Avalanche Forecast

Archived

Feb 13th, 2024–Feb 14th, 2024

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Natural avalanches unlikely.

Regions

Kananaskis, Bow Valley, Highwood Pass, North 40, Spray - KLakes.

Travel is fairly easy right now with the frozen crust which has about 10-20cm on it. This crust can be a sliding hazard on steeper lines.

Confidence

High

Avalanche Summary

One small size 1 natural loose dry avalanche was observed on steep alpine terrain that started in non-skiable terrain.

Snowpack Summary

Monday night's storm left us with a whopping 2-4cm. Now we are looking at 10-20cm of loose snow over the Feb 3 crust. This crust is anywhere from 0.5cm to 5cm thick up to 2500m and is on the thinner side on North aspects. Natural sluffing has subsided but can still gain momentum with skier traffic on steeper slopes. Some wind slab development in the alpine have been reported but so far, it is quite isolated to the higher alpine features. Ski quality is dust on crust in the alpine. The depth of the snowpack still varies from 70-130cm.

Weather Summary

Wednesday will bring a mix of sun and cloud with a high of -16c in the alpine. Winds are expected at 10km/h from the NE. After that we are looking at some clear sunny days.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

Avoid areas with a thin or variable snowpack.
Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.

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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.