Avalanche Forecast
Issued: Dec 28th, 2018 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
snow safety,
Parks Canada
Watch for windslabs developing with the storm tomorrow. Avalanches could step down into midpack weaknesses creating larger than expected events. Avoid avalanche terrain for a while again.
Summary
Weather Forecast
Moderate snow and strong winds are forecast for Saturday. This is likely to create new windslabs near ridgecrests.
Snowpack Summary
In most of Little Yoho there is 60-80 cm of settled snow over top of the Dec10 surface hoar/facet layer. Shears on this layer are generally producing hard but sudden planar results. In shallow areas (lower elevations and Mt. Dennis) the main concern is the weak basal facets which continue to produce whumphing and easy test results.
Avalanche Summary
No new avalanches observed or reported today in Little Yoho.
Confidence
Intensity of incoming weather systems is uncertain
Problems
Persistent Slabs
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 40-80 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
Use caution on open slopes and convex rolls at treeline where buried surface hoar may be preserved.Use caution in lee areas. Recent wind loading has created wind slabs.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 29th, 2018 4:00PM
