Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Charlotte & Carl
Observation Date:
November 25, 2020
Submitted:
November 25, 2020
Zone or Region:
Snoqualmie Pass
Activity:
Skiing/Snowboarding
Location:
Alpental Ski Area

Triggered Avalanches

Did you trigger any avalanches? 
Yes
Was it intentional? 
No
Avalanche Type:
Hard Slab
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
4900
Aspect:
W
Comments:
We remote triggered a wind slab on Roll In cliffs that propagated the full width of the chute and around the corner (approximately. 100ft) while skinning up - size 1.5R4 and knocked one person off his feet. The crown was around 16in and we think slid on the interface from the most recent storm.
Photo:

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Size:
Elevation:
Aspect:
Comments:

Signs of Unstable Snow

Did you see shooting cracks? 
Yes, Widespread
Did you experience collapsing or whumpfing? 
No

Observations

We noted shooting cracks and things moving on test slopes on the way up. Skiing down we popped some small slabs on convex rolls.

Media

WordPress Lightbox