Central U.S. Waters Strait of Juan de Fuca Marine Forecast
| Today...Se Wind Around 5 Kt, Veering To Sw This Afternoon. Waves Around 2 Ft Or Less. A Chance Of Rain. |
| Tonight...Sw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. A Chance Of Rain In The Evening. |
| Sat...Se Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. A Chance Of Rain In The Afternoon. |
| Sat Night...Se Wind 5 To 10 Kt, Becoming S 15 To 20 Kt After Midnight. Waves Around 2 Ft Or Less. Rain. |
| Sun...S Wind 15 To 20 Kt, Becoming Se 10 To 15 Kt In The Afternoon. Waves Around 2 Ft Or Less. Rain. |
| Sun Night...Se Wind 10 To 15 Kt, Rising To 25 To 30 Kt With Gusts Up To 40 Kt After Midnight. Waves Around 2 Ft Or Less, Then 3 To 4 Ft After Midnight. Rain. |
| Mon...S Wind 25 To 30 Kt, Veering To Sw 25 To 35 Kt In The Afternoon. Waves 3 To 5 Ft. Rain. |
| Mon Night...W Wind 25 To 30 Kt, Backing To Sw 20 To 25 Kt After Midnight. Waves 5 To 7 Ft, Subsiding To 3 To 5 Ft After Midnight. Rain. |
| Tue...S Wind 20 To 25 Kt, Rising To 25 To 30 Kt In The Afternoon. Waves 3 To 5 Ft. Rain. |
| Tue Night...Sw Wind 25 To 35 Kt. Waves 5 To 7 Ft, Building To 6 To 9 Ft After Midnight. Rain. |
| Area Forecast Discussion National Weather Service Seattle WA 307am PST Fri Dec 12 2025 Synopsis Lingering light precipitation will lift north of the area through the day. Elevated river runoff conditions will continue with significant river flooding impacts for many areas. Saturday will see needed drier weather ahead of a weak frontal system Saturday night into Sunday. A stronger system will follow Monday into Tuesday with heavier precipitation and potentially windy conditions for some areas. Short Term - Today through Sunday Areas of light rain mainly over the Cascades and northern Olympic Peninsula lingering this morning. Light rain will shift north into British Columbia as upper level ridging begins to move onshore late in the afternoon and evening. The upper level ridge will give the area a need break in precipitation during the day Saturday. A weak frontal system will bring precipitation back to the area Saturday night into Sunday with a 30-50% chance of 1 to 2 inches of precipitation falling over the Olympics and northern Cascades through Sunday evening. Snow levels are expected to be above 5500 feet through this period and given the antecedent hydrologic conditions throughout the area has the potential to result in impacts to area rivers. Long Term - Sunday Night Through Thursday Ensembles continue to consistently bring a stronger system back into western Washington quite literally on the heels of the late weekend system. This would return widespread, heavier rainfall to the area as well as windy to gusty conditions for parts of western Washington. Interestingly, long range ensemble clustering does indicate several scenarios associated with differences in the upper level pattern, however each of these patterns result in similar precipitation forecasts over much of the Pacific Northwest - including western Washington. Snow level forecasts remain high - 7,000 to 8,000 feet - for much of Monday, so that the initial push with this system would fall as rain over most of the higher terrain. The National Blend of models is currently showing a 30-60% chance of 3 to 4 inches of precipitation over the Olympic and the Whatcom, Skagit and Snohomish Cascades through Monday evening. If this occurs it would contribute to renewed or prolonged flooding impact to many area rivers. Similarly the NBM showing 80-90% probabilities of wind gusts greater than 45 mph along the coast, and 60-80% odds over the area of Admiralty Inlet to western Whatcom County. The persistent large scale pattern of broad troughing over the northern Pacific through increases the likelihood of active if not impactful weather through much of the remainder of the week. This could include periods of widespread rain, high- elevation snow and even winds. Marine A weak surface ridge will remain over the coastal and interior waters today. The first of a series of fronts will approach the coastal waters late Saturday. A series of vigorous frontal systems will impact area waters early next week with headlines for both winds and hazardous seas. Seas will climb back into double digits Sunday night into Monday and remain hazardous for the foreseeable future. 27 Hydrology Many rivers continue to run at significant or near record levels, especially over the western Cascades. Those rivers that are slower to respond, including the Nooksack, Skagit, and Snohomish, will take a few more days to fully crest and lower below flood stage. * Numerous River Flood Warnings remain in effect across western Washington, with varying times and flood levels. * A Flash Flood Watch remains in effect for a potential levee failure of the Skagit River below Sedro-Wooley to the mouth of the Skagit River through late Friday. * A Flood Watch remains in effect through Friday across all of western Washington. With very wet antecedent soil conditions, the landslide threat across the region has increased with this system, and several landslides and mudslides have already occurred in steep terrain across western Washington. Potential has also increased for debris flows over area burn scars, which continue to be monitored. While the threat of urban flooding has decreased, the threat of small stream flooding, as well as for areas with poor drainage, continues to pose a risk of localized nuisance flooding and ponding on roadways. Low water crossings may become impacted or impassable. The latest river observations and forecasts can be found at water.noaa.gov. 33/15 NOAA Seattle WA Office: Watches - Warnings - Advisories WA...Flood Watch through this afternoon for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and Northern King Counties-Cascades of Southern King County-Cascades of Whatcom and Skagit Counties-City of Seattle-Downtown Everett / Marysville Area-Eastern Kitsap County-Eastern Strait of Juan de Fuca-Eastside-Foothills and Valleys of Central King County-Foothills and Valleys of Pierce and Southern King Counties-Foothills and Valleys of Snohomish and Northern King Counties-Foothills and Valleys of Thurston and Lewis Counties-Foothills and Valleys of the North Cascades-Foothills of the Western and Southern Olympic Peninsula-Grays Harbor County Coast-Island County- Lake Crescent Area Including US 101-Lower Chehalis River Valley-Lowlands of Lewis and Southern Thurston Counties- Lowlands of Pierce and Southern King Counties-Lowlands of Western Skagit and Northwestern Snohomish Counties- Lowlands of Western Whatcom County-Middle Chehalis River Valley-Northern Hood Canal-Northern Washington Coast- Olympia and Southern Puget Sound-Olympics-Port Townsend Area-San Juan County-Shoreline / Lynnwood / South Everett Area-Southern Hood Canal-Western Strait of Juan de Fuca- Willapa and Black Hills. Flash Flood Watch through late tonight for Lowlands of Western Skagit and Northwestern Snohomish Counties. PZ...Small Craft Advisory until 4am PST early this morning 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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