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Avalanche Forecast

Archived

Nov 27th, 2022–Nov 28th, 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, human triggered possible.
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.

Avoid exposing yourself to overhead hazards and be extra cautious near ridges where fresh wind slabs are most likely to form. A thin snowpack barely hides hazards like rocks and logs.

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: Recent 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 treeline elevations are 40-70 cm and in the alpine 60-120 cm. Below treeline elevations remain below the threshold for avalanches.

Weather Summary

Sunday Night

Trace to a few cm of snow ending overnight as the area transitions to a colder and dryer pattern.

Monday

Dry with a mix of sun and cloud, Light wind from the northeast and temperatures falling to the -15 to -20 C range.

Tuesday

Very similar to Monday, just a bit colder.

Wednesday

An incoming disturbance should flip the wind back to the southwest, carry in clouds, and warm temperatures to around -10 C. Only a trace to 10 cm of snow is expected.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be especially cautious as you transition into wind affected terrain.
  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • 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.