Cape Flattery to Cape Shoalwater WA between 150 and 250 NM Offshore Forecast
| Tonight...Nw Winds 25 To 30 Kt. Seas 11 To 14 Ft. |
| Sun...Nw Winds 20 To 25 Kt. Seas 11 To 12 Ft. Scattered Showers. |
| Sun Night...N Winds 20 To 30 Kt. Seas 8 To 13 Ft. |
| Mon...N Winds 15 To 25 Kt. Seas 7 To 12 Ft. |
| Mon Night...N Winds 10 To 20 Kt. Seas 6 To 9 Ft. |
| Tue...N Winds 10 To 20 Kt, Becoming 10 To 15 Kt. Seas 5 To 8 Ft. |
| Tue Night...N Winds 10 To 20 Kt. Seas 5 To 7 Ft. |
| Wed...N Winds 15 To 20 Kt, Becoming Nw 10 To 20 Kt. Seas 6 To 7 Ft. |
| Wed Night...Nw Winds 10 To 20 Kt, Becoming 10 To 15 Kt. Seas 6 To 8 Ft. |
| Thu...W Winds 10 To 15 Kt, Becoming 10 To 20 Kt. Seas 6 To 8 Ft. |
| Thu Night...Nw Winds 15 To 20 Kt. Seas 6 To 10 Ft. |
| Area Forecast Discussion National Weather Service Seattle WA 230pm PDT Sat Oct 11 2025 Synopsis Cool and unsettled conditions continue across Western Washington this weekend. A system moving southward from British Columbia Sunday will bring the first noteworthy high elevation snow of the season. Drier conditions will return early next week with offshore flow. Typical autumnal conditions return later next week. Short Term - Tonight Through Tuesday An upper level trough is passing east through the region today with showers and cooler conditions across the westside. Temperatures are in the low to mid 50s which is around 5 to 10 degrees cooler than average. Showers will mainly impact the interior and Cascades this afternoon and evening then taper down overnight. Expect overnight lows in the 40s. A second, cooler, system will drop down from B.C. on Sunday for more showers and also mountain snow. The highest snow totals will be in the Cascades and above 4,000 ft where 4 to 10 inches of snow will fall through early Monday morning. Higher totals are possible at Mount Baker and Paradise on Mount Rainier. This will be the first notable snowfall in the mountains this season - hikers and travelers should expect wintry conditions. Drier weather is slated for Monday and Tuesday as the upper low digs farther south toward central CA. Across western WA, the flow will turn offshore and we could see breezy winds in the north interior with Fraser River outflow. The air mass will be dry and cool Tuesday morning with temperatures in the mid to upper 30s (frost potential). Expect highs around 60 with mostly clear skies. 33 Long Term - Wednesday Through Saturday Onshore flow resumes on Wednesday as the upper low moves inland and over the Intermountain West. Weak high pressure follows on Thursday but some light warm frontal precipitation may clip the area for a chance of rain. Rain chances increase Thursday night and Friday as a weak frontal system moves inland. Wet weather continues over the weekend as a stronger system moves in. 33 Marine Increased onshore flow will continue into tonight. A low pressure system will develop along the southern coast of Vancouver Island late Sunday and move southwards along the Coastal Waters Monday. Gale Warnings continue for the central and northern outer Coastal Waters due to increased northwest winds through Sunday morning. Small Craft Advisory winds exist elsewhere for the Coastal Waters. Have issued a Small Craft Advisory for the central and eastern Strait of Juan de Fuca this evening with increased westerly winds. Probabilities of wind gusts of 25 kt peak between 40 to 60 percent, with higher likelihood of gusts exceeding SCA (Small Craft Advisory) threshold for the Strait this evening. Winds will then transition more northeast Sunday night as the aforementioned weather system slides southwards along the coast. A Gale Watch has been issued for the northern inland waters Sunday night through Monday night for these northeast winds. SCA (Small Craft Advisory) winds are also likely over portions of the Strait of Juan de Fuca and the Coastal Waters. Furthermore, brief SCA (Small Craft Advisory) wind gusts will need to be monitored for Puget Sound on Monday. Winds will then ease Monday night into Tuesday as high pressure builds back into Western Washington. Seas will build to 11 to 15 ft tonight. Seas will be steep with a dominant period of 10 seconds. Seas will gradually subside on Sunday. Seas will fall to 5 to 8 feet by late Monday. JD NOAA Seattle WA Office: Watches - Warnings - Advisories WA...Winter Weather Advisory from 5am Sunday to 5am PDT Monday for Cascades of Snohomish and Northern King Counties-Cascades of Whatcom and Skagit Counties. Winter Weather Advisory from 8am Sunday to 11am PDT Monday for Cascades of Pierce and Lewis Counties. PZ...Small Craft Advisory from 8pm this evening to 5pm PDT Sunday for Grays Harbor Bar Small Craft Advisory until midnight PDT tonight for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca. Gale Watch from Sunday evening through late Monday night for Northern Inland Waters Including The San Juan Islands. Small Craft Advisory until 5pm PDT Sunday for Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm. Gale Warning until 8am PDT Sunday 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. Small Craft Advisory from 8am to 8pm PDT Sunday 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. Small Craft Advisory until 8pm PDT Sunday for Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm. |
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