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National Weather Service Marine Forecast FZUS56 KSEW

FZUS56 KSEW 200932
CWFSEW

Coastal Waters Forecast for Washington
National Weather Service Seattle WA
232 AM PDT Thu Aug 20 2026

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

PZZ100-202245
232 AM PDT Thu Aug 20 2026

.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...Broad high pressure over the waters will weaken Friday. A weak surface low will move into the coastal waters Saturday with the associated front moving through the inland waters Saturday morning. The low will dissipate Saturday night. High pressure will rebuild Sunday and remain over the area through Monday.

PZZ150-202245
Coastal Waters From Cape Flattery To James Island Out 10 Nm
232 AM PDT Thu Aug 20 2026

TODAY
S wind around 5 kt, veering to W around 5 kt late. Seas 4 to 5 ft. Wave Detail: W 5 ft at 11 seconds and SW 2 ft at 15 seconds.

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

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

FRI NIGHT
S wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

SAT
S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas around 4 ft. Wave Detail: S 2 ft at 3 seconds and W 4 ft at 8 seconds. A chance of tstms in the morning, then a chance of showers in the afternoon.

SAT NIGHT
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 5 seconds and W 4 ft at 8 seconds. A chance of showers after midnight.

SUN
SW wind around 5 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds.

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

MON
N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 6 seconds.

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

Winds and seas higher in and near tstms.

PZZ153-202245
Coastal Waters From James Island To Point Grenville Out 10 Nm
232 AM PDT Thu Aug 20 2026

TODAY
SE wind around 5 kt, veering to SW this afternoon. Seas 4 to 5 ft. Wave Detail: W 3 ft at 8 seconds and W 5 ft at 11 seconds.

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

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

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

SAT
S wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 3 seconds and W 4 ft at 9 seconds. Scattered showers with a chance of tstms in the morning, then a chance of showers in the afternoon.

SAT NIGHT
S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 2 ft at 6 seconds and W 4 ft at 8 seconds. A chance of showers after midnight.

SUN
SW wind around 5 kt, veering to W in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

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

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

MON NIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: N 4 ft at 5 seconds.

Winds and seas higher in and near tstms.

PZZ156-202245
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
232 AM PDT Thu Aug 20 2026

TODAY
N wind around 5 kt, backing to SW late this morning and early afternoon, veering to W late. Seas 3 to 5 ft. Wave Detail: NW 3 ft at 7 seconds and W 5 ft at 11 seconds.

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

FRI
S wind around 5 kt, veering to SW in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.

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

SAT
S wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 4 ft at 5 seconds and W 4 ft at 8 seconds. Scattered showers with a chance of tstms in the morning, then a chance of showers in the afternoon.

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

SUN
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.

SUN NIGHT
NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 7 seconds.

MON
N wind 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NE 2 ft at 3 seconds and NW 4 ft at 6 seconds.

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

Winds and seas higher in and near tstms.

PZZ170-202245
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
232 AM PDT Thu Aug 20 2026

TODAY
E wind around 5 kt, veering to SE early this afternoon, veering to W around 5 kt late. Seas 5 to 6 ft. Wave Detail: W 5 ft at 8 seconds, W 6 ft at 11 seconds and SW 2 ft at 15 seconds.

TONIGHT
NW wind 5 to 10 kt. Seas around 5 ft. Wave Detail: W 5 ft at 9 seconds and S 2 ft at 15 seconds.

FRI
S wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds and S 2 ft at 15 seconds.

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

SAT
S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE 2 ft at 4 seconds, W 4 ft at 8 seconds and S 2 ft at 14 seconds. A chance of showers in the afternoon.

SAT NIGHT
SW wind 5 to 10 kt, veering to W after midnight. Seas 4 to 5 ft. Wave Detail: SE 2 ft at 5 seconds, W 4 ft at 8 seconds and S 2 ft at 14 seconds.

SUN
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 7 seconds and S 2 ft at 14 seconds.

SUN NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NE 2 ft at 3 seconds, NW 4 ft at 7 seconds and S 2 ft at 15 seconds.

MON
N wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: N 3 ft at 5 seconds and S 2 ft at 16 seconds.

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

PZZ173-202245
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
232 AM PDT Thu Aug 20 2026

TODAY
N wind 5 to 10 kt, becoming W late this morning and early afternoon, veering to NW late. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 8 seconds, W 6 ft at 11 seconds and SW 2 ft at 15 seconds.

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

FRI
SW wind around 5 kt. Seas 5 to 6 ft. Wave Detail: NW 4 ft at 9 seconds and S 2 ft at 15 seconds.

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

SAT
S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE 2 ft at 5 seconds, W 5 ft at 9 seconds and S 2 ft at 14 seconds. Scattered showers with a chance of tstms in the morning.

SAT NIGHT
SW wind 5 to 10 kt, veering to W after midnight. Seas 4 to 5 ft. Wave Detail: SE 2 ft at 6 seconds, W 5 ft at 8 seconds and S 2 ft at 14 seconds.

SUN
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and S 2 ft at 14 seconds.

