Puget Sound and Hood Canal Marine Forecast
| Today...Sw Wind 10 To 15 Kt, Becoming S 15 To 25 Kt Late This Morning. Waves Around 2 Ft Or Less. Rain Likely Early This Morning, Then A Chance Of Rain Late This Morning. A Slight Chance Of Rain Early This Afternoon. |
| Tonight...S Wind 15 To 20 Kt, Easing To 10 To 15 Kt After Midnight. Waves Around 2 Ft Or Less. |
| Thu...Sw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Thu Night...Nw Wind Around 5 Kt. Waves Around 2 Ft Or Less. |
| Fri...N Wind Around 5 Kt, Rising To 10 To 15 Kt In The Afternoon. Waves Around 2 Ft Or Less. |
| Fri Night...N Wind 10 To 15 Kt, Easing To 5 To 10 Kt After Midnight. Waves Around 2 Ft Or Less. |
| Sat...N Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Sat Night...N Wind 10 To 15 Kt, Easing To Around 5 Kt After Midnight. Waves Around 2 Ft Or Less. |
| Sun...Light And Variable Winds, Becoming W Around 5 Kt In The Afternoon. Waves Around 2 Ft Or Less. |
| Sun Night...Nw Wind Around 5 Kt, Backing To S After Midnight. Waves Around 2 Ft Or Less. |
| Area Forecast Discussion ...UPDATED National Weather Service Seattle WA 445am PDT Wednesday April 22 2026 Synopsis Showers will continue this morning, as well as breezy winds today as an upper level moves through to the south. Drier and warmer conditions will begin Thursday and continue through this weekend with a stronger ridge of high pressure building offshore. Short Term - Today through Friday The general forecast remains on track as rain begins to fill in across much of the western Washington interior this morning. These showers are being driven by a broad and vertically- stacked low pressure system centered over southwest Oregon and moving inland. Increasing moisture from the southeast will move up and into western Washington later this morning for increased chances of some light rain, particularly across southwestern Washington and the Cascades. Additionally, with westerly surface flow, that will help to maintain convergence across the Puget Sound, with increased chances for continued cloudiness and showers there through much of the day. Winds will likely remain elevated throughout the day with a few gusts up to 20 to 30 mph as the system moves through. With snow levels above 5000 to 6000 ft, the vast majority of precipitation will fall as rain over the mountains. Winds and rain begin to taper off overnight into early Thursday as the system departs to the east and upper level ridging develops over the northeast Pacific, putting western Washington under drier, northwesterly flow aloft. As a shortwave rides along the upper low over eastern Washington, there will still be some slight chances for showers for portions of the Cascades. However, the remainder of the area should remain mostly dry. Snow levels will lower to around 3000 to 4000 ft, so there may be some light mixed precipitation or flurries, but no significant accumulations are expected. Onshore flow will continue to prevail at the surface on Thursday with continued convergence over the Puget Sound, mostly in the way of increased clouds whereas most other places will see more sunshine Thursday. Higher confidence in more area-wide sunshine Friday as surface gradients turn offshore and a thermal trough begins to build along the coast. Winds will increase on Friday as north-south gradients temporarily increase with low pressure nudging northward from Oregon. Clearer skies and lighter winds will allow for warming daytime highs--into the mid to upper 60s by Friday--and relatively cool overnight lows--in the upper 30s to to low 40s. With the system not far away, chances will linger for some light precipitation over the Cascades. High temperatures will return to near 60 Thursday, further increasing to the mid 60s on Friday. Long Term - Friday Night Through Tuesday Models show a fairly steady weather pattern continuing into the weekend and early next week with mostly dry conditions, highs in the low to mid 60s, and lows in the 40s. Winds remain mostly light though offshore flow will continue into the weekend, keeping relative humidity dry. Deterministic models are hinting at several weak shortwaves move across the area starting early next week, but the vast majority of ensemble members are keeping the area dry, with only slight chances for showers across portions of southwest Washington and the Cascades at this time. 62 Marine Broad high pressure is remaining well offshore for an onshore flow pattern. The flow will turn more northerly over area waters Friday into Saturday with a broad surface ridge over the western Canadian provinces and lower pressure over the Pacific Northwest. Small Craft Advisories remain in effect for the Central/East Strait of Juan de Fuca, coastal waters and Puget Sound for today. Seas will build and steepen over the coastal waters today up to 11 to 15 ft, as well as nearing rough bar criteria at Grays Harbor by tonight. Seas will then gradually subside later Thursday into the weekend. 41 Hydrology No river flooding is expected in the next seven days. NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...Small Craft Advisory until 8am PDT this morning for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca. Small Craft Advisory until 8pm PDT this evening for Puget Sound and Hood Canal Small Craft Advisory from 11am this morning to 11am PDT Thursday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm. |
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