Route & General Observations
When we started from the top of Manitoba, one skier skied a little bit on the left and triggered the’ summit lens’ in the lowest right part.
All the upper part SW face collapsed.
the height of the slab was in the middle of the lens 2 feet, 30 inch in the borders where it has been triggered.
No one have been injuried.
Snowpack is very active above treeline where the activity of wind have been stornger
|Trigger||Skier||Avalanche Type||Hard Slab||Aspect||South Southwest|
|Elevation||3700ft||Slope Angle||30deg||Crown Depth||24in|
Hard slab located 2 feet deep in the snow. Upper part heavy snow and compressed by the wind action. 150feet wide and 1000feet the lenght of fall
Obvious signs of instability
|Recent Avalanches?||Yes||Collapsing (Whumphing)?||Yes||Cracking (Shooting cracks)?||No|
20 inch of fresh snow, light breeze on top, 32°
20'' Of fresh snow, wet in the lower part of manitoba
No test, no ect,