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 21st, 2022–Dec 22nd, 2022

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
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

Glacier.

Start your trip early and bring lots of layers, it's going to be a cold, short day.

Even small incidences can have high consequences.

Confidence

Moderate

Avalanche Summary

Reports of settlements and whumphing continue to be reported in previously untracked terrain.

Isolated natural sluffs and small avalanches up to size 1 have been observed along the highway corridor in the past few days.

Snowpack Summary

Up to 10cm now buries the Dec 16 surface hoar (up to 10mm at tree line and below) and a crust on solar aspects.

The snowpack is thin (~110cm at 2000m) and generally facetted. The Dec 5 and Nov 17 surface hoar layers are down ~40cm and ~70cm respectively and still producing easy to moderate snowpack tests in some locations.

Atypical early season hazards are present throughout the park.

Weather Summary

Thursday remains cold and dry, warming begins Friday along with snow in the forecast.

Thurs: Sun and cloud, Nil precip, Alp High: -20*C, Ridge wind: SE-15 km/h

Fri: Flurries, 9 cm, Alp High: -11*C, Ridge wind: S-20 km/h

Sat: Flurries, 6 cm, Alp High: -5*C, Ridge wind: SW-20-35 km/h

Terrain and Travel Advice

  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • Exercise caution on steep, unsupported slopes.
  • Uncertainty is best managed through conservative terrain choices at this time.

Problems

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.