- Submitted by
- gsxracing
- Observations date
- Wednesday, February 3, 2021 at 19:52
- Location
- 49.376044° N 114.918051° W
- Reporting on
- Snow conditions
%2F-114.91805145162962%2C49.37604408755786%2C8%2C0%2C0%2F1026x200%3Faccess_token%3Dpk.eyJ1IjoiYXZhbGFuY2hlY2FuYWRhIiwiYSI6ImNqd2dvZmUxdzE4ZWg0M2tkaXpuNG95aTQifQ.pBLM87fE3sIxRJqJT7Bf7g&w=1200&q=75 "Fernie Factor")
Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Wednesday, February 3, 2021 at 14:00
- Estimated occurrence time of avalanche
- From 12 to 24 hours ago
- Number of avalanches in this report
- 1
- The size of avalanche
- 2
- Slab thickness
- 25cm
- Slab width
- 3m
- Run length
- 2m
- Avalanche Character
- Persistent slab
- Trigger type
- Snowmobile
- Trigger subtype
- Accidental
- Start zone aspect
- S
- SW
- Start zone elevation band
- Treeline
- Start zone incline
- 60°
- Weak layer crystal type
- Depth hoar
- Crust near weak layer
- Yes
- Vegetation cover
- Sparse trees or gladed slope
Comments
We were in a drainage and came across a previously triggered slab avalanche that had been triggered by a sled earlier in the day. Tracks I dictated that a snow machine had climbed the side of the drainage and likely broke the slab without even knowing.
Although the amount of snow that had slid was size 1, it had potential to propagate more, cause a larger amount of snow to come down, and end up in the drainage (big terrain trap)