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Avalanche Forecast

Archived

Apr 8th, 2021–Apr 9th, 2021

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Kananaskis.

Winter is standing its ground and not going away just yet. 20-25cm of new snow is keeping the skiing good and the winter people happy. Closely monitor winds and solar input for the next day or so. Our good conditions will turn on us at a moments notice when the wind arrives.

Confidence

High -

Weather Forecast

Today we received more snow than expected, which lowers the confidence in the actual weather forecast. According to the official forecast we'll get only a few more centimeters by tomorrow afternoon. This could very well be higher given the convective nature of the flurries. Temperatures will remain below zero with good cloud cover, buying us some time before it all becomes moist from heat. Winds will pick up in the afternoon to 40km/hr, SW. It will be important to monitor those given the amount of new snow.

Avalanche Summary

Several loose dry avalanches out of steep cliff terrain. No slabs were triggered by the loose dry avalanches.

Snowpack Summary

We received 20-25cm of new snow last night that stayed cold for most of today. Only valley bottoms had moist, heavy snow. In most places this new snow sits on a frozen crust that offers good support. We did find one steep roll at treeline that for some reason didn't have the frozen crust. Instead, it was insulated moist snow that whumphed on a couple of occasions. Once there is a slab on that moist snow, expect an avalanche. An overall lack of wind today kept the slab threat low. That will change once there's wind. 

Terrain and Travel

  • Avoid steep convex slopes.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.