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Avalanche Forecast

Archived

Feb 20th, 2025–Feb 21st, 2025

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

Regions

Cariboos, Blue River, Clearwater, Premier, Quesnel, Clemina, North Monashee, Robson.

Carefully assess local conditions, as new snow, wind, and warming temperatures could increase avalanche danger throughout the day.

Confidence

Moderate

Avalanche Summary

There have been a few reports of small (size 1-1.5) loose dry avalanches from steep terrain over the past few days.

Otherwise, no avalanche activity has been reported since last weekend.

With more snow, wind, and warm temperatures in the forecast, we anticipate natural avalanche activity in the coming days.

Snowpack Summary

New snow is accumulating across the region, burying various surfaces, including old wind-affected snow in exposed terrain, sun crusts on south-facing slopes, and weak surface hoar or faceted grains in sheltered areas.

Layers from dry conditions in January are found at varying depths within the upper 100 cm of snow. These include weak faceted snow, sun crusts on south-facing slopes, and surface hoar in shaded terrain.

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

Weather Summary

Thursday Night

Cloudy with 1 to 4 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday

Cloudy with 2 to 10 cm of snow. 30 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Saturday

Cloudy with 10 to 20 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1800 m.

Sunday

Cloudy with 5 to 15 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
  • Avalanche danger is expected to increase throughout the day.
  • Be aware of the potential for large avalanches due to buried weak layers.

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.

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.