Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Good skiing is found in the region with winter like conditions.
Avalanche Problem 1: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Use caution on open slopes and convex rolls
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Persistent slabs sit on facets on North aspects and a hard melt-freeze crust on solar aspects. Use a cautious approach and assess the bond at these interfaces before committing to a slope.
Travel and Terrain Advice
- Watch for signs of instability such as whumpfing, or cracking.
Avalanche Summary
Sunday patrol noted very little in fresh natural activity as the sun was kept at bay by cloud cover. Some size 1 moist surface sluffing was noted on steep sun facing gullies when the sun did make a brief appearance.
Snowpack Summary
Wind slabs are in open high alpine areas with localized winds. The upper snowpack is a 50 to 80 cm thick slab that bridges three weak layers in the mid-pack. Whumpfing and collapses were noted on the Mt. Kitchener slopes facing the highway last week yet natural activity has tapered off.
Weather Forecast
Monday will be Cloudy with sun and flurries, trace snow, high's of -3, light West winds, and 2000m freezing level. Tuesday will be flurries, possibly 10cm Tuesday into Wednesday, -7 to -1, Light SW winds gusting strong with 2100m freezing level. Wednesday will be sun and cloud, flurries, High -4 C, and light SW winds.
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Pockets of 10-30cm thick windslabs are in high elevation alpine ridgetops and crossloaded gullies. They are generally well bonded but pockets of instability exist. Propagations of 50-100m were noted last week but have subsided.