Avalanche Forecast
Avalanche Bulletin - Little Yoho
While avalanche activity is tapering, give wide margin to steep, open and planar features.
Avalanche Problem 1: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Avoid steep convexities or areas with a thin or variable snowpack.
- Use caution on open slopes and convex rolls
Avalanche Problem 2: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Hard wind slabs exist in the alpine lees, however recent cold temps will likely induce a sluggish/slow behavior if triggered.
Travel and Terrain Advice
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Avalanche Summary
No new avalanches were reported or observed today. Natural activity has been tapering off, but potential still exists.
Snowpack Summary
Windslabs are common in open areas in the alpine, however the cold temps are making them considerably less touchy. A deep slab overlies midpack weaknesses of surface hoar, crusts, and facets. The depth of these slabs varies from 75 cm to 150 cm. These layers have been producing very large avalanches over the past week.
Weather Forecast
Cold temperatures will persist in the forecast region for another few days. Expect lows in the -20 range. Very light precip is expected over the next 3 days, 2-5cm, which is not enough to effect the danger ratings. Wind velocity will be reasonable, generally light to moderate from the N-NW.
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A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.