Coastal Waters Forecast
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
019 FZUS56 KSEW 202148 CWFSEW Coastal Waters Forecast for Washington National Weather Service Seattle WA 248 PM 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 PZZ100-211100- 248 PM 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. A frontal system will pass over the waters on Tuesday. $$ PZZ150-211100- Coastal Waters From Cape Flattery To James Island Out 10 Nm- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 11 seconds. .FRI...S wind around 5 kt. Seas around 4 ft. Wave Detail: W 4 ft at 9 seconds. .FRI NIGHT...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds. A chance of showers after midnight. .SAT...S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 8 seconds and S 3 ft at 9 seconds. A chance of showers. .SAT NIGHT...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 3 ft at 8 seconds. A chance of showers in the evening. .SUN...SW wind around 5 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds and S 2 ft at 10 seconds. .SUN NIGHT...NW wind around 5 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds. .MON...N wind 5 to 10 kt. Seas around 3 ft. Wave Detail: NW 3 ft at 7 seconds. .MON NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 5 seconds. .TUE...W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SW 2 ft at 17 seconds. .TUE NIGHT...NW wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 6 seconds and SW 2 ft at 16 seconds. $$ PZZ153-211100- Coastal Waters From James Island To Point Grenville Out 10 Nm- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: 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. A chance of showers after midnight. .SAT...S wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and W 4 ft at 8 seconds. A chance of showers. .SAT NIGHT...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 8 seconds and W 3 ft at 8 seconds. .SUN...SW wind around 5 kt, veering to W in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and S 2 ft at 10 seconds. .SUN NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds. .MON...N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 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: NW 5 ft at 5 seconds. .TUE...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SW 2 ft at 17 seconds. .TUE NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SW 2 ft at 16 seconds. $$ PZZ156-211100- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 9 seconds. .FRI...S wind around 5 kt, veering to SW in the afternoon. Seas 3 to 4 ft. Wave Detail: W 4 ft at 9 seconds. .FRI NIGHT...S wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 8 seconds and SW 2 ft at 14 seconds. A chance of showers after midnight. .SAT...S wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds. A chance of showers in the morning. .SAT NIGHT...S wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 6 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: S 4 ft at 7 seconds and W 3 ft at 8 seconds. .SUN...SW wind 5 to 10 kt, veering to W in the afternoon. Seas 3 to 4 ft. Wave Detail: W 3 ft at 7 seconds and SW 2 ft at 14 seconds. .SUN NIGHT...NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 7 seconds. .MON...N wind 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 6 seconds. .MON NIGHT...NW wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: N 5 ft at 5 seconds. .TUE...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and SW 2 ft at 17 seconds. .TUE NIGHT...NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 6 seconds and SW 2 ft at 16 seconds. $$ PZZ170-211100- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind around 5 kt. Seas 4 to 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: NW 5 ft at 9 seconds and S 2 ft at 15 seconds. .FRI NIGHT...S wind around 5 kt. Seas 4 to 5 ft. Wave Detail: W 4 ft at 8 seconds and S 2 ft at 14 seconds. .SAT...S wind 5 to 10 kt. Seas around 4 ft. Wave Detail: W 4 ft at 8 seconds and SE 3 ft at 9 seconds. A chance of showers. .SAT NIGHT...S wind 5 to 10 kt, veering to SW after midnight. Seas around 4 ft. Wave Detail: W 4 ft at 8 seconds and S 3 ft at 9 seconds. .SUN...W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 8 seconds and S 2 ft at 10 