Avalanche: Porter Fork

Observer Name
Greg S
Observation Date
Saturday, January 20, 2018
Occurrence Date
Saturday, January 20, 2018
Occurence Time
1:30pm

Region:

Location Name or Route
Porter Fork Ice Box
Elevation
9500
Aspect
North
Slope Angle
33
Trigger
Skier
Trigger: additional info
Intentionally Triggered
Avalanche Type
Hard Slab
Avalanche Problem
Persistent Slab
Weak Layer
New Snow/Old Snow Interface
Depth
3'
Width
150
Vertical
800
Comments
Party of 3 skied a NE facing line ~33ยบ W of Porter fork pass (Sox's) without incident. On the second lap we traveled further to "The Ice Box". First skier traveled ~2 ft N over the ridge and bounce tested the slope while holding on to a tree. On the third bounce, the slope cut loose. The crown was approximately 150ft wide and up to 3.5 ft at its deepest points. The avalanche was found to have run ~800 yards. Upon arriving at the debris field the party switched their transceivers to search and fanned out across the debris. No signals were found and the party exited the canyon.
Comments

Forecaster Note:  Party reported hearing a collapse while traveling the ridgeline. Important to note that the party cleared the debris with a transceiver search (this is increasingly critical to do) and also called Alta Central to report the avalanche (though probably more important if adjacent to a ski area).  

Coordinates