Avalanche Forecast
Issued: Jan 17th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Tereza Turecka,
No recent natural avalanche activity and a cooling trend are a good sign of healing snowpack.The alpine is still a suspect due to the week long wind event.
Summary
Weather Forecast
Tuesday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: High -10 °C. Ridge wind light.
Wednesday: A mix of sun. Precipitation: Trace. Alpine temperature: Low -13 °C, High -11 °C. Ridge wind west: 10 km/h.
Thursday: Flurries. Accumulation: 12 cm. Alpine temperature: Low -11 °C, High -6 °C. Ridge wind west: 20 km/h gusting to 60 km/h.
Snowpack Summary
Variable amounts of new snow across the region with up to 15 cm further south. The upper snowpack has been heavily wind affected especially in wind prone areas. The mid snowpack is faceted with a persistent weak layer buried 40-70cm down. Basal facets and depth hoar can be found at the base of snowpack.
Avalanche Summary
Sunday Icefields patrol had fair visibility and no new naturals were noted. Our nearest neighbors reporting small wind slab and persistent slab results from their explosives control in the Alpine.
Confidence
The weather pattern is stable
Problems
Wind Slabs
Wind slab development has been more pronounced in the icefields area. Investigate its bonding to the old snow surface before committing to your line.
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
A persistent slab sits over 2 different layers depending on elevation and aspect. Below 1950m, the layer is the early Dec rain crust roughly 40-60cm down. Above 1950m, facets buried after the holidays cold spell are the primary layer of concern.
- Dig down to find and test weak layers before committing to a line.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 18th, 2022 4:00PM
