Avalanche Forecast
Issued: Nov 8th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Jasper Snow Safety,
Early season hazards are very present at the moment. Reverse loading could have built wind slabs on the southerly aspects.
Summary
Weather Forecast
Monday: Cloudy with sunny periods. Alpine temperature: Low -13 C, High -10 C. Ridge wind west: 15 km/h. Freezing level at valley bottom.
Snowpack Summary
Treeline has a snowpack of 30-40cm with overall supportive travel. 10cm of recent snow has been redistributed from moderate northerly and westerly winds and overlies a rain crust which exists up to 2200m. Winds have formed wind slabs and wind effect on S through E aspects at ridge top. Below treeline the snow remains below threshold values.
Avalanche Summary
Friday's patrol noted one size 2.5 wind slab in the alpine on large east facing rock slab, It appeared to be cornice triggered, started loose and resulted in a slab lower down. Several other size 2 wind slabs were observed in alpine E aspects that near ridge tops. No new avalanches observed over the weekend
Confidence
Due to the number and quality of field observations
Problems
Wind Slabs
On Nov 4th the zone received rain and 10-30cm of warm snow with W and N winds creating some wind slab in the alpine.
- Early season hazards such as rocks, trees and stumps are still visible.
Aspects: North East, East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 9th, 2020 4:00PM
