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Archived

Avalanche Forecast

Dec 2nd, 2014–Dec 3rd, 2014
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
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
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

Regions: Little Yoho.

Travel is very difficult in the Little Yoho forecast region because of an unconsolidated snowpack. If you re fortunate enough to get up high, be vigilant in your route choices, the Nov crust is very susceptible to triggering. AB

Weather Forecast

A slight warming trend has come over the forecast region. Light snowfall on Firday will likely not amount to more than a few cm's. This will not have a drastic affect on the danger rating.

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 as forecasters skied below Mt. Field today.

Avalanche Summary

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

Confidence

Due to the number and quality of field observations on Tuesday

Avalanche Problems

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.

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

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

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

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

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 2