"A wet midweek Cascade cycle is the highest-confidence part of this forecast, followed by a lower-confidence but colder storm signal late in the period. Snow and rain increase Tuesday, peak Tuesday night through Thursday, and taper Friday morning, with the most reliable accumulations at higher elevations."
"Snow levels while it is snowing are expected near 5,000 to 6,000 feet early Tuesday, then trend down to roughly 3,000 to 4,000 feet by late Wednesday into Thursday, which favors upper-mountain terrain first and brings better odds for pass-level accumulation later."
"During the main storm, snow-to-liquid ratios are mostly in the 7-10 range, so expect dense snow at first, with periodic 10-13 ratios in colder pockets late Wednesday night and Thursday. Exposed terrain should also see meaningful wind, with many ridgelines running 25-40 mph and occasional gusts in the 35-50 mph range."
A significant midweek storm system affects the Cascades with high confidence, bringing precipitation starting Tuesday and peaking Tuesday night through Thursday before tapering Friday morning. Snow levels begin near 5,000-6,000 feet Tuesday, descending to 3,000-4,000 feet by late Wednesday-Thursday, favoring upper-mountain terrain initially then improving pass-level accumulation. Snow-to-liquid ratios range from 7-10 during the main storm, producing dense snow quality that gradually improves as colder air arrives. Wind exposure on ridgelines reaches 25-40 mph with gusts to 35-50 mph. Regional guidance converges on Wednesday through early Friday as the primary accumulation window, with strongest totals expected around Timberline and Mt. Baker, moderate refreshes at Stevens Pass and Whistler, and lighter early outcomes at Snoqualmie Pass and Crystal Mountain.
Read at SnowBrains
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