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Archived

Avalanche Forecast

Dec 17th, 2014–Dec 18th, 2014
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
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
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: Little Yoho.

We are in a classic Rockies snowpack. Thin and rocky with a basal weakness. Forecasters have low confidence in any steeper terrain above tree line. Keep this in mind when choosing terrain to ride!

Weather Forecast

Cool temperatures, light winds and minimal precipitation are the short term forecast. Cloud cover will increase Thursday/ Friday and we might get a few snowflakes through the weekend. A mild inversion is making alpine temperatures more comfortable, but doing little to destabilize the snowpack.

Snowpack Summary

In the alpine a few cm`s of new snow overlies a firm base of old wind slabs. At treeline and above, mild temperatures have helped strengthen the upper snowpack but the basal rain crust/facets remain weak. Below treeline a rain crust is present and the snowpack is solidly frozen in most areas.

Avalanche Summary

No new avalanches reported in the Little Yoho region recently.

Confidence

Due to the number of field observations

Avalanche Problems

Deep Persistent Slabs

Natural avalanche activity has tapered off but snowpack tests show that the weak facets at the base of the snowpack continue to be a concern. With a stronger upper snowpack, triggering an avalanche is less likely but the consequences remain serious.

  • Be aware of thin areas that may propogate to deeper instabilites.
  • Be aware of the potential for full depth avalanches due to deeply buried weak layers.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3