- Submitted by
- Aaron Harris
- Observations date
- Friday, March 17, 2023 at 20:30
- Location
- 49.536890° N 117.656910° W
- Reporting on
- Snow conditions
/-117.65691,49.53689,8,0,0/1026x200?access_token=pk.eyJ1IjoiYXZhbGFuY2hlY2FuYWRhIiwiYSI6ImNqd2dvZmUxdzE4ZWg0M2tkaXpuNG95aTQifQ.pBLM87fE3sIxRJqJT7Bf7g "Norns")
Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Friday, March 17, 2023 at 20:30
- Estimated occurrence time of avalanche
- Less than 12 hours ago
- Number of avalanches in this report
- 1
- The size of avalanche
- 2.5
- Slab width
- 80m
- Run length
- 500m
- Avalanche Character
- Deep persistent slab
- Wind slab
- Trigger type
- Skier
- Trigger subtype
- Accidental
- Start zone aspect
- N
- Start zone elevation band
- Alpine
- Start zone elevation
- 2,400m
- Start zone incline
- 35°
- Runout zone elevation
- 2,150m
- Weak layer burial date
- Sunday, March 12, 2023
- Weak layer crystal type
- Surface hoar
- Crust near weak layer
- No
- Wind exposure
- Lee slope
- Vegetation cover
- Open slope
Comments
Three skiers up tracking of broad ridge line, third skier felt whumph and saw shooting cracks in all directions. Avalanche propagated along broad ridge line, taking out mature trees and scrubbing down to November facets. Left side of avalanche flowed down gully feature and triggered a 2m -20m deep slab on November facets. No involvement.
