FZUS56 KSEW 181205 CWFSEW Coastal Waters Forecast for Washington National Weather Service Seattle WA 505 AM PDT Mon May 18 2026 Inland waters of western Washington and the northern and central Washington coastal waters including the Olympic Coast National Marine Sanctuary PZZ100-190115- 505 AM PDT Mon May 18 2026 .SYNOPSIS FOR THE NORTHERN AND CENTRAL WASHINGTON COASTAL AND INLAND WATERS...High pressure will remain offshore throughout the week. A weak, splitting frontal system will move into the waters tonight into Tuesday. High pressure will then build back into the waters around midweek before another weak frontal system moves into the area Thursday into Friday. Onshore flow will persist over the next several days, with daily westerly pushes expected along the Strait of Juan de Fuca. $$ PZZ150-190115- Coastal Waters From Cape Flattery To James Island Out 10 Nm- 505 AM PDT Mon May 18 2026 .TODAY...NW wind 10 to 15 kt. Seas 6 to 7 ft, building to 8 ft this afternoon. Wave Detail: W 8 ft at 15 seconds. .TONIGHT...W wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 15 seconds. .TUE...W wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 7 ft at 13 seconds. .TUE NIGHT...NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: W 7 ft at 12 seconds. .WED...NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 9 seconds. .WED NIGHT...NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 11 seconds. .THU...NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave Detail: W 6 ft at 8 seconds. .THU NIGHT...NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: W 8 ft at 10 seconds. .FRI...NW wind 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: W 8 ft at 10 seconds. .FRI NIGHT...NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 10 seconds. $$ PZZ153-190115- Coastal Waters From James Island To Point Grenville Out 10 Nm- 505 AM PDT Mon May 18 2026 .TODAY...NW wind 10 to 15 kt. Seas 5 to 7 ft, building to 7 to 8 ft this afternoon. Wave Detail: W 8 ft at 16 seconds. .TONIGHT...NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 6 to 8 ft. Wave Detail: W 7 ft at 15 seconds. .TUE...NW wind 5 to 10 kt. Seas 6 to 7 ft. Wave Detail: W 7 ft at 13 seconds. .TUE NIGHT...NW wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: W 7 ft at 12 seconds. .WED...NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 10 seconds. .WED NIGHT...NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 5 to 7 ft. Wave Detail: W 7 ft at 9 seconds. .THU...NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: W 6 ft at 10 seconds. .THU NIGHT...NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: NW 8 ft at 9 seconds. .FRI...NW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: W 8 ft at 10 seconds. .FRI NIGHT...NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 9 seconds. $$ PZZ156-190115- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm- 505 AM PDT Mon May 18 2026 .TODAY...NW wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 11 seconds. .TONIGHT...NW wind 10 to 15 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 14 seconds. .TUE...NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 6 to 7 ft. Wave Detail: W 7 ft at 13 seconds. .TUE NIGHT...NW wind around 15 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 12 seconds. .WED...NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 11 seconds. .WED NIGHT...NW wind 10 to 15 kt. Seas 5 to 8 ft. Wave Detail: NW 8 ft at 9 seconds. .THU...NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: NW 7 ft at 9 seconds. .THU NIGHT...NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 8 seconds. .FRI...NW wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: NW 8 ft at 10 seconds. .FRI NIGHT...NW wind around 15 kt. Seas 5 to 6 ft, building to 6 to 8 ft after midnight. Wave Detail: NW 8 ft at 10 seconds. $$ PZZ170-190115- Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- 505 AM PDT Mon May 18 2026 .TODAY...W wind 10 to 15 kt. Seas 6 to 7 ft, building to 8 ft this afternoon. Wave Detail: W 8 ft at 15 seconds. .TONIGHT...W wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 14 seconds. .TUE...NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 7 to 8 ft. Wave Detail: W 8 ft at 12 seconds. .TUE NIGHT...NW wind 10 to 15 kt, rising to 15 to 20 kt after