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Avalanche Forecast

Archived

Apr 11th, 2025–Apr 12th, 2025

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

Regions

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

Approach ridgelines with caution, reactive wind slabs still exist at higher elevations.

Wind has varied throughout the region; assess your local conditions as you travel.

Confidence

Moderate

Avalanche Summary

On Thursday, natural wind slabs were observed to size 2.5 in the south of this region. Several wind slabs to size 2 were rider triggered at ridgelines. Cornices were also reportedly breakable under the weight of a rider.

Reactive wind slabs likely persist in the alpine on north through east aspects.

Snowpack Summary

Upper elevations have receved up to 40 cm of new snow, which sits over settling dry snow on alpine north facing slopes and a crust elsewhere.

Around 1800 m surface snow becomes moist, or crusty, and wet below 1500 m.

A persistent weak layer of surface hoar, facet, and crust layer from early March, is buried 60 to 120 cm deep. The lower snowpack is generally well-settled and strong in most areas.

Weather Summary

Friday Night

Cloudy with flurries for most areas. Localised terrain may see up to 10 cm. 25 to 35 km/h southwest ridgetop wind. Freezing level drops to 1000 m.

Saturday

Mostly cloudy with up to 5 cm of snow possible. 30 km/h northwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1400 m.

Sunday

Clear skies with 10 to 20 km/h westerly ridgetop winds. Treeline temperature -1 °C. Freezing levels reach 2000 m.

Monday

Partly cloudy. 30 to 40 km/h southerly ridgetop winds. Treeline temperature +1 °C. Freezing levels reach 2200 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Cornice failures could trigger large and destructive avalanches.

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.