Avalanche Forecast
Issued: Feb 10th, 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
Avoid overhead hazard. Solar input could increase the chances of cornice falls and wet loose avalanches on sun exposed slopes.
Summary
Confidence
Weather Forecast
Thursday night: no new snow expected. Freezing levels falling to 1200m. Moderate norhtwest winds.
Friday: Sunny with freezing levels around 1700m. Light to moderate northwest winds.
Saturday: sunny with light to moderate northwest winds. Freezing level rising to 2200m.
Sunday: sunny with light west winds. Freezing level rising to 2000m.
Avalanche Summary
No new avalanches were reported over the past few days.
Snowpack Summary
A new melt-freeze crust is expected on solar aspects into the alpine and all aspects at lower elevations. This crust will likely break down and become moist as the sun comes out. Ongoing periods of strong westerly winds have formed wind slabs and large cornices in exposed terrain at higher elevations.
The January 30 interface is now typically down around 20cm and consists of a variety of forms including surface hoar, facets and a crust. It is generally only concerning in the north part of the region. The mid January crust is down 20 to 70 cm deep. In most of the region this crust may only be found on solar aspects. In heavily wind effected areas it may be found on the surface.
The early December crust/facet persistent weak layer is now 100-200 cm deep. This layer produced numerous very large avalanches in January but is now considered dormant. See this forecaster blog on how to manage this layer as it may come into play again later this season.
Terrain and Travel
- Be careful as you transition into wind affected terrain.
- Cornices become weak with daytime heating or solar exposure.
- Avoid steep slopes when air temperatures are warm, or solar radiation is strong.
Problems
Cornices
Large cornices are expected with ongoing strong to extreme wind over the past week. A cornice failure has the potential to trigger a slab avalanche on the slope below.
Aspects: North, North East, East, South East, South.
Elevations: Alpine.
Likelihood
Expected Size
Wind Slabs
Recent strong westerly winds have formed wind slabs in exposed terrain at higher elevations.
Aspects: North, North East, East, South East, South, South West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Solar input and rising freezing levels could trigger loose wet and wet slab avalanches.
Aspects: South East, South, South West, West.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Feb 11th, 2022 4:00PM
