Avalanche Forecast
Issued: Nov 24th, 2012 9:49AM
The alpine rating is Storm Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Poor - Due to limited field observations for the entire period
Weather Forecast
Sunday: A few clouds with the possibility of light flurries / Light to moderate northwest winds / Freezing level at 800mMonday: Mainly sunny / Light to moderate northwest winds / Freezing level at 900mTuesday: Mainly sunny / Light to moderate northwest winds / Freezing level at 1200m
Avalanche Summary
Just before the weekend we received a report from the Valemount area of a snowmobile triggering a size 2.0 avalanche that was about 70 cm deep and about 80 metres wide. The avalanche was triggered from a shallow weak area, and suspect that the weak layer was either the November crust or buried surface hoar. Please send us an email if you have any observations.
Snowpack Summary
Snow accumulations from Friday were highly variable in the region with some areas receiving over 30cms over the 24hr period. Although alpine wind data has been sparse, velocities in neighboring regions have been in the upper end of moderate. That said, I'd be highly curious about the possibility of windslabs in exposed areas. The recent snowfall adds to the healthy amounts that have fallen over the past few days. There may be a thin buried surface hoar layer down about 85 cm in the alpine. As well, the November rain crust now exists over 100cm down in some locations and may exist in combination with facets. Buried persistent weak layers may become reactive with the recent storm loading.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 25th, 2012 2:00PM