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Archived

Avalanche Forecast

Dec 19th, 2021–Dec 20th, 2021
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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: Northwest Inland.

Use extra caution near ridge crests. Rider triggerable wind slab can still be found.

Confidence

Moderate -

Weather Forecast

Sunday night: light winds from the Northwest with no new snow expected. Low of -23 at 1600m.

Monday: High of -20 at 1600m with the possibility of a temperature inversion. Winds will be moderate to strong from the Northwest.

Tuesday: some light snow with extreme winds from the West. High of -18 at 1600m.

Wednesday: light to moderate East winds with 15cm of new snow expected. High of -13 at 1600m.

Avalanche Summary

No new avalanches were reported over the weekend but observations were limited. If you are out in the mountains please consider making a Mountain Information Network report.

Snowpack Summary

Variable wind over the last week means that wind slab could be found on all aspects in exposed terrain in the alpine and treeline.

An early season crust and facets can be found near the base of the snowpack. This layer now appears to have gone dormant through most of the region but could still be reactive in some shallow snowpack areas. 

Snowpack depth at treeline typically ranges from 100-200 cm, with higher values in the western part of the region and tapering to the east. In the far southwest of the region, the height of snow is closer to 300 cm. 

Terrain and Travel

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

Avalanche Problems

Wind Slabs

Wind slab could still be found in exposed terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5