Avalanche Forecast
Avalanche Bulletin - Little Yoho
The new snow remains reactive to human triggering especially in the East where the up slope storm dumped the most snow. Watch the weather inputs Saturday as more than 10 cm of new snow could easily increase the danger again.
Avalanche Problem 1: Loose Dry
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Be cautious of sluffing in steep terrain, particularly where the debris flows into terrain traps.
Avalanche Problem 2: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
In places where the storm snow is deepest, a soft slab has formed that remains reactive to human triggering. Monitor the storm snow amounts frequently, and use caution on larger slopes if a storm snow slab is present.
Travel and Terrain Advice
- The storm slab may be more sensitive to human triggering on solar aspects where it sits on sun crust
- Use caution in lee areas in the alpine and treeline. Storm snow is forming reactive slabs.
Avalanche Summary
Storm slab avalanches up to size 2 were noted today in Yoho, Loose moist, size 1 avalanches were also noted.
Snowpack Summary
5-30 cm of new snow from the past two days has fallen with an uneven distribution in the Little Yoho region. In areas with more storm snow the soft slab is poorly bonded to the melt-freeze crusts or old snow layers below. Below this the snowpack is stable and recent tests have not found any weaknesses. Low elevation snow is becoming isothermal.
Weather Forecast
Low elevation sites on the BC side of the Rockies have not had a good freeze for a few days, and this will continue through Satruday. Up to 10cm more snow at upper elevations from an upslope storm is expected on Saturday.
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Areas with deeper storm snow amounts are sluffing easily. This is a good time to avoid steep gullied terrain where even a small avalanche will gain mass quickly. Wind, warm temps or sunny breaks will also increase the likelihood of this problem.