Cornice detachment on Sibbald

Map for Mountain Information Network report: Cornice detachment on Sibbald

Information

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
200cm
Slab width
25m
Avalanche Character
  • Cornice only
Trigger type
Natural
Start zone aspect
  • NE
Start zone elevation band
  • Alpine
Start zone elevation
2,550m
Start zone incline
35°
Weak layer crystal type
  • Facets
Crust near weak layer
Yes
Wind exposure
Lee slope

Comments

We witnessed many recent cornice drops on our way to the summit of Sibbald, including one very large cornice detachment on the NW ridge. Lots of faceted snow at ridge top and large cornices on lee features that seem to be rotting with the persistent cold temps.

Lots of snow on the glaciers for anyone traversing through, 3-4m+ on Sibbald and Battlement.