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Archived

Avalanche Forecast

Dec 21st, 2022–Dec 22nd, 2022
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

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.

Avalanche Problems

Persistent Slabs

The Nov 17 and Dec 5 surface hoar are down ~75cm and ~35cm respectively, and still a concern for rider triggering in isolated areas that haven't been skied. These layers are still reactive in snowpack tests in isolated locations.

Aspects: All aspects.

Elevations: Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5