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Avalanche Forecast

Archived

Apr 24th, 2024–Apr 25th, 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.

New snow will be prone to isolated wind slab formation in alpine lees, as well as solar-triggered loose avalanches on steep slopes.

Confidence

Low

Avalanche Summary

A couple of large cornice failures were observed last week in high alpine north-facing terrain. These loads notably did not propagate any weak layers on the slopes below.

Snowpack Summary

A bit of new snow falls over widespread crusty surfaces on all but high north-facing alpine terrain, where snow is dry and likely wind affected. There are no deeper concerns at this time.

Weather Summary

Wednesday night

5 to 10 cm of new snow, up to 20 cm near Mt Robson. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1400m.

Thursday

A mix of sun and cloud. 10 to 30 km/h northwest ridgetop wind, easing. Treeline temperature -1 °C. Freezing level 2000m.

Friday

A mix of sun and cloud. 10 to 20 km/h east ridgetop wind. Treeline temperature +1 °C. Freezing level 2200m.

Saturday

A mix of sun and cloud. 20 to 30 km/h south ridgetop wind. Treeline temperature +1 °C. Freezing level 2300m.

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.
  • Brief periods of sun could quickly initiate natural avalanche activity.
  • 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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.