Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Jan 5th, 2023–Jan 6th, 2023

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

Regions

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

Concerning terrain consists of wind-loaded features and thin, rocky slopes. Read about how this year is different in our Forecasters' blog.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported in the region. However, there have been a number of recent reports of spooky snowpack test results.

Please continue to share any observations or photos on the Mountain Information Network.

Snowpack Summary

Roughly 30 to 60 cm of soft snow is found in areas sheltered from the wind, which overlies a generally weak, facetted snowpack with multiple buried weak layers. Wind-exposed terrain has been wind-affected from strong southerly wind. Wind slabs may be found in lee terrain features, which may sit over a layer of surface hoar and/or crust.

Two layers of concern exist in this snowpack:

  • A layer of facets, crust and surface hoar that was buried around Christmas and found around 30 to 60 cm from the surface.

  • A layer of large, weak facets buried in November and found near the bottom of the snowpack. This layer is likely most problematic in alpine terrain, where shallower avalanches could scrub down to these basal facets. These layers may persist for some time, as described in our Forecasters' blog.

Snowpack depths are roughly 100 to 175 cm at treeline.

Weather Summary

Thursday Night

Partly cloudy with no precipitation. Moderate to strong south wind. Alpine high of -4 °C.

Friday

Cloudy with light snowfall, accumulation 1 to 3 cm. Moderate to strong southwest wind. Freezing level 1100 m. Alpine high of -5 °C.

Saturday

Mostly cloudy with light snowfall, accumulation 2 to 5 cm. Moderate southwest wind. Freezing levels 1100 m. Alpine high of -5 °C.

Sunday

Mix of sun and cloud with isolated flurries. Light southeast wind. Alpine high of -6 °C.

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.
  • Wind slabs are most reactive during their formation.
  • Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger 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.

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.