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Avalanche Forecast

Archived

Mar 27th, 2025–Mar 28th, 2025

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

Regions

Cariboos, North Rockies, McBride, Quesnel, Sugarbowl, East Kakwa, Kakwa, McGregor, Pine Pass, Renshaw, Robson, Tumbler.

Carefully assess the snowpack and terrain. While danger is decreasing, lingering instabilities may still exist.

Confidence

Moderate

Avalanche Summary

Warm weather on Tuesday and Wednesday triggered numerous wet loose avalanches, mostly size 2. Earlier in the week, a few size 2 wind slab avalanches and cornice failures were also observed.

Although no recent persistent slab avalanches have been reported, this remains the main problem to monitor. The avalanches shown below from Barkerville last week illustrate this problem well.

Snowpack Summary

Light snowfall with northeast winds will create a dusting of soft snow above the wet and settled storm snow from the past week. We expect a frozen crust layer to form in most terrain, except possibly on shaded alpine slopes.

A persistent weak layer from early March, 40 to 80 cm deep, is most likely found as surface hoar on sheltered north and east aspects at treeline and above. Its distribution is variable, and there have been no substantial reports of recent avalanches, but it should still be considered when evaluating slopes.

Weather Summary

Thursday Night

Cloudy with 0 to 5 cm of snow, except 5 to 15 cm around Kakwa. 50 km/h east ridgetop wind. Treeline temperature -10 °C.

Friday

Cloudy with 0 to 1 cm of snow. 40 km/h northeast ridgetop wind. Treeline temperature -8 °C.

Saturday

Mostly sunny. 20 km/h northeast ridgetop wind. Treeline temperature -6 °C.

Sunday

Sunny. 20 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully evaluate big and steep terrain features before committing to them.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Surface hoar distribution is highly variable. Avoid generalizing your observations.

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.