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Archived

Avalanche Forecast

Dec 24th, 2021–Dec 25th, 2021
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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

Regions: Glacier.

Great skiing and a stabilizing trend... Santa's really nailed it this year.

Merry Christmas!

Weather Forecast

Cold air sliding down from the north will squeeze the remaining moisture out of the atmosphere, giving cloudy conditions and flurries as the temps cool.

Tonight: Flurries, Alpine low -16*C, light East ridgetop winds

Sat: Flurries, 7cm, High -15*C, light E wind

Sun: Sunny periods, Low -22*C, High -17*C, light E wind

Mon: Sunny, Low -28*C, High -20*C

Snowpack Summary

40+cm of snow and moderate-strong Southerly winds have formed a storm slab on top of previously faceted surfaces. The December 1st crust is buried approximately 80cm-150cm, with some facetting of the snow directly above and below (facetting in most prominent in shallower snowpack areas). Beneath the Dec 1st crust, the snowpack is dense and strong.

Avalanche Summary

No new avalanche activity was observed or reported on Friday.

Artillery control on Thursday produced numerous large-very large storm slab avalanches (size 2-3.5), with some running to valley bottom.

Strong gusty winds, new snow, and warming temperatures triggered several natural storm slab and loose dry avalanches Thursday morning, up to size 3.5.

Confidence

Avalanche Problems

Storm Slabs

40+cm of new snow fell Wed/Thurs. All this new snow combined with moderate South winds and a slight rise in temperature, has formed soft slabs in many locations, these will be most problematic in the Alpine and at treeline.

  • Use caution in lee areas. Recent wind loading has created slabs over weaker snow.
  • Use safe ski cutting techniques to enter your line.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5

Loose Dry

40+cm of unconsolidated new snow has the potential to run far and fast in steep, unsupported terrain.

  • Be careful of loose dry power sluffing in steep, confined terrain.
  • Use caution above cliffs and terrain traps where small avalanches may have severe consequences.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2