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National Weather Service Marine Forecast FZUS56 KSEW
FZUS56 KSEW 180844
CWFSEW
Coastal Waters Forecast for Washington
National Weather Service Seattle WA
144 AM PDT Sat Jul 18 2026
Inland waters of western Washington and the northern and central Washington coastal waters including the Olympic Coast National Marine Sanctuary
PZZ100-182145
144 AM PDT Sat Jul 18 2026
.SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...A broad surface ridge centered well offshore will expand eastward this weekend. Thermally induced surface low pressure is expected to deepen across the interior of Western Washington Monday through Wednesday. This will lead to varying degrees of onshore flow into the middle portion of the coming week.
PZZ150-182145
Coastal Waters From Cape Flattery To James Island Out 10 Nm
144 AM PDT Sat Jul 18 2026
TODAY
W wind around 5 kt, veering to NW this afternoon. Seas
4 to 5 ft. Wave Detail: W 4 ft at 10 seconds and W 2 ft at
15 seconds.
TONIGHT
NW wind 5 to 10 kt, becoming W after midnight. Seas
4 to 6 ft. Wave Detail: W 5 ft at 9 seconds and W 2 ft at
15 seconds.
SUN
S wind around 5 kt, veering to W around 5 kt in the
afternoon. Seas 5 to 6 ft. Wave Detail: W 5 ft at 8 seconds.
SUN NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Seas 5 to 6 ft. Wave Detail: W 5 ft at 8 seconds.
MON
N wind around 5 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at
8 seconds.
MON NIGHT
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
4 ft at 8 seconds and SW 2 ft at 16 seconds.
TUE
SW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft
at 8 seconds and SW 2 ft at 16 seconds.
TUE NIGHT
W wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds and SW 2 ft at 15 seconds.
WED
S wind around 5 kt. Seas around 5 ft. Wave Detail: W 5 ft
at 9 seconds and SW 2 ft at 15 seconds.
WED NIGHT
SW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds and SW 2 ft at 15 seconds.
PZZ153-182145
Coastal Waters From James Island To Point Grenville Out 10 Nm
144 AM PDT Sat Jul 18 2026
TODAY
NW wind around 5 kt, rising to 10 to 15 kt. Seas 3 to
5 ft. Wave Detail: W 4 ft at 9 seconds and W 2 ft at 15 seconds.
TONIGHT
NW wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Seas 4 to 6 ft. Wave Detail: N 2 ft at 4 seconds, NW
6 ft at 9 seconds and W 2 ft at 15 seconds.
SUN
NW wind around 5 kt, rising to 5 to 10 kt in the
afternoon. Seas 4 to 5 ft. Wave Detail: W 5 ft at 8 seconds.
SUN NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: N
2 ft at 4 seconds and NW 6 ft at 8 seconds.
MON
NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft
at 8 seconds. Patchy fog in the morning.
MON NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 8 seconds.
TUE
NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft
at 8 seconds.
TUE NIGHT
NW wind around 5 kt. Seas 3 to 5 ft. Wave Detail: NW
4 ft at 9 seconds and SW 2 ft at 15 seconds. Patchy fog after
midnight.
WED
S wind around 5 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft
at 9 seconds and SW 2 ft at 15 seconds.
WED NIGHT
W wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds and SW 2 ft at 15 seconds.
PZZ156-182145
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm
144 AM PDT Sat Jul 18 2026
TODAY
NW wind around 5 kt, rising to 10 to 15 kt. Seas 4 to
6 ft. Wave Detail: W 5 ft at 10 seconds and W 2 ft at 15 seconds.
TONIGHT
NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: NW
3 ft at 4 seconds, NW 7 ft at 9 seconds and W 2 ft at 15 seconds.
SUN
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
W 2 ft at 15 seconds.
SUN NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: N
2 ft at 4 seconds and NW 7 ft at 8 seconds.
MON
N wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at
8 seconds.
