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

Dec 9th, 2018–Dec 10th, 2018

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

Regions

Cariboos.

Conditions are finally in transition. New snow will accumulate throughout the week, but forecast strong alpine winds are the critical factor for avalanche danger on Monday.

Confidence

High -

Weather Forecast

Sunday night: Cloudy with scattered flurries bringing a trace to 5cm of new snow. Moderate to strong southwest winds.Monday: Cloudy with diminishing flurries and a trace of new snow. Light to moderate southwest winds, increasing overnight. Alpine high temperatures around -8.Tuesday: Cloudy with flurries bringing about 5 cm of new snow, increasing overnight. Strong to extreme south winds. Alpine high temperatures around -8.Wednesday: Cloudy with scattered flurries with 2-5 cm of new snow, continuing overnight. Strong west winds. Alpine high temperatures around -9.

Avalanche Summary

No new avalanches have been reported.

Snowpack Summary

Increasing south winds and light new snow amounts have likely begun forming new wind slabs on north aspects. Beneath the surface, the snowpack is currently quite stable in most places, however a buried weak layer still exists down 20-60 cm. This layer consists of a sun crust on steep south facing slopes, and/or weak surface hoar crystals on more shaded and sheltered slopes. The surface hoar is most prominent at treeline. Although it is slowly healing into the snowpack, it may still react to triggers in areas where surface hoar is sitting on the crust. This combination is most likely found on steep south facing terrain at treeline.At the base of the snowpack is a crust that formed in late October. The probability of triggering this layer is low, but the most suspect areas would be large, steep, rocky alpine features with a shallow snowpack. It would likely take a large trigger such as a cornice fall to produce an avalanche on this layer.Snowpack depths decrease dramatically with elevation.The VARDA gang produced a great video from the Allan Creek zone near Valemount, click here to check it out.

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.