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Archived

Avalanche Forecast

Jan 14th, 2017–Jan 15th, 2017
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
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
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: Little Yoho.

Our current snowpack is difficult to asses. Due to the variability, snowpack observations hold little weight over large areas of terrain. 

Weather Forecast

Warming trend through the week with valley bottom temperatures forecasted to reach above freezing. Precipe expected latter in the the week with forecasted accumulation amount quite varied at this times.

Snowpack Summary

Up to 20 cm of low density snow has been blown into hard wind slabs from north winds. These slabs overly a highly variable snowpack that consist mainly of facets, this facet / slab is the main concern in the snowpack. In most shelter areas and at lower elevators the snowpack has little to no structure.

Avalanche Summary

No avalanche activity reported or observed in Little Yoho today, but we have minimal observations from this area - so low confidence.

Confidence

Avalanche Problems

Wind Slabs

Winds from the north have created hard wind slabs in many areas, at alpine and tree line elevations. These slabs are hard to trigger, with a single person. This is becoming less likely to initiate and will likely phase out soon.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Persistent Slabs

Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Wind loaded areas seem to be the primary concern.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3