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Avalanche Forecast

Archived

Nov 26th, 2022–Nov 27th, 2022

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.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

South Rockies, Akamina, Crowsnest North, Crowsnest South, Elkford East, Elkford West.

With new snow and wind expected Sunday avoid exposing yourself to overhead hazards and be extra cautious near ridges where fresh wind slabs are most likely to form.

Confidence

Moderate

Avalanche Summary

There are only a few eyes out in the mountains, but I haven't received recent reports of avalanches. If you do get out riding please consider reporting in the MIN,

Snowpack Summary

Upper Snowpack: Forecast new snow will be redistributed by the wind (aka form windslabs). Below this is a layer of wind hardened or settled snow.

Lower Snowpack: cold temperatures have weakened and faceted the snowpack. A basal rain crust sits near the ground.

Total snowpack depths at the treeline are 40-70 cm and in the alpine 60-120 cm. Below treeline remains below the threshold.

Weather Summary

Friday Night

Cloudy with clearing periods, 5 cm accumulation, west ridge winds light to 20 km/h gusting to 45, alpine low -3 C freezing level at valley bottom with a weak temperature inversion.

Saturday

A mix of sun and cloud, trace accumulation, ridge winds southwest 25 to 35 km/h gusting to 60km/h, alpine temperatures to -6 to -3 C freezing level to 800m in some places of the south.

Monday

A mix of sun and cloud, Cloudy, 10 cm accumulation, ridge winds 15 to 30 km/h west and gusting to 70 km/h, alpine temperatures -6 to -10 C with freezing level to near valley bottom.

Tuesday

Mainly cloudy, trace to 5 cm accumulation, northeast ridge winds 15 - 25 km/h, alpine temperature of -12 C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind affected terrain.
  • Avoid terrain traps where the consequence of any avalanche could be serious.

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.