Avalanche Forecast
Issued: Apr 25th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Cornices, Wind Slabs and Loose Wet.
TRettie,
Avalanche Canada
Continuously assess for changing conditions as you move through terrain. Winter like conditions could still be found at higher elevations.
Summary
Confidence
Weather Forecast
Monday night: Up to 5 cm of new snow expected. Light to moderate southerly winds. Freezing level falling to 1000 m with the possibility of a mild temperature inversion above.
Tuesday: Mostly cloudy with trace amounts of new snow expected. Light southeast winds and freezing levels around 1800 m.
Wednesday: Mostly cloudy with around 5 cm of new snow expected. Moderate west to southwest wind and freezing level around 1700 m.
Thursday: A mix of sun and cloud with the possibility of light flurries bringing trace amounts of new snow. Light southwest winds and freezing levels rising to 1800 m.
Avalanche Summary
Only wet loose avalanches have been reported over the past few days. We suspect that small pockets of wind slab could be found in the alpine. When the freezing level rises or the sun comes out wet loose avalanches are likely.
If you are out in the backcountry please consider filling out a Mountain Information Network report.
Snowpack Summary
Dry snow and pockets of wind slab can still be found in the alpine. The upper snowpack contains several crusts that extend up to mountain tops on solar aspects. Moist snow will likely be observed at lower elevations and on solar aspects if the sun comes out.
Cornices are very large and exposure to slopes beneath them should be minimized, especially if the weather is sunny, warm, or windy. The snowpack deteriorates rapidly at lower elevations.
Terrain and Travel
- Minimize your exposure time below cornices.
- Carefully evaluate steep lines for wind slabs.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
Problems
Cornices
Cornices may be weak and reactive to human triggers. Give them a wide berth when travelling on ridges. They are a significant hazard alone and may produce large slab avalanches as they fall onto the slope below. Cornice falls are more likely when the weather is sunny, warm, or windy.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Wind Slabs
Winter conditions will likely persist at higher elevations for the next few days. Winds slabs are possible. Keep an eye on new snowfall amounts and look for wind transport as you gain elevation.
Aspects: North, North East, East, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Loose Wet
When the freezing level rises or the sun comes out wet loose avalanches will become likely. Back off slopes as the surface gets moist and avoid steep slopes above terrain traps where getting caught in even a small avalanche could be consequential.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 28th, 2022 4:00PM
