Avalanche Occurrence

View Associated Field Report

This persistent slab avalanche was observed above Corral Creek, near Johnstone Peak. It failed on a N/NW facing slope at 8,600'. Based on the appearance of the crown it failed on layer of weak snow (persistent slab). The terrain and trees below the crown limited its size, but the crown is over 500' wide.

Observer:

SAC Forecaster

Verified by SAC?

Yes

Occurrence Date:

Dec 29, 2021 (+/- 3 days)

Location:

Morgan Ridge

# of Avys:

1

Aspect:

N (N,NW)

Start Zone Elev:

8600ft

Size:

D1.5

Type:

SS-Soft Slab

Trigger:

N-Natural

Weak Layer:

Dec 11, 2021 (FC)

Comments:

This would have made an easy D2 in the right terrain. Despite short path length this crown was 500'+ wide

This persistent slab avalanche was observed above Corral Creek, near Johnstone Peak. It failed on a N/NW facing slope at 8,600'. Based on the appearance of the crown it failed on layer of weak snow (persistent slab). The terrain and trees below the crown limited its size, but the crown is over 500' wide.