Avalanche Forecast
Issued: Jan 14th, 2017 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
William Lawson,
Avalanche Canada
Our current snowpack is difficult to asses. Due to the variability, snowpack observations hold little weight over large areas of terrain.
Summary
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
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
Expected Size
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
Expected Size
Valid until: Jan 15th, 2017 4:00PM
