Explosive-triggered avalanches at Irwin

CB Avalanche Center2014-15 Observations

Name: Zach Guy
Title: Explosive-triggered Avalanches at Irwin
Location: Kebler Pass Area
Date of Observation: 12/30/2014
Aspect: West
Elevation: 11,800 feet

Avalanches: Handshots and airblasts triggered 2 sizable persistent slabs on west aspects above treeline, failing 1.5 to 2 feet deep on facet layers near the ground (the Dec 13th interface and gouging through all old snow below it). Both slides were roughly 150 feet wide and ran 900 vertical feet, Debris piles looked to be 5 to 8 feet deep. D2 to 2.5 in size. SS-AE/AB-R2-D2/2.5-O