| NWS Forecast for: Coastal Waters From Cape Flattery To James Island 10 To 60 Nm (PZZ170) Issued by: National Weather Service Seattle, WA Last Update: 221 AM PDT Thu Sep 18 2025 |  |
Today: NW wind 15 to 20 kt. Seas 7 to 10 ft, subsiding to 6 to 8 ft this afternoon. Wave detail: NW 9 ft at 11 seconds and S 2 ft at 16 seconds. Tonight: NW wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Seas 5 to 7 ft. Wave detail: NW 7 ft at 10 seconds. Fri: NW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Seas 5 to 6 ft. Wave detail: W 5 ft at 9 seconds. Fri Night: NW wind 5 to 10 kt. Seas 5 to 6 ft. Wave detail: W 6 ft at 12 seconds. Sat: S wind 5 to 10 kt, rising to 15 to 20 kt in the afternoon. Seas 6 to 7 ft. Wave detail: W 7 ft at 12 seconds. A chance of rain in the morning, then rain in the afternoon. Sat Night: SW wind 15 to 20 kt, veering to W after midnight. Seas 8 to 9 ft. Wave detail: SW 9 ft at 11 seconds. Rain. Sun: W wind around 10 kt. Seas around 9 ft. Wave detail: W 9 ft at 11 seconds. A chance of rain. Sun Night: W wind 5 to 10 kt, backing to S after midnight. Seas 8 to 9 ft. Wave detail: W 9 ft at 11 seconds. A chance of rain after midnight. Mon: S wind 10 to 15 kt. Seas 7 to 8 ft. Wave detail: W 8 ft at 11 seconds. A chance of rain. Mon Night: S wind 5 to 10 kt. Seas 7 to 8 ft. Wave detail: W 8 ft at 11 seconds. A chance of rain. | |
| Zone Forecast: Coastal Waters From Cape Flattery To James Island 10 To 60 Nm (PZZ170) | |
Visit your local NWS office at: https://www.weather.gov/sew |