Avalanche Forecast
Issued: Jan 16th, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
Aaron Beardmore,
Parks Canada
Things are improving but uncertainty remains with forecasters regarding the persistent slab problem. Remaining conservative in your decision making is still advised.
Summary
Weather Forecast
A weak system will track through the forecast region starting Thursday night, bringing up to 15cm of snow by the end of Saturday. Temperatures will remain on the warm side of seasonal. Alpine winds will increase late friday to the strong range from the SW.
Snowpack Summary
Solar crusts on some steep SE to West slopes at TL. Surface hoar development at treeline. In thick snowpack areas, the Dec 10th weak layer of facets is now down 100-150cm with a stronger snowpack below. In thin snowpack areas, there is little separation between Dec 10 and the weak depth hoar/ facets sitting 40 cm above the ground
Avalanche Summary
No avalanches observed or reported today.
Confidence
Intensity of incoming weather systems is uncertain on Saturday
Problems
Persistent Slabs
In deeper snowpack locations the Dec 10 layer is a thin, separated, layer of facets about 120cm deep which is becoming less of a problem. In thinner areas however, Dec 10 is only about 80cm deep and has a thick, weak, facet layer siting just below.
Convex features and steep unsupported slopes will be most prone to triggering.Be aware of the potential for wide propagations which could result in large avalanches.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Jan 17th, 2019 4:00PM