seconds. .SUN NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 8 seconds and S 2 ft at 13 seconds. .MON...N wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 7 seconds and S 2 ft at 16 seconds. .MON NIGHT...NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and S 2 ft at 16 seconds. .TUE...NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 7 seconds and S 2 ft at 16 seconds. .TUE NIGHT...NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and SW 2 ft at 15 seconds. $$ PZZ173-211100- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 5 ft at 9 seconds and SW 2 ft at 15 seconds. .FRI...SW wind around 5 kt. Seas around 5 ft. Wave Detail: NW 5 ft at 9 seconds and S 2 ft at 15 seconds. .FRI NIGHT...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 9 seconds and SW 2 ft at 14 seconds. .SAT...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 8 seconds and SE 3 ft at 9 seconds. A chance of showers. .SAT NIGHT...S wind 5 to 10 kt, veering to W after midnight. Seas 4 to 5 ft. Wave Detail: W 4 ft at 8 seconds and SE 3 ft at 9 seconds. .SUN...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 7 seconds and S 2 ft at 10 seconds. .SUN NIGHT...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 7 seconds and S 2 ft at 14 seconds. .MON...N wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: N 4 ft at 6 seconds and S 2 ft at 16 seconds. .MON NIGHT...NW wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and S 2 ft at 16 seconds. .TUE...NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and S 2 ft at 16 seconds. .TUE NIGHT...NW wind around 10 kt. Seas 4 to 6 ft. Wave Detail: NW 5 ft at 6 seconds and SW 2 ft at 15 seconds. $$ PZZ176-211100- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: NW 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: NW 5 ft at 8 seconds and SW 2 ft at 15 seconds. .FRI NIGHT...S wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 8 seconds and S 2 ft at 14 seconds. .SAT...S wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: SE 4 ft at 7 seconds and NW 4 ft at 8 seconds. A chance of showers in the morning. .SAT NIGHT...SW wind 5 to 10 kt, veering to W after midnight. Seas 4 to 5 ft. Wave Detail: NW 4 ft at 8 seconds and SE 4 ft at 8 seconds. .SUN...NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 7 seconds and S 2 ft at 11 seconds. .SUN NIGHT...N wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: N 5 ft at 5 seconds and SW 2 ft at 14 seconds. .MON...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. .MON NIGHT...NW wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: NW 6 ft at 6 seconds and SW 2 ft at 16 seconds. .TUE...NW wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and S 2 ft at 16 seconds. .TUE NIGHT...NW wind around 10 kt. Seas 5 to 6 ft. Wave Detail: NW 5 ft at 6 seconds and SW 2 ft at 15 seconds. $$ PZZ130-211100- West Entrance U.S. Waters Strait Of Juan De Fuca- 248 PM PDT Thu Aug 20 2026 .TONIGHT...W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 10 seconds. .FRI...W wind around 5 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 9 seconds. .FRI NIGHT...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds. A chance of showers after midnight. .SAT...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 8 seconds. A chance of showers in the morning, then showers likely in the afternoon. .SAT NIGHT...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 7 seconds. A chance of showers in the evening, then a chance of rain after midnight. .SUN...W wind around 5 kt. Seas around 3 ft in the morning, then around 2 ft or less. Wave Detail: W 2 ft at 7 seconds. .SUN NIGHT...W wind 5 to 10 kt. Seas around 2 ft or less. Wave Detail: W 2 ft at 7 seconds. .MON...E wind around 5 kt, backing to N in the afternoon. Seas around 2 ft or less. Wave Detail: W 2 ft at 8 seconds. .MON NIGHT...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 7 seconds. .TUE...W wind 5 to 10 kt. Seas around 3 ft. Wave Detail: W 3 ft at 7 seconds. .TUE NIGHT...W wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 6 seconds. $$ PZZ131-211100- Central U.S. Waters Strait Of Juan De Fuca- 248 PM PDT Thu Aug 20 2026 .TONIGHT...W wind around 5 kt. Waves around 2 ft or less. .FRI...W wind 5 to 10 kt. Waves around 2 ft or less. .FRI NIGHT...W wind 15 to 20 kt. Waves 3 to 4 ft. A chance of showers after midnight. .SAT...W wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Waves 3 to 4 ft. A chance of showers in the morning, then showers likely in the afternoon. .SAT NIGHT...W wind 10 to 15 kt. Waves around 3 ft. A chance of showers in the evening. .