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Avalanche Forecast

Archived

Feb 11th, 2025–Feb 12th, 2025

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, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

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

Slab avalanches are most likely where a firm, cohesive slab exists on the surface.

While loose dry avalanches are possible on steep slopes with loose, unconsolidated snow.

Confidence

High

Avalanche Summary

A couple of size 1 skier-triggered avalanches have been reported in recent days. They have occurred on south-facing slopes, failing on a crust with facets or surface hoar above, buried 20 to 30 cm deep.

Snowpack Summary

The upper snowpack continues to facet with the current cold, clear, and dry conditions, keeping surface conditions generally soft and low-density. Variable wind effects can be found in exposed terrain at treeline and above due to recent north and downflowing winds.

Various layers buried at the end of January are approximately 20 to 50 cm below the surface. These include sun crusts on sun-affected terrain, surface hoar in shaded terrain at treeline and below, and weak faceted grains elsewhere.

The snowpack remains faceted and weak in places just below these layers following the dry January conditions.

The mid and lower snowpack is generally well-settled and strong.

Weather Summary

Tuesday Night

Mostly clear skies. 20 to 40 km/h north ridgetop wind. Treeline temperature -18 °C.

Wednesday

Mostly sunny. 20 to 40 km/h west ridgetop wind. Treeline temperature -15 °C.

Thursday

Mostly sunny. 10 to 30 km/h south ridgetop wind. Treeline temperature -15 °C.

Friday

Mostly sunny. 10 to 30 km/h west ridgetop wind. Treeline temperature -15 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Be alert to conditions that change with elevation and sun exposure.
  • Carefully evaluate steep lines for wind slabs.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

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.