Avalanche Forecast
Issued: Dec 20th, 2016 4:00PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeAvalanche Control will occur tomorrow on Mt Bourgeau, Mt Stephen, Mt Field, and Mt Bosworth. No skiing or climbing in these areas.
Give the windslab/facet interface a few days to settle and bond. JPK
Summary
Weather Forecast
Relatively warm winter temperatures, a little more snow and continued westerly winds are forecast for the area. This should be good news in the long term but it is expected that the new snow facet interface will take a while to bond.
Snowpack Summary
The storm has brought us 30 cm of new snow in the Yoho area. Moderate to strong winds have created a windslab that overlays a very loose faceted snowpack. The windslab/facet interface produced easy results in our snowpack tests. The Nov crust is 30-80cm deep, and is not currently reactive.
Avalanche Summary
Monday saw an increase in avalanche activity that was not apparent today. Poor visibility may have limited observations.
Confidence
Problems
Wind Slabs
New snow and strong winds have created a windslab on exposed slopes in the alpine and tree line that could be easily skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
- Use caution in lee areas. Recent wind loading have created wind slabs.
- Be careful with wind loaded pockets while approaching and climbing ice routes.
Aspects: North, North East, East, South East, South.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 21st, 2016 4:00PM