Avalanche Forecast
Issued: Jan 10th, 2023 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Deep Persistent Slabs.
isnowsell,
Avalanche Canada
Make conservative terrain choices as buried weak layers continue to be a concern and new snow takes time to bond to underlying layers.
Summary
Confidence
Avalanche Summary
A number of natural and rider-triggered storm slab avalanches were reported on Monday. Occurring from 1800 to 2000 m elevation, on a variety of aspects.
Please continue to share any observations or photos on the Mountain Information Network.
Snowpack Summary
20 to 30 cm of snow overlies a layer of large surface hoar in wind-sheltered terrain. A melt-freeze crust is buried by roughly 50 to 70 cm. This crust ranges from 2 cm at higher elevations to 10 cm at lower elevations. Below the crust, the mid-snowpack is generally well consolidated. A weak layer of facets and a crust near the bottom of the snowpack remains a concern.
Treeline snow depths are roughly 150 to 200 cm.
Weather Summary
Tuesday night
Mostly clear, no precipitation. Light southwest ridgetop winds. Treeline temperatures 0 to -5 C.
Wednesday
A mix of sun and cloud, with no precipitation. Light southwest ridgetop winds. Treeline temperatures -5 to -10 C.
Thursday
Cloudy with flurries, 2 to 5 cm. Moderate south ridgetop winds. Treeline temperature -5 to -10 C.
Friday
Cloudy with snow, 10 to 15 cm. Moderate south ridgetop winds. Treeline temperatures around 0 C. Freezing levels 2000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Uncertainty is best managed through conservative terrain choices at this time.
- Closely monitor how the new snow is bonding to the old surface.
- Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
Problems
Storm Slabs
Storm slabs may reman reactive longer then typical in sheltered terrain features where overlying preserved surface hoar.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
Human triggering of deep weak layers remains possible in terrain with shallow, variable snowpacks. Where supportive to riders, a melt-freeze crust may be providing a bridging effect, making it more difficult to trigger deeper layers.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 11th, 2023 4:00PM
