

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

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

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

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

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

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

THU NIGHT
W wind around 5 kt, backing to SW after midnight. Waves around 2 ft or less. A chance of showers in the evening.

PZZ110-182200
Grays Harbor Bar
150 AM PDT Sun Oct 18 2026

Combined seas 6 to 8 ft. Bar conditions moderate. Maximum ebb currents will occur around 1100 AM Sunday, 1100 PM Sunday, and 1215 PM Monday.