National Weather Service Marine Forecast FZUS56 KSEW
FZUS56 KSEW 180933
CWFSEW
Coastal Waters Forecast for Washington
National Weather Service Seattle WA
233 AM PDT Thu Jun 18 2026
Inland waters of western Washington and the northern and central Washington coastal waters including the Olympic Coast National Marine Sanctuary
PZZ100-182245
233 AM PDT Thu Jun 18 2026
.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...Broad high pressure will remain situated over the northeast Pacific into early next week. Weak high pressure over area waters today will begin to weaken late tonight into Friday as a low pressure system moves over British Columbia. High pressure rebuilds on Saturday and will strengthen through early next week. Elevated seas and winds will continue for the coastal waters through the weekend.
PZZ150-182245
Coastal Waters From Cape Flattery To James Island Out 10 Nm
233 AM PDT Thu Jun 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
N wind 5 to 10 kt, becoming NW 10 to 15 kt this
afternoon. Seas 6 to 8 ft, subsiding to 5 to 6 ft this afternoon.
Wave Detail: W 8 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 9 ft. Wave Detail: NW 8 ft at 9 seconds and
SW 2 ft at 17 seconds.
FRI
NW wind around 5 kt, backing to W in the afternoon. Seas
7 to 8 ft. Wave Detail: W 8 ft at 10 seconds and SW 2 ft at
17 seconds.
FRI NIGHT
W wind 5 to 10 kt. Seas 7 to 10 ft. Wave Detail: W
10 ft at 10 seconds and SW 2 ft at 15 seconds.
SAT
S wind around 10 kt. Seas 7 to 9 ft, subsiding to 6 to
7 ft in the afternoon. Wave Detail: W 9 ft at 10 seconds and SW
2 ft at 15 seconds.
SAT NIGHT
SW 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.
SUN
S wind around 5 kt, veering to SW around 5 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: W 4 ft at 8 seconds and
SW 2 ft at 15 seconds.
SUN NIGHT
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
4 ft at 8 seconds and SW 2 ft at 15 seconds.
MON
N wind around 5 kt, backing to NW in the afternoon. Seas
4 to 5 ft. Wave Detail: W 4 ft at 7 seconds and SW 2 ft at
15 seconds.
MON NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW
5 ft at 7 seconds and SW 2 ft at 14 seconds.
PZZ153-182245
Coastal Waters From James Island To Point Grenville Out 10 Nm
233 AM PDT Thu Jun 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
N wind around 5 kt, backing to NW 10 to 15 kt. Seas 5 to
8 ft, subsiding to 5 to 6 ft this afternoon. Wave Detail: W 8 ft
at 10 seconds and SW 2 ft at 18 seconds.
TONIGHT
NW wind 15 to 20 kt, easing to 5 to 10 kt after
midnight. Seas 5 to 8 ft. Wave Detail: NW 8 ft at 9 seconds and
SW 2 ft at 17 seconds.
FRI
NW wind 5 to 10 kt. Seas 6 to 9 ft. Wave Detail: W 8 ft at
10 seconds and SW 2 ft at 17 seconds.
FRI NIGHT
NW wind 5 to 10 kt. Seas 6 to 9 ft. Wave Detail: W
9 ft at 10 seconds and SW 2 ft at 15 seconds.
SAT
SW wind 5 to 10 kt. Seas 6 to 9 ft. Wave Detail: W 9 ft at
10 seconds and SW 2 ft at 15 seconds.
SAT NIGHT
W wind 5 to 10 kt, becoming SW after midnight. Seas
5 to 7 ft. Wave Detail: W 6 ft at 9 seconds and SW 2 ft at
15 seconds.
SUN
SE wind around 5 kt, veering to W around 5 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: W 4 ft at 8 seconds and
SW 2 ft at 15 seconds.
SUN NIGHT
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: NW
5 ft at 7 seconds and SW 2 ft at 15 seconds.
MON
NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at
7 seconds and SW 2 ft at 15 seconds.
MON NIGHT
NW wind 10 to 15 kt. Seas 3 to 5 ft, building to
5 to 6 ft after midnight. Wave Detail: NW 5 ft at 8 seconds and
SW 2 ft at 14 seconds.
