Avalanche Forecast
Issued: Mar 1st, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
Benjamin Firth,
Parks Canada
Winds will increase Sunday night into Monday. Avoid terrain with wind loading and/or thin spots where you could trigger deeper layers.
Summary
Weather Forecast
For Monday, Flurries. Accumulation: 6 cm. Alpine temperature: High -7 °C. Ridge wind west: 25 km/h gusting to 60 km/h. Freezing level at valley bottom. Tuesday, Periods of snow. Accumulation: 16 cm. Alpine temperature: Low -8 °C, High -6 °C. Ridge wind southwest: 25 km/h gusting to 65 km/h. Freezing level at valley bottom.
Snowpack Summary
Up 15cm of storm snow overlies a variety of surfaces depending on aspect and elevation. New wind slabs forming on lee aspects. The Columbia Icefields region has a well bridged mid pack overlying basal facets and depth hoar. The northern part of the forecast region has a generally shallower snow pack that is less bridged.
Avalanche Summary
Road patrol conducted on highway 93N. No new avalanches were observed or reported.
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Confidence
Intensity of incoming weather systems is uncertain on Tuesday
Problems
Wind Slabs
Triggering wind slab in shallow areas has the potential to initiate the deep persistent slab.
- Assess start zones carefully and use safe travel techniques.
- Use caution in lee areas. New snowfall mixed with wind loading will created slabs.
Aspects: North, North East, East, South East, South, South West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
- Be aware of the potential for full depth avalanches due to weak layers at the base of the snowpack.
- Avoid steep convexities or areas with a thin or variable snowpack.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 2nd, 2020 4:00PM
