Small Slab Avalanches

Map for Mountain Information Network report: Small Slab Avalanches

Information

Avalanche date/time
Tuesday, December 22, 2020 at 09:39
Estimated occurrence time of avalanche
From 24 to 48 hours ago
Number of avalanches in this report
2 to 5
The size of avalanche
2
Slab thickness
10cm
Slab width
100m
Run length
50m
Avalanche Character
  • Wind slab
Trigger type
Natural
Trigger subtype
Accidental
Start zone aspect
  • NW
Start zone elevation band
  • Treeline
Start zone elevation
1,600m
Start zone incline
30°
Runout zone elevation
1,550m
Crust near weak layer
Yes
Wind exposure
Windward slope

Comments

North side of crown mountain slid, most of the bowl came down. Looks to be caused by snow falling off trees from the wind, started on the steep section and slid down to the summer route crossing to Elfin Lakes hut.