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 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. .TUE...W wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. .TUE NIGHT...W wind 15 to 20 kt. Waves 3 to 4 ft. $$ PZZ132-211100- East Entrance U.S. Waters Strait Of Juan De Fuca- 248 PM PDT Thu Aug 20 2026 .TONIGHT...W wind around 5 kt. Waves around 2 ft or less. .FRI...W wind around 5 kt. Waves around 2 ft or less. .FRI NIGHT...W wind 5 to 10 kt, becoming SW 10 to 15 kt after midnight. Waves around 2 ft or less, then around 3 ft after midnight. A chance of showers after midnight. .SAT...SW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Waves around 3 ft. Showers likely. .SAT NIGHT...SW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Showers likely in the evening, then a chance of rain after midnight. .SUN...SW wind 5 to 10 kt. Waves around 2 ft or less. .SUN NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less. .MON...NW wind 5 to 10 kt. Waves around 2 ft or less. .MON NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less. .TUE...SW wind 5 to 10 kt. Waves around 2 ft or less. .TUE NIGHT...W wind 10 to 15 kt. Waves around 3 ft. $$ PZZ134-211100- Admiralty Inlet- 248 PM PDT Thu Aug 20 2026 .TONIGHT...NW wind around 5 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. Waves around 2 ft or less. A chance of showers after midnight. .SAT...S wind around 5 kt. Waves around 2 ft or less. Showers likely. .SAT NIGHT...W wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. A chance of showers in the evening, then a chance of rain after midnight. .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. 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, becoming W after midnight. Waves around 2 ft or less. .TUE...S 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. $$ PZZ133-211100- Northern Inland Waters Including The San Juan Islands- 248 PM PDT Thu Aug 20 2026 .TONIGHT...W wind around 5 kt early this evening, becoming light and variable. Waves around 2 ft or less. .FRI...NW wind around 5 kt. Waves around 2 ft or less. .FRI NIGHT...S wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers after midnight. .SAT...S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. Showers likely. .SAT NIGHT...S wind 5 to 10 kt. Waves around 2 ft or less. Showers likely in the evening, then a chance of rain after midnight. .SUN...S wind 5 to 10 kt. Waves around 2 ft or less. .SUN NIGHT...SW wind around 5 kt, veering to N after midnight. Waves around 2 ft or less. .MON...N wind around 5 kt, backing to NW in the afternoon. Waves around 2 ft or less. .MON NIGHT...W wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. .TUE...S wind around 5 kt. Waves around 2 ft or less. .TUE NIGHT...S wind 5 to 10 kt. Waves around 2 ft or less. $$ PZZ135-211100- Puget Sound and Hood Canal- 248 PM PDT Thu Aug 20 2026 .TONIGHT...N wind 5 to 10 kt, easing to around 5 kt late this evening and overnight. Waves around 2 ft or less. .FRI...N wind around 5 kt. Waves around 2 ft or less. .FRI NIGHT...W wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. A chance of showers after midnight. .SAT...S wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers. .SAT NIGHT...SW wind 5 to 10 kt. Waves around 2 ft or less. A chance of showers in the evening, then a chance of rain after midnight. .SUN...S wind 5 to 10 kt. Waves around 2 ft or less. .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 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less. .TUE...Light and variable winds, becoming SW around 5 kt in the afternoon. Waves around 2 ft or less. .TUE NIGHT...NW wind 5 to 10 kt, becoming SW after midnight. Waves around 2 ft or less. $$ PZZ110-211100- Grays Harbor Bar- 248 PM PDT Thu Aug 20 2026 Combined seas 2 to 4 ft. Bar conditions light. Maximum ebb currents will occur around 1130 PM Thursday, 1200 PM Friday, and 1245 AM Saturday. $$