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Avalanche Forecast

Archived

Dec 20th, 2023–Dec 21st, 2023

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

East Kakwa, Tumbler.

Deeper deposits of cohesive snow may sit a top of a generally weak lower snowpack.

Confidence

Low

Avalanche Summary

No new avalanches have been reported. There are very few field observations coming from this forecast area. Remember that a lack of avalanche reports does not necessarily mean a lack of avalanche activity.

If you go out in the backcountry, please consider sharing your observations on the Mountain Information Network (MIN).

Snowpack Summary

Snowpack has been heavily wind-affected in exposed terrain. A layer of surface hoar is roughly 10 to 30 cm below the surface.

In general, the snowpack is still very shallow and facetted. Average snowpack depths vary dramatically at treeline from 20 to 80 cm.

Weather Summary

Wednesday Night

Partly cloudy with no precipitation, southwest alpine winds 30 to 50 km/h, treeline temperature -3 °C.

Thursday

Mostly cloudy with no precipitation, southwest alpine winds 40 to 60 km/h, treeline temperature -1 °C.

Friday

Mix of sun and cloud with no precipitation, southwest alpine winds 50 to 70 km/h, treeline temperature 0 °C.

Saturday

Mostly sunny with no precipitation, southwest alpine winds 40 to 50 km/h, treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • If it's deep enough to ride, it's deep enough to slide (avalanche).
  • Avoid areas where the snow feels stiff and/or slabby.

Problems

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.