Avalanche Forecast

Issued: Dec 3rd, 2014 4:00PM

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

Avalanche Canada stephen holeczi, Avalanche Canada

Human triggered avalanches are likely due to the instability of the recent storm snow over the Nov. crust/facets.  This will not change in the near future.  SH

Summary

Weather Forecast

We are on a warming trend for Thursday with highs in the -5 to -10 cm range. Expect light to Moderate SW winds over the forecast period, and 5-10cm Friday and Saturday.

Snowpack Summary

55cm of storm snow overlie a crust (Nov 6), which is only 15cm above the ground. For the most part the snowpack lacks cohesion and forecasters were breaking through on skis to the ground. Consistent whumphing below treeline.

Avalanche Summary

No avalanche activity was observed or reported in the Little Yoho region today.

Confidence

Due to the quality of field observations on Wednesday

Problems

Deep Persistent Slabs

An icon showing Deep Persistent Slabs

The primary problem in the snowpack is the interface between the recent storm snow and the November 6th and 24th facet/crust interfaces. Watch for remote triggers.

  • Watch for whumpfing, hollow sounds, and shooting cracks.
  • Use conservative route selection, choose moderate angled and supported terrain with low consequence.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

2 - 3

Wind Slabs

An icon showing Wind Slabs

The wind affect will be encountered above treeline and above in wind exposed terrain.

  • Watch for whumpfing, hollow sounds, and shooting cracks.
  • Be careful with wind loaded pockets while approaching and climbing ice routes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

2 - 2

Valid until: Dec 4th, 2014 4:00PM