MON NIGHT
NW wind around 10 kt, easing to around 5 kt after
midnight. Seas 4 to 5 ft. Wave Detail: NW 2 ft at 3 seconds and W
5 ft at 8 seconds.
TUE
N wind around 5 kt, backing to NW in the afternoon. Seas
3 to 5 ft. Wave Detail: NW 4 ft at 8 seconds.
TUE NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 9 seconds.
WED
SW wind around 5 kt, veering to W in the afternoon. Seas
4 to 5 ft. Wave Detail: W 5 ft at 9 seconds and SW 2 ft at
15 seconds.
WED NIGHT
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: W
5 ft at 9 seconds and SW 2 ft at 15 seconds.
PZZ170-182145
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm
144 AM PDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING
TODAY
NW wind 5 to 10 kt, rising to 10 to 15 kt late. Seas
4 to 6 ft. Wave Detail: NW 5 ft at 9 seconds, W 2 ft at
15 seconds and SW 2 ft at 18 seconds.
TONIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NE
2 ft at 5 seconds, NW 7 ft at 8 seconds and W 2 ft at 15 seconds.
SUN
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW 7 ft
at 8 seconds, W 2 ft at 15 seconds and SW 2 ft at 18 seconds.
SUN NIGHT
NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: N
2 ft at 4 seconds, NW 7 ft at 8 seconds and SW 2 ft at
18 seconds.
MON
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 6 ft
at 8 seconds and SW 2 ft at 17 seconds.
MON NIGHT
NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW
5 ft at 8 seconds and SW 2 ft at 17 seconds.
TUE
W wind around 5 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft
at 8 seconds and SW 2 ft at 16 seconds.
TUE NIGHT
NW wind 5 to 10 kt, easing to around 5 kt after
midnight. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 9 seconds and S
2 ft at 15 seconds.
WED
W wind around 5 kt, rising to 5 to 10 kt in the afternoon.
Seas 5 to 6 ft. Wave Detail: NW 6 ft at 9 seconds, S 2 ft at
13 seconds and SW 2 ft at 15 seconds.
WED NIGHT
W wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW
6 ft at 9 seconds and S 3 ft at 14 seconds.
PZZ173-182145
Coastal Waters From James Island To Point Grenville 10 To 60 Nm
144 AM PDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING
TODAY
NW wind 5 to 10 kt, rising to 10 to 15 kt late. Seas
5 to 7 ft. Wave Detail: NE 3 ft at 4 seconds, NW 5 ft at
10 seconds and W 2 ft at 15 seconds.
TONIGHT
NW wind 15 to 25 kt. Seas 6 to 8 ft. Wave Detail: N
4 ft at 5 seconds, NW 7 ft at 8 seconds and W 2 ft at 15 seconds.
SUN
NW wind 15 to 25 kt. Seas 6 to 9 ft. Wave Detail: NE 3 ft
at 5 seconds, NW 8 ft at 8 seconds and W 2 ft at 15 seconds.
SUN NIGHT
NW wind 15 to 25 kt. Seas 6 to 9 ft. Wave Detail: NE
4 ft at 5 seconds, NW 7 ft at 8 seconds and W 2 ft at 14 seconds.
MON
NW wind 5 to 10 kt. Seas 5 to 8 ft. Wave Detail: NE 2 ft
at 5 seconds, NW 7 ft at 8 seconds and SW 2 ft at 17 seconds.
MON NIGHT
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NE
3 ft at 4 seconds, NW 5 ft at 8 seconds and SW 2 ft at
17 seconds.
TUE
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: NW 6 ft
at 8 seconds and S 2 ft at 16 seconds.
TUE NIGHT
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW
7 ft at 9 seconds and S 2 ft at 14 seconds.
WED
NW wind around 5 kt, backing to W in the afternoon. Seas
5 to 8 ft. Wave Detail: NW 7 ft at 9 seconds and S 3 ft at
14 seconds.
