Avalanche Forecast
Issued: Mar 13th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs and Loose Wet.
trettie,
Avalanche Canada
Avoid Avalanche Terrain.
Solar input and rapidly rising freezing levels will likely result in a widespread natural avalanche cycle.
Check out our latest blog about the forecasted warming.
Summary
Confidence
Avalanche Summary
As freezing levels rise we expect avalanche activity to increase in both size and frequency.
On Sunday, a sledder accidentally triggered a size 2.5 wind slab avalanche on a west aspect at 1580 m on Mt Beadnell, commonly referred to as the Adrian riding area. This resulted in a critical burial, serious injuries, and helicopter evacuation.
Snowpack Summary
As the sun comes out and freezing levels rise the snow surface will become moist or wet at all elevations and on all aspects.
80 to 120 cm of recent snow has been redistributed by southerly winds. This new snow sits over a layer of softer, faceted snow which itself overlies a crust on all but high north aspects. Large surface hoar grains have been observed just below the storm snow in the Mt Cain area. The bond at this interface is likely improving under the weight of the recent snow but it is not yet reliable. It has produced recent destructive avalanches.
The mid and lower snowpack is generally settled and strong.
Weather Summary
Wednesday Night
A mix of clear skies and cloud. 15 to 30 km/h southwest alpine wind. Freezing level falling to 1100 m.
Thursday
A mix of sun and cloud. 15 to 30 km/h west alpine wind. Freezing level rising to 3400 m.
Friday
Mostly sunny. 10 to 20 km/h northwest alpine wind. Freezing level around 3400 m.
Saturday
Sunny. 25 to 40 km/h southeast alpine wind. Freezing level around 3400 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Back off slopes as the surface becomes moist or wet with rising temperatures.
- Avoid sun exposed slopes, especially if snow surface is moist or wet.
- Avoid terrain traps where the consequence of any avalanche could be serious.
- Avoid exposure to slopes that have cornices overhead.
Problems
Persistent Slabs
80-150 cm of recent storm snow is settling over a weak layer of faceted snow and spotty surface hoar on a firm crust. Rising freezing levels and solar input will increase the likelihood of triggering this layer.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Solar input and rising freezing levels will make wet loose avalanches almost certain.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 14th, 2024 4:00PM
