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Avalanche Forecast

Archived

Apr 21st, 2024–Apr 22nd, 2024

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

Regions

Cariboos, Blue River, McBride, Premier, Quesnel, Sugarbowl, Clemina, North Monashee, Renshaw, Robson.

Low hazard doesn't mean no hazard. Carefully evaluate your line for wind slab hazard, especially near ridgecrests and in extreme terrain.

Confidence

Moderate

Avalanche Summary

A couple of large cornice failures have been observed over the past few days. Both took place in high alpine areas in north-facing terrain. Neither of these failures propagated any weak layers on the slopes below.

Snowpack Summary

A dusting of snow sits over a widespread melt-freeze crust on all but high north-facing alpine terrain, where snow remains dry and wind affected.

Weather Summary

Sunday night

Cloudy with a trace of snow at upper elevations. 30 to 50 km/h northwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1200 m.

Monday

A mix of sun and cloud. 20 to 40 km/h northwest ridgetop wind, easing. Treeline temperature 0 °C. Freezing level 1900m.

Tuesday

A mix of sun and cloud. 20 to 40 km/h southeast ridgetop wind. Treeline temperature +3 °C. Freezing level 2300m.

Wednesday

Sunny. 10 to 30 km/h southwest ridgetop wind. Treeline temperature +2 °C. Freezing level 2100m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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.