Observer Name
NH-S, ES, EH
Observation Date
Saturday, December 18, 2021
Avalanche Date
Friday, December 17, 2021
Region
Logan » Logan River » Central Bear River Range
Location Name or Route
8800' NE 33-degree slope
Elevation
8,800'
Aspect
Northeast
Trigger
Skier
Depth
20"
Width
50'
Vertical
Unknown
Comments
Skier triggered hard slab visible from across valley. Appeared to have failed on facets that preceded December storms. HS-AS-R1-D2
Abundant collapses that propagated across meadows and low-angle slopes all day. The facets are well developed and provide sufficient red flags in collapsing, cracking, and easily identifiable poor structure.
Photo of crack propagation following a collapse on a <30 degree slope close to the observed avalanche.
