Avalanche Occurrence

Two natural slab avalanches on Lasiocarpa near Coleman Pinnacle. Suspected of naturally triggering with rampid warming Wednesday morning. Wet loose in the surrounding terrain may have triggered the lower avalanche. East aspect at ~6000'.

Observer:

NWAC Forecaster

Occurrence Date:

Mar 16, 2022 10:00 am ()

Location:

Lasiocarpa Ridge

Comments:

2x very large slab avalanches ATL near Coleman Pinnacle in heavily wind loaded terrain. Crowns looked very sharp with fresh debris from a distance - more likely they occurred this morning but not conclusive. Naturally triggered with warming/wet loose from above? Suspect they released on facets above EMC but just a guess based on depth and crown shape - especially the higher avalanche with the arcing crown just below ridgeline.

Many wet loose on solar aspects starting mid-morning to D2. Reports of wet loose activity moving to shaded aspects around 1pm

# of Avys:

2

Aspect:

E (NE,SE)

Start Zone Elev:

6200ft

Size:

D2.5

Type:

SS-Soft Slab

Trigger:

N-Natural

Bed Surface:

O-Old Snow

Depth:

3.5ft