Avalanche Forecast
Issued: Apr 26th, 2014 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Deep Persistent Slabs.
mike.koppang,
Alberta Parks
A few more cm of snow will fall overnight. Watch for the sun coming out as solar radiation will rapidly decrease stability especially on solar aspects. One large avalanche was observed on saturday. Click details for more information.
Summary
Confidence
Fair - Timing or intensity of solar radiation is uncertain
Weather Forecast
Conditions will remain cool overnight and we can expect about 5cm of new snow throughout the night. Freezing levels will be around 1800-2000m. The forecast is calling for a mix of sun and cloud so expect stability to decrease when the sun comes out.
Avalanche Summary
There were a few small loose wet slides and one larger sz 3 avalanche on a SE aspect on commonwealth ridge. This slide was likely triggerred by solar radiation but it failed in the basal facets and ran full path the the end of its historical runout. Photo
Snowpack Summary
A few new cm of snow fell overnight on Friday and throughout the day on Saturday. This snow is overlying a thick melt freeze crust and there are isolated windslabs in alpine areas. Lower elevations are isothermal later in the day (or earlier if the freeze is poor) and the only dry snow you will be able to find is on sheltered north aspects.
Problems
Deep Persistent Slabs
The basal facets are producing large slab avalanches that are failing on the basal facets.
Be aware of thin areas that may propogate to deeper instabilites.>Pay attention to overhead hazards like cornices.>Make your travel plans to take advantage of overnight freezing.>
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Apr 27th, 2014 2:00PM
