Avalanche Forecast
Issued: Apr 6th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wet Slabs, Cornices and Wind Slabs.
TRettie,
Avalanche Canada
Keep an eye on the snow surface, as it gets moist with warming and solar input the size and likelihood of avalanches will increase.
Summary
Confidence
Weather Forecast
Wednesday night: No new snow expected. Low of -4 at 1600 m. Light to moderate west winds.
Thursday: Mostly sunny with no new snow expected. Moderate southwest winds. Freezing level rising to 2100 m.
Friday: Stormy with up to 5 cm of snow in the alpine and rain below. Strong southwest winds and freezing levels around 2100 m.
Saturday:Stormy with up to 5 cm of new snow expected. Moderate southwest winds and freezing levels around 1500 m.
Avalanche Summary
Over the past few days ski cutting and explosive control produced storm slab avalanches up to size 1.5 in the alpine and treeline. Several size 1.5 natural storm slab and dry loose avalanches were also observed.
We suspect that wet slab and wet loose avalanches could occur on all aspects and elevations except high north terrain as the freezing level rises and the sun comes out. Natural cornice falls will likely also increase.
Snowpack Summary
Up to 25 cm of previous snow has formed slabs at treeline and above. Below this a crust exists on all aspects to mountain top . Moist snow will be observed on all aspects and elevations except high north terrain as the freezing level rises and the sun comes out.
The mid and lower snowpack are generally strong and well bonded.
Terrain and Travel
- Avoid sun exposed slopes, especially if snow surface is moist or wet.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
- Avoid exposure to slopes that have cornices overhead.
- Be careful as you transition into wind affected terrain.
Problems
Wet Slabs
Wet slab and wet loose avalanches will likely increase in size and sensitivity to triggering as the freezing level rises and the sun comes out. The underlying crust will make a good sliding surface and may result in greater propagation.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Cornices
The likelihood of natural cornice falls could increase with solar input. Avoid traveling on slopes with cornices looming above.
Aspects: North, North East, East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Wind Slabs
Wind slabs will likely be found on exposed terrain at treeline and alpine. Previous strong wind means that wind slabs may be found further down slope than expected. Wind slabs may be sensitive to rider traffic due to the underlying crust.
Aspects: North, North East, East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 7th, 2022 4:00PM
