Jasper National Park
Noah Bangle , Monday 15th November, 2021 8:00AM
Skied the mellow slopes off of the summer trail today . HST in parking lot was 30cm and was closer to 40cm as we gained tree line. Average HS was 100cm . We observed moderate sw winds with strong gusts and was snowing at a rate of s-1 for most of the day . We dug a test profile on an easterly aspect at 2000m and had 2 repetable sudden collapse results (CTE1) down 30 in the storm snow , and hard results below a crust 5cm off the ground. What was somewhat surprising was how soft the storm slab was and how reactive it was , we observed 2 small size 1's in the storm snow. And a large size 2 SS/WSL that propogated most if the way across the main slope at parkers .
Snow conditions were: Deep powder. Weather conditions were: Cloudy, Stormy, Warm, Windy. We rode: Mellow slopes. We avoided: Alpine slopes, Steep slopes. Riding quality was amazing.
Avalache Conditions: 30cm + of new snow, or significant drifitng, or rain in the last 48 hours.
Witnessed this slide from about 200m away. Pretty large size 2 that was fist moving with large powder cloud. It made it well into the trees in the runout . vis was poor but the crown near the top seemed closer to 1m with the flanks averaging 50cm . seemed to scrub out the rocks MP. Its possible that we remote triggered the avalanche but cannot say forsure and with the intensity of the storm it seemed likely it coukd have been naturally triggered