Avalanche Forecast
Issued: Apr 22nd, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet and Deep Persistent Slabs.
Marcus Waring,
Parks Canada
The snowpack is mainly in the grips of daily spring temperature swings however a basal weaknesses remains preserved under a winter snowpack on high north faces.
Summary
Weather Forecast
A mix of sun and cloud with moderate SW winds Tuesday - Thursday. Freezing level 2300m
A significant amount of precipitation is expected to arrive on friday and continue through the weekend. Freezing levels are uncertain.
Snowpack Summary
In most areas we are seeing a typical spring snowpack with crusts breaking down in the heat of the day. The exception is high North facing terrain where temperatures have stayed cold and a winter snowpack remains, with facets continuing to linger at the base. The midpack is generally well settled.
Avalanche Summary
No recent avalanches observed.
Confidence
Problems
Loose Wet
Recent snow may begin to slide on solar aspects as the sun makes an appearance and temperatures rise.
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
- Use extra caution on solar slopes or if the snow is moist or wet.
Aspects: East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Deep layers are still responsive to large triggers (think cornices or rain) on high north faces. Though triggering this layer is unlikely, it's not impossible as evidenced by a large avalanche on Mt. Blackiston last week.
- Pay attention to overhead hazards like cornices which could trigger the deep persistent slab.
Aspects: North.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 25th, 2019 4:00PM