SUN NIGHT
NW wind around 10 kt. Seas 4 to 5 ft. Wave Detail: NE 2 ft at 4 seconds, NW 4 ft at 7 seconds and S 2 ft at 14 seconds.

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

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

Winds and seas higher in and near tstms.

PZZ176-202245
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm
232 AM PDT Thu Aug 20 2026

TODAY
NW wind 5 to 10 kt, becoming W late this morning and early afternoon, rising to 5 to 10 kt late. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 8 seconds, NW 6 ft at 11 seconds and SW 2 ft at 15 seconds.

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

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

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

SAT
S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: SE 3 ft at 5 seconds, NW 5 ft at 8 seconds and SW 2 ft at 14 seconds. Scattered showers with a chance of tstms in the morning.

SAT NIGHT
SW wind 5 to 10 kt, veering to W after midnight. Seas 4 to 5 ft. Wave Detail: SE 3 ft at 5 seconds, NW 5 ft at 8 seconds and SW 2 ft at 14 seconds.

SUN
NW wind around 10 kt. Seas 4 to 5 ft. Wave Detail: NE 2 ft at 3 seconds, NW 5 ft at 7 seconds and SW 2 ft at 14 seconds.

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

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

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

Winds and seas higher in and near tstms.

PZZ130-202245
West Entrance U.S. Waters Strait Of Juan De Fuca
232 AM PDT Thu Aug 20 2026

TODAY
SW wind around 5 kt, veering to N late this morning, backing to NW this afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 11 seconds.

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

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

FRI NIGHT
W wind 10 to 15 kt. Seas around 3 ft. Wave Detail: W 3 ft at 9 seconds.

SAT
W wind 5 to 10 kt, becoming SW 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds. Scattered showers.

SAT NIGHT
W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds. A chance of showers.

SUN
W wind around 5 kt. Seas around 3 ft in the morning, then around 2 ft or less. Wave Detail: W 3 ft at 8 seconds.

SUN NIGHT
W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 7 seconds.

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

MON NIGHT
W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 6 seconds.

PZZ131-202245
Central U.S. Waters Strait Of Juan De Fuca
232 AM PDT Thu Aug 20 2026

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

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

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

FRI NIGHT
W wind 10 to 15 kt, rising to 15 to 20 kt after midnight. Waves around 2 ft or less, then 3 to 4 ft after midnight.

SAT
W wind 15 to 20 kt. Waves 3 to 4 ft. Scattered showers in the morning, then showers likely in the afternoon.

SAT NIGHT
W wind 10 to 20 kt. Waves around 3 ft. A chance of showers.

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

MON NIGHT
W wind 5 to 10 kt, rising to 10 to 15 kt after midnight. Waves around 2 ft or less.

PZZ132-202245
East Entrance U.S. Waters Strait Of Juan De Fuca
232 AM PDT Thu Aug 20 2026

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

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

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

FRI NIGHT
W wind 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Waves around 2 ft or less.

SAT
SW wind 10 to 20 kt. Waves around 3 ft. Showers likely. A chance of tstms in the afternoon.

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

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

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

Winds and waves higher in and near tstms.

PZZ134-202245
Admiralty Inlet
232 AM PDT Thu Aug 20 2026

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

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

FRI
NW wind around 5 kt, rising to around 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
S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. Showers likely. A chance of tstms in the afternoon.

SAT NIGHT
NW wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. A chance of showers in the evening.

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

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

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

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

Winds and waves higher in and near tstms.

PZZ133-202245
Northern Inland Waters Including The San Juan Islands
232 AM PDT Thu Aug 20 2026

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

TONIGHT
W wind 5 to 10 kt, veering to N after midnight. Waves around 2 ft or less.

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

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

SAT
S wind 10 to 15 kt. Waves around 2 ft or less. Showers likely. A chance of tstms in the afternoon.

SAT NIGHT
S wind 5 to 10 kt. Waves around 2 ft or less. Showers likely, mainly in the evening.

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

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

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

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

Winds and waves higher in and near tstms.

PZZ135-202245
Puget Sound and Hood Canal
232 AM PDT Thu Aug 20 2026

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

TONIGHT
N wind 5 to 15 kt. Waves around 2 ft or less.

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

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

SAT
S wind 10 to 15 kt, becoming SW 15 to 20 kt in the afternoon. Waves 1 to 3 ft. Scattered showers with a chance of tstms in the morning, then a chance of showers in the afternoon.

SAT NIGHT
SW wind 10 to 15 kt. Waves around 2 ft or less. A chance of showers in the evening.

SUN
S wind 5 to 10 kt. Waves 1 ft or less.

SUN NIGHT
N wind 5 to 10 kt. Waves 1 ft or less.

MON
N wind 5 to 10 kt. Waves 1 ft or less.

MON NIGHT
N wind 5 to 10 kt. Waves 1 ft or less.

Winds and waves higher in and near tstms.

PZZ110-202245
Grays Harbor Bar
232 AM PDT Thu Aug 20 2026

Combined seas 2 to 4 ft. Bar conditions light. Maximum ebb currents will occur around 1045 AM and 1130 PM today and 12 PM Friday.