A cool, showery spring pattern brings mountain snow through early Sunday, with the strongest totals at Timberline and Mt. Baker. Confidence is highest from Wednesday afternoon through early Sunday as repeated weak systems align, lowering snow levels and producing modest upper-elevation snowfall. Wednesday and Thursday feature a continuation of an ongoing shower cycle over the Oregon Cascades, with snow mostly confined to upper elevations and snow-to-liquid ratios around 4 to 8 during the wettest hours, supporting dense to very dense spring snow. Winds near Mt. Hood can reach 50–60 mph, roughening surfaces. Late Friday into Saturday brings a colder shortwave, dropping snow levels to about 3,500–4,500 feet and improving SLRs to 8–11, with Timberline stacking the most total. Sunday through Tuesday turns drier and milder as ridging builds.
"Confidence is strongest from Wednesday afternoon, May 13, through early Sunday, May 17, when individual model guidance lines up on repeated weak systems, lowering snow levels, and modest upper-elevation snowfall. Timberline has the strongest open lift-served signal with 6-9 in, while Mt. Baker is closed but still stands out for mountain snowfall with 5-8 in."
"The ongoing shower cycle over the Oregon Cascades continues Wednesday afternoon before fading Wednesday night into Thursday. Historical context at Timberline and Mt. Bachelor shows this first round already in progress, so the near-term pattern is a continuation rather than a fresh start. Individual model guidance converges on weakening precipitation and relatively high snow levels Wednesday and Thursday, with snow mostly confined to upper elevations and SLRs around 4 to 8 during the wettest hours, which means dense to very dense spring snow."
"The main refresh arrives late Friday into Saturday as a colder shortwave crosses the Cascades. Individual models converge on the Friday night to Saturday timing and on snow levels dropping near 3,500 feet to 4,500 feet, but they still diverge on shower intensity, especially from central Washington southward. The best open-resort skiing signal is at Timberline, where the colder Saturday phase should stack most of the total, while Whistler and Crystal Mountain look lighter."
"SLRs improve into the 8 to 11 range during the colder showers, so snow quality trends from dense toward moderate, but this is still a spring refresh rather than a deep powder cycle. Sunday through Tuesday turns drier and milder as ridging builds over the northea"
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