Avalanche Forecast

Issued: Nov 23rd, 2021 3:00PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada JMackenzie, Avalanche Canada

A little bit of snow has freshened the landscape, but be aware that previously formed wind slabs are now somewhat hidden. These wind slabs may be human triggerable in steep or unsupported terrain.

Summary

Confidence

Moderate -

Weather Forecast

By Wednesday morning up to 10cm of fresh snow will have fallen. Midday temps should reach -7 with moderate to strong SW winds. By late Wednesday the winds will be near 125km/h at ridgetop, with the same on Thursday.

Avalanche Summary

Nothing noted or reported today. 

Snowpack Summary

Up to 10cm of new snow in the past 24 hours, with less in the Eastern ranges (such as Highwood Pass). This overlies extensive amounts of tracks in the popular areas and wind slab most everywhere else. Alpine areas are extensively wind damaged with hard wind slabs present in most places. The November crust (now buried 20 to 30cm) tapers out quickly above 2200m.

Terrain and Travel

  • Approach lee and cross-loaded slopes with caution.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.

Problems

Wind Slabs

An icon showing Wind Slabs

Wind slabs dominate the landscape in the Alpine and in open areas at Treeline. These will now be buried under 5 to 10cm of fresh snow.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Nov 24th, 2021 3:00PM