Avalanche Forecast
Regions: Jasper.
Strong to extreme winds expected to build hard slabs and scour the alpine in the next few days.Jasper has not received as much precipitation as its neighbors, hence a lower hazard rating.
Weather Forecast
Sunday: Precipitation: Trace. Alpine temperature: High -9 °C. Ridge wind southwest: 20 km/h. Monday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: Low -10 °C, High -9 °C. Ridge wind southwest: 20 km/h. Tuesday: Flurries. Accumulation: 9 cm. Alpine temperature: Low -10 °C, High -7 °C. Ridge wind southwest: 20-30 km/h.
Snowpack Summary
2-10cm of new snow with M-S south winds at ridge top. Cold temperatures faceting the snowpack. Supportive 4F-1F mid-pack in most areas, shallow areas becoming punchy. Dec 1st interface down close to 40cm, which has questionable reactivity below 1900m. Basal faceting continues near or on the ground.
Avalanche Summary
No new avalanches observed or reported today.
Confidence
Wind speed and direction is uncertain
Avalanche Problems
Wind Slabs
Approximately 10 cm of new snow in the parkway area and steadily increasing winds shifting from SW to W will contribute to wind slab development. Due to a shift in direction of the wind, expect wind slabs in unusual spots.
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
- Variable winds may create pockets of wind slab in some unexpected locations.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood: Likely
Expected Size: 1 - 2.5
Persistent Slabs
This layer is a rain crust up to 1950m and reactive to large loads. Typically this layer is down around 40cm.If you find this layer on your adventure, a MIN report would be helpful for us to track it.
- Dig down to find and test weak layers before committing to a line.
Aspects: All aspects.
Elevations: Below Treeline.
Likelihood: Possible
Expected Size: 1 - 2