WED NIGHT
NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: N
2 ft at 3 seconds, NW 7 ft at 9 seconds and S 3 ft at 14 seconds.
PZZ176-182145
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm
144 AM PDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY MORNING
TODAY
NW wind 5 to 10 kt, rising to 10 to 15 kt late. Seas
5 to 7 ft. Wave Detail: N 3 ft at 4 seconds, NW 6 ft at
10 seconds and W 2 ft at 15 seconds.
TONIGHT
NW wind 15 to 25 kt. Seas 6 to 8 ft. Wave Detail: NW
7 ft at 7 seconds, W 2 ft at 15 seconds and SW 2 ft at
17 seconds.
SUN
NW wind 15 to 25 kt, easing to 10 to 15 kt in the
afternoon. Seas 6 to 8 ft. Wave Detail: N 2 ft at 5 seconds, NW
7 ft at 8 seconds and W 2 ft at 15 seconds.
SUN NIGHT
NW wind 15 to 25 kt. Seas 7 to 8 ft. Wave Detail: N
2 ft at 4 seconds, NW 8 ft at 8 seconds and SW 2 ft at
17 seconds.
MON
N wind 10 to 15 kt, becoming NW 5 to 10 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: NW 7 ft at 8 seconds and
SW 2 ft at 17 seconds.
MON NIGHT
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: N
2 ft at 4 seconds, NW 6 ft at 8 seconds and SW 2 ft at
17 seconds.
TUE
NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft
at 8 seconds and S 2 ft at 16 seconds.
TUE NIGHT
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: NW
6 ft at 9 seconds and S 2 ft at 13 seconds.
WED
NW wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: NW 6 ft
at 9 seconds and S 2 ft at 13 seconds.
WED NIGHT
NW wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: NW
7 ft at 9 seconds and S 3 ft at 14 seconds.
PZZ130-182145
West Entrance U.S. Waters Strait Of Juan De Fuca
144 AM PDT Sat Jul 18 2026
TODAY
W wind 5 to 10 kt, rising to 10 to 15 kt late. Seas 3 to
4 ft. Wave Detail: W 4 ft at 9 seconds.
TONIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds.
SUN
SW wind around 5 kt, veering to NW in the afternoon. Seas
3 to 4 ft. Wave Detail: W 4 ft at 8 seconds.
SUN NIGHT
NW wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 8 seconds.
MON
NE wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft
at 8 seconds.
MON NIGHT
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 8 seconds.
TUE
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at
8 seconds.
TUE NIGHT
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 8 seconds.
WED
W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at
9 seconds.
WED NIGHT
W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W
4 ft at 9 seconds.
PZZ131-182145
Central U.S. Waters Strait Of Juan De Fuca
144 AM PDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATE TONIGHT
TODAY
W wind 5 to 10 kt, rising to 20 to 25 kt. Waves around
2 ft or less, then 3 to 4 ft this afternoon.
TONIGHT
W wind 20 to 25 kt, easing to 15 to 20 kt after
midnight. Waves 4 to 6 ft, subsiding to 3 to 4 ft after midnight.
SUN
W wind around 5 kt, veering to N around 5 kt in the
afternoon. Waves around 2 ft or less.
SUN NIGHT
W wind around 5 kt. Waves around 2 ft or less.
MON
NE wind around 5 kt. Waves around 2 ft or less.
MON NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
TUE
W wind around 5 kt. Waves around 2 ft or less.
TUE NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
WED
W wind around 5 kt. Waves around 2 ft or less.
WED NIGHT
W wind 10 to 15 kt, easing to 5 to 10 kt after
midnight. Waves around 2 ft or less.
PZZ132-182145
East Entrance U.S. Waters Strait Of Juan De Fuca
144 AM PDT Sat Jul 18 2026
SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH LATE TONIGHT
TODAY
SW wind 5 to 10 kt, becoming W 15 to 25 kt late. Waves
around 2 ft or less, then around 3 ft this afternoon.
