Avalanche

Avalanche: Grandfather Cornice

Jeremy JensenLogan
View on map

Quick report

Slope Angle
37°

Avalanche

Slab Width
61 m
Weak Layer
New Snow/Old Snow Interface
Trigger Type
Natural
Vertical Fall
152 m
Avalanche Type
Hard Slab
Slab Thickness
61 cm
Trigger Detail
Cornice Triggered
Start Zone Aspect
East
Avalanche Problem
Wind Slab
Start Zone Elevation
2835 m

Massive cornice fall propagated the 100-200 ft slab. . Hard to tell when it happened. No new fresh snow in it from yesterday.

Deposition was 10-12' deep. Very impressive piles. Huge chunks and multiple deposition piles. Slab looked to be 1-2' deep but that could be deceiving based on the amount of deposition piled up.

Last 2 photos are from cornice ridge slide. Cornice fall trigger likely similar timing. Slab looked 2-3' deep ish.