midnight. Seas around 8 ft. Wave Detail: W 8 ft at 12 seconds. .WED...NW wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Seas 6 to 8 ft. Wave Detail: W 8 ft at 9 seconds. .WED NIGHT...NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: NW 8 ft at 7 seconds. .THU...NW wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: NW 7 ft at 7 seconds. .THU NIGHT...NW wind 15 to 20 kt, rising to 20 to 25 kt after midnight. Seas 7 to 9 ft. Wave Detail: NW 9 ft at 10 seconds. .FRI...NW wind 15 to 20 kt. Seas around 8 ft, subsiding to 6 to 9 ft in the afternoon. Wave Detail: NW 8 ft at 10 seconds. .FRI NIGHT...NW wind 20 to 25 kt. Seas 7 to 10 ft. Wave Detail: NW 10 ft at 9 seconds. $$ PZZ173-190115- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- 505 AM PDT Mon May 18 2026 .TODAY...NW wind 10 to 15 kt. Seas 6 to 7 ft, building to 8 ft this afternoon. Wave Detail: W 7 ft at 15 seconds. .TONIGHT...W wind 5 to 10 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 15 seconds. .TUE...NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 7 to 8 ft. Wave Detail: W 7 ft at 13 seconds. .TUE NIGHT...NW wind 15 to 20 kt. Seas 7 to 8 ft. Wave Detail: W 8 ft at 12 seconds. .WED...NW wind 15 to 20 kt. Seas 7 to 8 ft. Wave Detail: NW 8 ft at 9 seconds. .WED NIGHT...NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave Detail: NW 8 ft at 9 seconds. .THU...NW wind 15 to 20 kt. Seas 7 to 8 ft. Wave Detail: NW 7 ft at 9 seconds. .THU NIGHT...NW wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: NW 9 ft at 9 seconds. .FRI...NW wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: NW 9 ft at 10 seconds. .FRI NIGHT...NW wind 20 to 25 kt. Seas 6 to 9 ft. Wave Detail: NW 9 ft at 9 seconds. $$ PZZ176-190115- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 505 AM PDT Mon May 18 2026 .TODAY...NW wind 10 to 15 kt. Seas 6 to 7 ft, building to 8 ft this afternoon. Wave Detail: W 8 ft at 15 seconds. .TONIGHT...NW wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas around 8 ft. Wave Detail: W 8 ft at 15 seconds. .TUE...NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 7 to 8 ft. Wave Detail: W 8 ft at 13 seconds. .TUE NIGHT...NW wind 15 to 20 kt. Seas 7 to 8 ft. Wave Detail: W 7 ft at 12 seconds. .WED...NW wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Seas 7 to 8 ft. Wave Detail: W 7 ft at 11 seconds. .WED NIGHT...NW wind 15 to 20 kt. Seas 6 to 9 ft, building to 8 ft after midnight. Wave Detail: NW 8 ft at 10 seconds. .THU...NW wind 15 to 20 kt, easing to 10 to 15 kt in the afternoon. Seas 7 to 9 ft. Wave Detail: NW 7 ft at 10 seconds. .THU NIGHT...NW wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: NW 9 ft at 10 seconds. .FRI...NW wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: NW 9 ft at 9 seconds. .FRI NIGHT...NW wind 15 to 20 kt. Seas 6 to 9 ft. Wave Detail: NW 9 ft at 9 seconds. $$ PZZ130-190115- West Entrance U.S. Waters Strait Of Juan De Fuca- 505 AM PDT Mon May 18 2026 .TODAY...W wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 14 seconds. .TONIGHT...W wind 10 to 15 kt, easing to 5 to 10 kt aftermidnight. Seas 5 to 7 ft. Wave Detail: W 7 ft at 13 seconds. .TUE...W wind around 5 kt, rising to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: W 6 ft at 12 seconds. .TUE NIGHT...W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 12 seconds. .WED...SE wind around 5 kt, backing to NW around 5 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: W 6 ft at 11 seconds. .WED NIGHT...W wind around 10 kt, easing to around 5 kt after midnight. Seas 3 to 5 ft. Wave Detail: W 5 ft at 11 seconds. .THU...W wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 8 seconds. .THU NIGHT...W wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 6 ft at 10 seconds. .FRI...W wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 10 seconds. .FRI NIGHT...W wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 10 seconds. $$ PZZ131-190115- Central U.S. Waters Strait Of Juan De Fuca- 505 AM PDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM PDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM PDT THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...W wind 20 to 25 kt, easing to 10 to 15 kt this morning, then rising to 20 to 25 kt this afternoon. Waves 3 to 6 ft. .TONIGHT...W wind 20 