- Submitted by
- alexanderdrinkard
- Observations date
- Sunday, February 16, 2020 at 18:00
- Location
- 49.510904° N 117.822830° W
- Reporting on
- Snow conditions
%2F-117.8228299149649%2C49.51090406176442%2C8%2C0%2C0%2F1026x200%3Faccess_token%3Dpk.eyJ1IjoiYXZhbGFuY2hlY2FuYWRhIiwiYSI6ImNqd2dvZmUxdzE4ZWg0M2tkaXpuNG95aTQifQ.pBLM87fE3sIxRJqJT7Bf7g&w=1200&q=75 "Norns")
Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Sunday, February 16, 2020 at 12:00
- Estimated occurrence time of avalanche
- From 12 to 24 hours ago
- Number of avalanches in this report
- 2 to 5
- The size of avalanche
- 1
- Slab thickness
- 20cm
- Slab width
- 20m
- Run length
- 50m
- Avalanche Character
- Storm slab
- Trigger type
- Skier
- Trigger subtype
- Accidental
- Start zone aspect
- NE
- Start zone elevation band
- Treeline
- Start zone elevation
- 2,200m
- Start zone incline
- 37°
- Weak layer crystal type
- Storm snow
- Crust near weak layer
- Yes
- Wind exposure
- Lee slope
- Vegetation cover
- Open slope
Comments
Multiple snowboarder triggered small storm slab avalanches that broke on the 2/12 sun crust. Storm slab depth varied from 20-30 cm. Extended column tests propagated with fracture characters of sudden planar. ECT12-18 SC
NE and E aspects at 2000-2200m.