Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Careful evaluation of the snowpack and new storm snow instabilities is required.
Reports of skier triggered avalanches in the surrounding neighborhood is a reminder to be cautious and conservative.
More snow may be coming!!
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.
Avalanche Problem 2: Loose Dry
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
The 25cm of new snow is enough to create loose avalanches in steep terrain or gullies. Extra heads up for ice climbers.
Travel and Terrain Advice
- Avoid terrain traps, such as gullies, where the consequences of a small avalanche could be serious.
Avalanche Problem 3: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Sunday's storm had strong SW winds. Expect windslabs to have developed particularly on lee aspects.
Travel and Terrain Advice
- Be careful with wind loaded pockets while approaching and climbing ice routes.
Avalanche Summary
Monday's patrol observed numerous fresh size 2's mainly at treeline but also a few noted in lower alpine locations. They ranged from 35-45 degrees, 100m wide, 20-40cm deep, running to top or mid track.
Snowpack Summary
25cm of new snow with Strong Westerly winds occurred Sunday. This rests on a previous old snow surface windslab combination, the Oct 31 crust approximately 50cm down, and a spotty distributed Oct 17 crust just off the ground at lower to treeline elevations. The storm snow instability will linger for a few days and deserves your respect.
Weather Forecast
Tuesday will see 10cm of snow by the end of the day, light to moderate SW winds, and -8 degrees. The snowfall increases Wednesday to Thursday bringing maybe 60-80 cm of snow, strong winds, and warm temperatures. It may get really warm and snow allot!
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The recent 25cm of snow will be reactive for a few days until it has had time to settle. This problem was active on Monday. More snow starting on Tuesday extending into Thursday may add to this problem.