Avalanche

Timberline ski area vicinity: Salmon River canyon

Ryan MatzMt Hood
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Photo d’observation 1Photo d’observation 2Photo d’observation 3Photo d’observation 4Photo d’observation 5Photo d’observation 6Photo d’observation 7Photo d’observation 8Photo d’observation 9Photo d’observation 10Photo d’observation 11Photo d’observation 12Photo d’observation 13Photo d’observation 14Photo d’observation 15Photo d’observation 16Photo d’observation 17Photo d’observation 18Photo d’observation 19Photo d’observation 20

Quick report

Cracking
specific

Also observed a new rime/freezing mixed precipitation crust forming on snow surfaces on all aspects near and above treeline in the Timberline area. New, soft wind slabs in slightly wind sheltered lee terrain were touchy and relatively small, but actively growing. Generally 6-8” thick at 9:30 this morning. Stiffer new wind slabs also observed on lee slopes with more direct wind loading. These were stubborn, but would crack under skis if undercut by a skin track. While less likely to human trigger, they could produce a larger avalanche. New wind slabs were generally stiffer at higher elevations, 7,000’, compared the 6,000’ treeline area. All new wind slabs shared a layer of very low density snow as a weak layer at these elevations, 6,000-7,000’. This weak layer is likely the snow that fell yesterday on minimal wind.

Avalanche

Size
D1 R2
Type
SS
Aspect
E
Trigger
AS
Elevation
6500 ft

Easily triggered multiple small (D1) soft wind slab avalanches on test slopes.