to 25 kt. Waves 3 to 5 ft. .TUE...W wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Waves 3 to 4 ft. .TUE NIGHT...W wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Waves 3 to 4 ft. .WED...W wind 5 to 10 kt, veering 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...NW wind around 5 kt. Waves around 2 ft or less. .THU NIGHT...W wind 15 to 20 kt. Waves 3 to 4 ft. .FRI...NW wind 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...W wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Waves 3 to 4 ft. $$ PZZ132-190115- East Entrance U.S. Waters Strait Of Juan De Fuca- 505 AM PDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM PDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM PDT THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...W wind 20 to 25 kt, easing to 10 to 15 kt this morning, then rising to 20 to 25 kt this afternoon. Waves 3 to 6 ft. .TONIGHT...W wind 20 to 25 kt. Waves 3 to 5 ft. .TUE...SW wind 5 to 10 kt. Waves around 2 ft or less. .TUE NIGHT...W wind 10 to 15 kt. Waves around 3 ft. .WED...NW wind 5 to 10 kt. Waves around 2 ft or less. .WED NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less. .THU...NW wind around 5 kt. Waves around 2 ft or less. .THU NIGHT...W wind 10 to 15 kt. Waves around 3 ft. .FRI...W wind around 5 kt. Waves around 2 ft or less. .FRI NIGHT...W wind 5 to 10 kt, rising to 10 to 15 kt after midnight. Waves around 2 ft or less, then 3 ft after midnight. $$ PZZ134-190115- Admiralty Inlet- 505 AM PDT Mon May 18 2026 .TODAY...SW wind around 5 kt, veering to NW this afternoon. Waves around 2 ft or less. .TONIGHT...NW wind 10 to 15 kt, becoming SW 5 to 10 kt after midnight. Waves around 2 to 3 ft. .TUE...S wind around 5 kt, veering to NW around 5 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...W wind around 5 kt, veering to NW in the afternoon. Waves around 2 ft or less. .WED NIGHT...NW wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less. .THU...W wind around 5 kt, veering to NW in the afternoon. Waves around 2 ft or less. .THU NIGHT...NW wind 5 to 10 kt. Waves around 2 ft or less. .FRI...SW wind around 5 kt, veering to NW in the afternoon. Waves around 2 ft or less. .FRI NIGHT...W wind 5 to 10 kt. Waves around 2 ft or less. $$ PZZ133-190115- Northern Inland Waters Including The San Juan Islands- 505 AM PDT Mon May 18 2026 .TODAY...SW wind 5 to 10 kt. Waves around 2 ft or less. .TONIGHT...S wind 5 to 10 kt. Waves around 2 ft or less. .TUE...S wind around 5 kt. Waves around 2 ft or less. .TUE NIGHT...SW wind 5 to 10 kt, becoming S after midnight. Waves around 2 ft or less. .WED...NW wind around 5 kt, rising to 5 to 10 kt in the afternoon. Waves around 2 ft or less. .WED NIGHT...W wind around 5 kt, backing to S after midnight. Waves around 2 ft or less. .THU...Light and variable winds, becoming W around 5 kt in the afternoon. Waves around 2 ft or less. .THU NIGHT...SW wind around 5 kt. Waves around 2 ft or less. .FRI...W wind around 5 kt. Waves around 2 ft or less. .FRI NIGHT...SW wind around 5 kt. Waves around 2 ft or less. $$ PZZ135-190115- Puget Sound and Hood Canal- 505 AM PDT Mon May 18 2026 .TODAY...S wind around 5 kt, backing to N early this afternoon, rising to 5 to 10 kt late. Waves around 2 ft or less. .TONIGHT...N wind 5 to 10 kt, becoming S after midnight. Waves around 2 ft or less. .TUE...S wind around 5 kt. Waves around 2 ft or less. .TUE NIGHT...NW wind around 5 kt. Waves around 2 ft or less. .WED...Light and variable winds, becoming N 5 to 10 kt in the afternoon. Waves around 2 ft or less. .WED NIGHT...N wind 5 to 10 kt, easing to around 5 kt after midnight. Waves around 2 ft or less. .THU...Light and variable winds, becoming N around 5 kt in the afternoon. Waves around 2 ft or less. .THU NIGHT...N wind 5 to 10 kt, becoming NW after midnight. Waves around 2 ft or less. .FRI...SW wind around 5 kt. Waves around 2 ft or less. .FRI NIGHT...NW wind 5 to 10 kt, becoming SW after midnight. Waves around 2 ft or less. $$ PZZ110-190115- Grays Harbor Bar- 505 AM PDT Mon May 18 2026 Combined seas 4 to 6 feet, becoming 5 to 7 feet by this afternoon. Bar conditions light, becoming moderate. Maximum ebb currents will occur around 600 AM Monday, and 645 PM Monday, and 700 AM Tuesday. The Monday and Tuesday morning ebbs will be very strong. $$