PZZ156-182245
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
233 AM PDT Thu Jun 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
N wind around 5 kt, backing to NW 10 to 15 kt. Seas 6 to
9 ft, subsiding to 5 to 7 ft this afternoon. Wave Detail: NW 8 ft
at 10 seconds and SW 2 ft at 18 seconds.
TONIGHT
NW wind 10 to 15 kt. Seas 6 to 9 ft. Wave Detail: NW
9 ft at 9 seconds and SW 2 ft at 17 seconds.
FRI
NW wind 5 to 10 kt, rising to 10 to 15 kt in the
afternoon. Seas 6 to 9 ft. Wave Detail: W 9 ft at 10 seconds and
SW 2 ft at 17 seconds.
FRI NIGHT
NW wind 10 to 15 kt. Seas 6 to 9 ft. Wave Detail: W
9 ft at 10 seconds and SW 2 ft at 15 seconds.
SAT
W wind 5 to 10 kt. Seas 6 to 9 ft. Wave Detail: NW 9 ft at
10 seconds and SW 2 ft at 15 seconds.
SAT NIGHT
W wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: W
6 ft at 9 seconds and SW 2 ft at 15 seconds.
SUN
NW wind around 5 kt, backing to W in the afternoon. Seas
4 to 6 ft. Wave Detail: NW 5 ft at 9 seconds and SW 2 ft at
15 seconds.
SUN NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW
5 ft at 8 seconds and SW 2 ft at 15 seconds.
MON
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft
at 7 seconds and SW 2 ft at 15 seconds.
MON NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW
7 ft at 7 seconds and SW 2 ft at 14 seconds.
PZZ170-182245
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
233 AM PDT Thu Jun 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
N wind 15 to 20 kt, becoming NW 10 to 15 kt late this
morning and early afternoon, rising to 15 to 20 kt late. Seas
7 to 10 ft. Wave Detail: NW 9 ft at 9 seconds and SW 3 ft at
17 seconds.
TONIGHT
NW wind 15 to 20 kt. Seas 9 to 12 ft. Wave Detail: NW
11 ft at 9 seconds and SW 3 ft at 16 seconds.
FRI
NW wind 15 to 20 kt. Seas 9 to 12 ft. Wave Detail: NW
11 ft at 9 seconds and SW 3 ft at 16 seconds.
FRI NIGHT
NW wind 20 to 25 kt. Seas 9 to 12 ft, building to
10 to 14 ft after midnight. Wave Detail: NW 13 ft at 10 seconds
and SW 2 ft at 15 seconds.
SAT
NW wind 20 to 25 kt, becoming W 15 to 20 kt in the
afternoon. Seas 9 to 12 ft, subsiding to 7 to 10 ft in the
afternoon. Wave Detail: NW 12 ft at 10 seconds and SW 3 ft at
15 seconds.
SAT NIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Seas 5 to 8 ft. Wave Detail: NW 7 ft at 9 seconds and
SW 3 ft at 15 seconds.
SUN
W wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at
9 seconds and SW 3 ft at 16 seconds.
SUN NIGHT
NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: NW
6 ft at 7 seconds and SW 3 ft at 15 seconds.
MON
NW wind 5 to 10 kt, rising to 10 to 15 kt in the
afternoon. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 8 seconds and
SW 3 ft at 15 seconds.
MON NIGHT
NW wind 10 to 15 kt, rising to 15 to 20 kt after
midnight. Seas 5 to 8 ft. Wave Detail: NW 8 ft at 8 seconds and
SW 2 ft at 15 seconds.
PZZ173-182245
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
233 AM PDT Thu Jun 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
N wind 15 to 20 kt. Seas 8 to 11 ft. Wave Detail: NW
10 ft at 10 seconds and SW 3 ft at 17 seconds.
TONIGHT
NW wind 20 to 25 kt. Seas 9 to 12 ft. Wave Detail: NW
11 ft at 9 seconds and SW 3 ft at 16 seconds.
FRI
NW wind 20 to 25 kt. Seas 9 to 13 ft. Wave Detail: NW
12 ft at 10 seconds and SW 3 ft at 16 seconds.
FRI NIGHT
NW wind 20 to 25 kt. Seas 10 to 14 ft. Wave Detail:
NW 14 ft at 10 seconds and SW 3 ft at 15 seconds.
