Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Andrew
Observation Date:
December 20, 2022
Submitted:
December 20, 2022
Zone or Region:
Snoqualmie Pass
Activity:
Skiing/Snowboarding
Location:
Kendall Trees

Triggered Avalanches

Did you trigger any avalanches? 
Yes
Was it intentional? 
No
Avalanche Type:
Soft Slab
Size:
Size 1: Relatively harmless to people
Elevation:
4000
Aspect:
NE
Comments:
<=D1 avalanches were both naturally occurring and easily triggered by skiers on convex rolls in the top 10cm of fresh storm snow. Remote triggers were observed while skinning.

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Soft Slab
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
4400
Aspect:
NE
Comments:
A treebomb triggered a D2 slide above a cliff. It ran off the cliff and continued below, entraining more snow and running for ~300-400ft. No skiers were caught but this can be categorized as a near miss. Incident occurred around 10:00am.

Signs of Unstable Snow

None reported

Observations

Widespread instability in the top 10cm of storm snow throughout the Kendall zone between 8:00-10:30AM. Natural and skier triggered avalanches were observed.

Media

This was triggered remotely while breaking trail and is indicative of the reactivity found throughout the zone.
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