Observer Name
brandondodge
Observation Date
Friday, December 14, 2012
Avalanche Date
Friday, December 14, 2012
Region
Salt Lake » Big Cottonwood Canyon » Brighton » Millicent Peak
Location Name or Route
Milly Bowl apron closed area inside Brighton Resort
Elevation
10,300'
Aspect
Northeast
Slope Angle
40°
Trigger
Explosive
Trigger: additional info
Intentionally Triggered
Avalanche Type
Hard Slab
Avalanche Problem
Persistent Weak Layer
Weak Layer
Surface Hoar
Depth
4'
Width
300'
Vertical
900'
Snow Profile Comments
Triggered by Gaz-ex. First mission of the year. Started as new snow slide from last couple stroms/wind events. Cascaded over cliffs triggering hard slab on the apron. I believe it started on the surface hoar weakness identified while ioslating column in crown face and stepped down 4-5 inches running full path and track on rain crust above grauple. Step down apparent on crown face and in places on bed surface.
Comments
Surface hoar presented as 2mm plates laid over and sparkling (in photo #2) Q1 shear while cutting out wedge on the side to isolate column
Coordinates