Valanga

Avalanche: Philadelphia Flats

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Quick report

Slope Angle
38°

Avalanche

Slab Width
30 m
Weak Layer
Facets
Trigger Type
Snowmobiler
Vertical Fall
30 m
Avalanche Type
Soft Slab
Slab Thickness
61 cm
Start Zone Aspect
Northeast
Avalanche Problem
Persistent Weak Layer
Start Zone Elevation
3078 m

Judging from fresh snowmobile tracks, it appears one rider climbed the slope successfully. A second rider most likley was climbing the slope when he triggered the avalanche when he was near the top. It most likley broke under or behind him and he was able to finish the climbe without getting caught.