Avalanche

Avalanche: 2nd Sister

Steve WLogan
View on map

Avalanche

Slab Width
244 m
Weak Layer
Facets
Trigger Type
Natural
Vertical Fall
244 m
Avalanche Type
Hard Slab
Slab Thickness
122 cm
Start Zone Aspect
Northeast
Avalanche Problem
Persistent Weak Layer
Start Zone Elevation
2743 m

Naturally triggered D2 avalanche with sizeable crown. Did not get closer to investigate, nor did we dig a snowpit. I am guessing it failed on the buried PWL from November only because of the size of crown. Failed beneath a significant slope convexity.

Another long time observer sent in this picture taken from Cornice Ridge as the crown became visible with clearing this morning....(Wolford)