Date of Observation: 12/20/2015
Name: Ian Havlick
Aspect: North East, East, South East, South
Avalanches: Popped a decent storm slab out on a steeper roll on NE facing avalanche path BTL. Slab was probably 60cm, and had some push to it., collapsing and propagating probably 20ft. Did not feel comfortable on steep terrain today, however, did ski small steep features nervously.
Weather: Cold air advection and orographics was surprisingly heavy and last throughout tour, showery in nature ranging from S-1 to S5. Around 6″ new in Brush overnight and today. When we gained more near treeline ridgeline, W-NW wind was a steady 15mph with a few gusts to 30. No real Solar effect on any terrain today.
Snowpack: Snowpack was surprisingly deep, but expectations may have just been that low… HS ranged 40cm to 120cm depending on wind effect and elevation. 3-5mm depth hoar first 10cm, smaller facets, with about 15-50cm new snow which was becoming slabby , especially below treeline where new snow is cohesive enough hold slab above super weak, larger grained facets. Extended column tests showed no slab firm enough for ECT to show, but was getting localized collapses around skis all day. one ECT near ridgeline after finding old hardslab. ECTPV and ECTPE SC below hardslab. Windloading confined to ridgelines where we travelled. No wind effect BTL, aside from open meadows.
skier triggered BTL pocket on steep roll. Lots of hangfire 2nd skier avoided by skiing bed surface