- Submitted by
- msulkers
- Observations date
- Thursday, January 14, 2021 at 19:20
- Location
- 50.070211° N 122.854516° W
- Reporting on
- Snow conditions
/-122.85451568103082,50.07021054329957,8,0,0/1026x200?access_token=pk.eyJ1IjoiYXZhbGFuY2hlY2FuYWRhIiwiYSI6ImNqd2dvZmUxdzE4ZWg0M2tkaXpuNG95aTQifQ.pBLM87fE3sIxRJqJT7Bf7g "Decker 9th Hole 210114")
Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Tuesday, January 12, 2021 at 16:00
- Estimated occurrence time of avalanche
- More than 48 hours ago
- Number of avalanches in this report
- 1
- The size of avalanche
- 3.5
- Slab thickness
- 300cm
- Slab width
- 300m
- Run length
- 450m
- Avalanche Character
- Cornice with slab
- Persistent slab
- Trigger type
- Natural
- Start zone aspect
- N
- Start zone elevation band
- Alpine
- Start zone elevation
- 2,400m
- Start zone incline
- 45°
- Weak layer burial date
- Wednesday, December 9, 2020
- Weak layer crystal type
- Facets
- Crust near weak layer
- Yes
- Wind exposure
- Lee slope
- Vegetation cover
- Open slope
Comments
On 210109 we observed that a portion of the summit cornice over 9th Hole had cleaved and was drooping. The following day it was in place and drooping more. Sometime about 48hrs ago, most likely during a significant temperature spike, the cornice released triggering the entire upper rim of the bowl above the rognon.
The most significant portion of the slide went through the entire 2/3 rider's right of the entire bowl to deposit metres deep against the terminal moraine.