SAT
NW wind 20 to 25 kt, becoming W 15 to 20 kt in the
afternoon. Seas 9 to 13 ft. Wave Detail: NW 13 ft at 10 seconds
and SW 3 ft at 15 seconds.
SAT NIGHT
NW wind 15 to 20 kt, easing to 10 to 15 kt after
midnight. Seas 7 to 10 ft, subsiding to 6 to 8 ft after midnight.
Wave Detail: NW 9 ft at 9 seconds and SW 3 ft at 14 seconds.
SUN
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 5 ft
at 8 seconds and SW 3 ft at 16 seconds.
SUN NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW
7 ft at 8 seconds and SW 3 ft at 15 seconds.
MON
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft
at 7 seconds and SW 3 ft at 15 seconds.
MON NIGHT
NW wind 15 to 20 kt. Seas 5 to 8 ft, building to
7 to 9 ft after midnight. Wave Detail: NW 9 ft at 8 seconds and
SW 2 ft at 14 seconds.
PZZ176-182245
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm
233 AM PDT Thu Jun 18 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TODAY
N wind 15 to 20 kt, easing to 10 to 15 kt late this
morning, then becoming NW 15 to 20 kt this afternoon. Seas 8 to
11 ft. Wave Detail: NW 10 ft at 10 seconds and SW 3 ft at
17 seconds.
TONIGHT
NW wind 15 to 20 kt. Seas 9 to 12 ft. Wave Detail: NW
11 ft at 9 seconds and SW 3 ft at 16 seconds.
FRI
NW wind 15 to 20 kt, rising to 20 to 25 kt in the
afternoon. Seas 9 to 13 ft. Wave Detail: NW 12 ft at 10 seconds
and SW 3 ft at 16 seconds.
FRI NIGHT
NW wind 20 to 25 kt. Seas 9 to 13 ft. Wave Detail:
NW 12 ft at 10 seconds and SW 3 ft at 15 seconds.
SAT
NW wind 15 to 20 kt. Seas 9 to 12 ft. Wave Detail: NW
12 ft at 10 seconds and SW 3 ft at 15 seconds.
SAT NIGHT
NW wind 10 to 15 kt. Seas 7 to 10 ft, subsiding to
7 to 8 ft after midnight. Wave Detail: NW 9 ft at 9 seconds and
SW 3 ft at 14 seconds.
SUN
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft
at 9 seconds and SW 3 ft at 16 seconds.
SUN NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW
7 ft at 7 seconds and SW 3 ft at 15 seconds.
MON
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW 6 ft
at 8 seconds and SW 3 ft at 15 seconds.
MON NIGHT
NW wind 15 to 20 kt. Seas 5 to 8 ft, building to
7 to 9 ft after midnight. Wave Detail: NW 8 ft at 8 seconds and
SW 2 ft at 14 seconds.
PZZ130-182245
West Entrance U.S. Waters Strait Of Juan De Fuca
233 AM PDT Thu Jun 18 2026
TODAY
E wind around 5 kt, backing to NW this afternoon. Seas
4 to 6 ft. Wave Detail: W 6 ft at 10 seconds.
TONIGHT
W wind 5 to 10 kt, easing to around 5 kt after
midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 9 seconds.
FRI
NW wind around 5 kt, backing to W in the afternoon. Seas
4 to 6 ft. Wave Detail: W 6 ft at 9 seconds.
FRI NIGHT
W wind 5 to 10 kt, backing to SW after midnight.
Seas 5 to 7 ft. Wave Detail: W 7 ft at 10 seconds.
SAT
S wind around 5 kt, veering to SW in the afternoon. Seas
4 to 6 ft. Wave Detail: W 6 ft at 10 seconds.
SAT NIGHT
W wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W
4 ft at 9 seconds.
SUN
SW wind around 5 kt, veering to W in the afternoon. Seas
3 to 4 ft. Wave Detail: W 3 ft at 8 seconds.
SUN NIGHT
W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: NW
3 ft at 7 seconds.
MON
E wind around 5 kt, backing to N in the afternoon. Seas
3 to 4 ft. Wave Detail: W 3 ft at 7 seconds.
MON NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 8 seconds.
