Avalanche: Lineer Ridge 3/1/2011

Observer Name: 
Matt Selman/Matt Cline
Observation Date: 
03/03/2011
Occurrence Date: 
03/01/2011
Occurrence Time: 
Unknown
Region: 
Skyline
Lineer Ridge
Location Name: 
Lineer Ridge, North Face
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Location

39° 37' 52.9464" N, 111° 19' 49.5408" W
Avalanche Characteristics
Elevation: 
9700'
and below
Aspect: 
North
Slope Angle: 
38
Trigger: 
Natural
Avalanche Type: 
Cornice Fall
Depth (avg): 
20"
Width: 
Unknown
Vertical: 
Unknown
General Comments

The photo below is one of many big cornice falls all over the high ridges of the Skyline over the weekend. We photographed this one and probably could have photographed 10-15 more while we were out. There were a even snowmobilers' highmarks directly under mammoth cornices on severely wind-loaded slopes but we didn't see anything that had cut loose. They got lucky I guess. We also noted what looked to be a large but relatively shallow slab crown on the steep east face of one of the peaks at the head of Rolfson Canyon, but the evening sun shadowed the face and made observation and photography difficult. Mixed messages from the Skyline then--a large natural slide on a steep east-facing slope WITHOUT any apparent cornice break, and several large cornice breaks that didn't seem to produce any slab activity on similar slopes and aspects. Tricky.

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