Avalanche Forecast
Issued: Feb 10th, 2012 9:32AM
The alpine rating is Cornices.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Good - -1
Weather Forecast
A firmly embedded ridge of high pressure over Alberta seems to be causing systems to fizzle once they reach the Columbia Mountains. Conditions will be mostly cloudy for the forecast period with the possibility of trace amounts of snowfall each day. Winds will be light and northwesterly with alpine temperatures trending from -7.0 on Saturday to -13.0 by Monday.
Avalanche Summary
No new avalanche activity to report.
Snowpack Summary
In general, the upper snowpack is now well settled and riders are shredding pretty much everything. Very warm alpine temperatures from last weekend melted snow surfaces and a crust now exists to ridge top on solar aspects. There are reports of wind slabs in the alpine that developed earlier in the week. My feeling is that they are not widespread and probably gaining strength. Deeper weaknesses in the snowpack are less of a concern; however, in the southern end of the region there is still talk of basal facets as some operators are avoiding thin and rocky alpine features. This represents a very low probability-high consequence scenario. Large cornices are also widespread in the alpine. A dusting of new snow now sits on weak snow crystals that developed over the past week (surface hoar/crusts/facets). This will be the big thing to watch as the overlying slab evolves.
Problems
Cornices
Aspects: North, North East, East.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Feb 11th, 2012 3:00AM