Crackatoa

CBAC 2020-21 Observations

Date of Observation: 12/24/2020
Name: Zach Guy

Zone: Southeast Mountains
Location: Mount Emmons
Aspect: North, North East
Elevation: N/BTL

Avalanches: Ski triggered a few thin windslabs (5”-10” thick) breaking on the 12/22 near surface facets. Ski triggered a small persistent slab (16” thick, 12/10 interface) on a small terrain feature. Saw one fresh natural wind slab in Wolverine Cirque (D1.5)
Weather: Clear and calm
Snowpack: Widespread rolling collapses and shooting cracks while breaking trail in open terrain or aspen groves. Cracks radiated 50 to 100 feet on average, collapses were noisier than a similar location last week. Below treeline, the 12/10 interface is buried about 16″ by a F down to 4F slab.  The 12/22 near surface facets produced some minor cracking in wind sheltered terrain, buried about 3″ or 4″ deep.

 

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