TONIGHT
W wind 15 to 25 kt. Waves 3 to 5 ft.
SUN
W wind around 5 kt. Waves around 2 ft or less.
SUN NIGHT
W wind around 5 kt. Waves around 2 ft or less.
MON
NW wind around 5 kt. Waves around 2 ft or less.
MON NIGHT
W wind around 5 kt. Waves around 2 ft or less.
TUE
SW wind around 5 kt, veering to NW in the afternoon. Waves
around 2 ft or less.
TUE NIGHT
W wind 5 to 10 kt. Waves around 2 ft or less.
WED
W wind around 5 kt. Waves around 2 ft or less.
WED NIGHT
W wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less.
PZZ134-182145
Admiralty Inlet
144 AM PDT Sat Jul 18 2026
TODAY
SW wind around 5 kt, veering to NW around 5 kt early
this afternoon, rising to 10 to 15 kt late. Waves around 2 ft or
less.
TONIGHT
NW wind 10 to 15 kt. Waves around 3 ft in the evening,
then around 2 ft or less.
SUN
NW wind 5 to 10 kt. 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 around 5 kt. Waves around 2 ft or less.
TUE
Light and variable winds, becoming NW 5 to 10 kt in the
afternoon. 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 NW around 5 kt in the
afternoon. Waves around 2 ft or less.
WED NIGHT
NW wind 5 to 10 kt, becoming W after midnight. Waves
around 2 ft or less.
PZZ133-182145
Northern Inland Waters Including The San Juan Islands
144 AM PDT Sat Jul 18 2026
TODAY
S wind around 5 kt, rising to 5 to 10 kt late this
morning and afternoon. Waves around 2 ft or less.
TONIGHT
SW wind 5 to 10 kt, becoming W after midnight. 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 around 5 kt. Waves around 2 ft or less.
MON
NW wind around 5 kt. Waves around 2 ft or less.
MON NIGHT
SW wind around 5 kt, backing to SE after midnight.
Waves around 2 ft or less.
TUE
Light and variable winds, becoming W around 5 kt in the
afternoon. Waves around 2 ft or less.
TUE NIGHT
SW wind around 5 kt, backing to SE after midnight.
Waves around 2 ft or less.
WED
Light and variable winds, becoming W around 5 kt in the
afternoon. Waves around 2 ft or less.
WED NIGHT
S wind around 5 kt. Waves around 2 ft or less.
PZZ135-182145
Puget Sound and Hood Canal
144 AM PDT Sat Jul 18 2026
TODAY
S wind around 5 kt, veering to N early this afternoon,
rising to 5 to 10 kt late. Waves around 2 ft or less. Patchy fog
early this morning.
TONIGHT
N wind 5 to 10 kt, easing to around 5 kt after
midnight. Waves around 2 ft or less. Patchy fog after midnight.
SUN
N wind around 5 kt, rising to 5 to 10 kt in the afternoon.
Waves around 2 ft or less. Patchy fog in the morning.
SUN NIGHT
N wind 5 to 10 kt. 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 around 5 kt. Waves around 2 ft or less.
TUE
Light and variable winds, becoming N around 5 kt in the
afternoon. Waves around 2 ft or less.
TUE NIGHT
N wind 5 to 10 kt, becoming NW after midnight. Waves
around 2 ft or less.
WED
Light and variable winds, becoming W around 5 kt in the
afternoon. Waves around 2 ft or less.
WED NIGHT
NW wind 5 to 10 kt, becoming W after midnight. Waves
around 2 ft or less.
PZZ110-182145
Grays Harbor Bar
144 AM PDT Sat Jul 18 2026
Combined seas 3 to 5 feet. Bar conditions light. Maximum ebb currents will occur around 800 AM Saturday, 845 PM Saturday, and 845 AM Sunday.
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