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Avalanche Forecast

Archived

Mar 8th, 2025–Mar 9th, 2025

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural and human triggered avalanches likely.
Alpine
Natural and human triggered avalanches likely.
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, McBride, Premier, Quesnel, Clemina, North Monashee.

Avoid all avalanche terrain.

Buried weak layers combined with a lot of new snow mean avalanche conditions are very dangerous.

Confidence

High

Avalanche Summary

New snow and wind are forecast which will lead to an increase in avalanche size and likelihood this weekend. Large storm slabs and persistent slabs are expected.

Snowpack Summary

The storm continues, and is expected to total 30 to 50 cm by the end of the day on Sunday.

Underneath the new snow is a melt-freeze crust that extends to ridge top on all aspects, except northerly slopes above 1700 m.

A weak layer formed in February, consisting of facets, surface hoar, or a crust, is found 30 to 60 cm deep. Additional weak layers formed in January are present within the upper 100 cm of snow, including faceted snow, crusts on south-facing slopes, and surface hoar in shaded terrain.

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

Weather Summary

Saturday Night

Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Sunday

Cloudy with 10 to 20 cm of snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Monday

A mix of sun and cloud with 5 to 10 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Tuesday

A mix of sun and cloud with 5 to 15 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.
  • Avoid the runout zones of avalanche paths. Avalanches could run full path.
  • Only the most simple non-avalanche terrain with no overhead hazard is appropriate at this time.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.