Central U.S. Waters Strait of Juan de Fuca Marine Forecast
| Tonight...W Wind 15 To 25 Kt, Easing To 10 To 20 Kt Late. Waves 3 To 5 Ft. |
| Tue...W Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. Waves Around 3 Ft. |
| Tue Night...W Wind 20 To 25 Kt, Easing To 15 To 20 Kt After Midnight. Waves 4 To 6 Ft. |
| Wed...W Wind 10 To 15 Kt, Becoming 20 To 25 Kt In The Afternoon. Waves 3 To 4 Ft. |
| Wed Night...W Wind 20 To 25 Kt, Easing To 15 To 20 Kt After Midnight. Waves 4 To 6 Ft. |
| Thu...Sw Wind 5 To 10 Kt, Veering To W In The Afternoon. Waves Around 2 Ft Or Less. A Chance Of Rain In The Afternoon. |
| Thu Night...W Wind 10 To 15 Kt, Becoming Sw 5 To 10 Kt After Midnight. Waves Around 3 Ft In The Evening, Then Around 2 Ft Or Less. A Chance Of Rain In The Evening. |
| Fri...Se Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. A Chance Of Rain. |
| Fri Night...W Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. A Chance Of Rain. |
| Sat...W Wind 5 To 10 Kt, Rising To 10 To 15 Kt In The Afternoon. Waves Around 2 Ft Or Less, Then Around 3 Ft In The Afternoon. A Chance Of Rain. |
| Sat Night...W Wind 15 To 20 Kt. Waves 3 To 4 Ft. |
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Area Forecast Discussion National Weather Service Seattle WA 821pm PDT Monday May 12 2025 Synopsis Showers will mostly taper tonight as an upper level low continues to progress inland across the Pacific Northwest. Upper level ridging will start to build into the area midweek for the return of drier conditions. A broad upper level trough will bring showery weather back to our area into the end of the week. Short Term - Tonight Through Thursday An upper level low that moved inland over Oregon earlier today will continue to progress south and eastward across the Pacific Northwest into Tuesday. Radar shows that shower activity across western Washington has largely tapered this evening, though some light showers will still remain possible across higher terrain at times overnight into Tuesday. The thunderstorm threat also continues to wane significantly this evening, especially with the approach of sunset. The forecast remains largely on track, so the previous discussion follows below. Updates have been made to the aviation section. 14 As the aforementioned upper level low moves southeastward, the area will begin to dry out into Tuesday with a weak upper level ridge attempting to build into the area. Conditions look mostly dry Tuesday into Wednesday, with a chance of showers largely in the higher terrain in the Cascades and Olympics. High temperatures will remain in the lower to mid 60s for the interior, with mid to upper 50s for the coast and water adjacent locations. Broad troughing looks to shift into our area Thursday and bring in a more showery weather pattern into the long term period. Long Term - Friday Through Monday Ensembles are generally in consensus with upper level troughing returning to western Washington for the weekend. Quantitative Precipitation Forecast values look rather light, but generally looking at a more unsettled showery weather pattern into the early half of next week. Temperatures remain largely unchanged during this time, staying in the low to mid 60s. Mazurkiewicz Marine High pressure will build over the coastal waters tonight with lower pressure inland. This pattern will remain intact through Wednesday night. Frontal system moving through the waters later Thursday into Thursday night. High pressure will build over the coastal waters for the weekend. Small Craft Advisory westerly winds in the Central and Eastern Strait of Juan de Fuca tonight and again Tuesday night. Small craft advisory westerlies are possible Wednesday night. Northwest winds 15 to 25 mph with seas 10 to 12 feet over the outer Coastal Waters Tuesday. Both the winds and seas will Hydrology The daily hydrology discussion has ended until the start of the next rainy season; it will only be included as needed. NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...Small Craft Advisory until 5am PDT Tuesday for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca. Small Craft Advisory until 5am PDT Wednesday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm. |
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