PZZ131-182245
Central U.S. Waters Strait Of Juan De Fuca
233 AM PDT Thu Jun 18 2026
TODAY
E wind 5 to 10 kt, backing to W late. Waves around 3 ft
this morning, then around 2 ft or less.
TONIGHT
W wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.
FRI
NE wind around 5 kt. Waves around 2 ft or less.
FRI NIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Waves around 3 ft.
SAT
SW wind around 5 kt, veering to NE around 5 kt in the
afternoon. Waves around 3 ft in the morning, then around 2 ft or
less.
SAT NIGHT
W wind 10 to 15 kt. Waves around 3 ft.
SUN
W wind 5 to 10 kt, veering to NW in the afternoon. Waves
around 2 ft or less.
SUN NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
MON
NW wind around 5 kt, veering to NE around 5 kt in the
afternoon. Waves around 2 ft or less.
MON NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
PZZ132-182245
East Entrance U.S. Waters Strait Of Juan De Fuca
233 AM PDT Thu Jun 18 2026
TODAY
NW wind 5 to 10 kt. Waves around 2 ft or less.
TONIGHT
W wind 5 to 10 kt, becoming NW after midnight. Waves
around 2 ft or less.
FRI
N wind around 5 kt. Waves around 2 ft or less.
FRI NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less, then
around 3 ft after midnight.
SAT
SE wind 5 to 10 kt. Waves around 2 ft or less.
SAT NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
SUN
S wind around 5 kt, veering to NW around 5 kt in the
afternoon. Waves around 2 ft or less.
SUN NIGHT
W wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.
MON
NW wind around 5 kt. Waves around 2 ft or less.
MON NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
PZZ134-182245
Admiralty Inlet
233 AM PDT Thu Jun 18 2026
TODAY
NW wind 5 to 10 kt, rising to 10 to 15 kt late this
morning and afternoon. Waves around 2 ft or less.
TONIGHT
NW wind 5 to 10 kt. Waves around 2 ft or less.
FRI
NW wind 5 to 10 kt. Waves around 2 ft or less.
FRI NIGHT
NW wind around 5 kt, backing to SW after midnight.
Waves around 2 ft or less.
SAT
SE wind 5 to 10 kt. Waves around 2 ft or less.
SAT NIGHT
NW wind around 5 kt, backing to SW around 5 kt after
midnight. Waves around 2 ft or less.
SUN
S wind around 5 kt, veering to N in the afternoon. Waves
around 2 ft or less.
SUN NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.
MON
NW wind around 5 kt, rising to around 10 kt in the
afternoon. 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.
PZZ133-182245
Northern Inland Waters Including The San Juan Islands
233 AM PDT Thu Jun 18 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 5 to 10 kt. Waves around 2 ft or less.
FRI NIGHT
W wind around 5 kt, rising to 5 to 10 kt after
midnight. Waves around 2 ft or less.
SAT
S wind 5 to 10 kt. Waves around 2 ft or less.
SAT NIGHT
S wind around 5 kt. Waves around 2 ft or less.
SUN
S wind around 5 kt, veering to W in the afternoon. 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.
MON
Light and variable winds, becoming NW 5 to 10 kt in the
afternoon. Waves around 2 ft or less.
MON NIGHT
NW wind around 5 kt. Waves around 2 ft or less.
PZZ135-182245
Puget Sound and Hood Canal
233 AM PDT Thu Jun 18 2026
TODAY
N wind 5 to 10 kt, rising to 10 to 15 kt early this
afternoon, easing to 5 to 10 kt late. 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.
FRI
N wind around 5 kt, backing to NW in the afternoon. Waves
around 2 ft or less.
FRI NIGHT
W wind 5 to 10 kt, backing to SW after midnight.
Waves around 2 ft or less.
SAT
S wind 5 to 10 kt. Waves around 2 ft or less.
SAT NIGHT
SW wind 5 to 10 kt. Waves around 2 ft or less.
SUN
S wind around 5 kt, veering to N 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
N wind around 5 kt, rising to 5 to 10 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.
PZZ110-182245
Grays Harbor Bar
233 AM PDT Thu Jun 18 2026
Combined seas 6 to 9 ft. Bar conditions moderate. Maximum ebb currents will occur around 730 AM Thursday, 830 PM Thursday, and 830 AM Friday. The Thursday morning ebb will be very strong and the Friday morning ebb will be strong.