Observation: Public
Observation Details
Name:
Alex BlanckObservation Date:
November 23, 2022Submitted:
November 23, 2022Zone or Region:
Snoqualmie PassActivity:
Skiing/SnowboardingLocation:
AlpentalSigns of Unstable Snow
Did you see shooting cracks?
Yes, IsolatedDid you experience collapsing or whumpfing?
Yes, IsolatedObservations
Our group toured up Alpental to near top of Lower International.
Observed whumpfing, isolated collapsing, and isolated cracks while skinning from 3,500’ to 4,000’.
Chose to dig a profile on ESE 40 degree slope at 4,000’.
Profile Notes:
- 63 cm snow depth
- top 2cm: pencil probe
- 2-16cm: 1 finger probe
- 16-19cm: 3cm rain crust
- 19cm-base: 1 finger probe
Column test failed during isolation above the rain crust at 16 cm depth. Fracture character undetermined.
We isolated a second column which failed both above and below the same rain crust with light tap to the back of the column.
Media
