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Avalanche Forecast

Archived

Jan 30th, 2019–Jan 31st, 2019

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Avoid uneven, shallow, and faceted areas. Try to find areas with consistent, deeper snow.

Weather Forecast

Some amount of snow and wind is coming, but models disagree on quantity. Windslabs may develop late Friday and on Saturday.

Snowpack Summary

Most regularly skied areas of Yoho have a deep snowpack that can bridge underlying problems. Isolated, shallow snowpack areas may still be triggered.

Avalanche Summary

No avalanches observed or reported.

Confidence

Track of incoming weather systems is uncertain

Problems

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.