Avalanche forecast

Kootenay Boundary

Feb 3, 2019Avalanche Canada
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Archived · expired 8 years ago

Avalanche danger

Mon
Tue
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Recent new snow will take a few days to settle and bond. The temperature is forecast to drop as cold air comes in from the north.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2
    40-60 cm of snow sits above crusts and a weak layer of surface hoar. The surface hoar is likely most pronounced in shaded and sheltered areas at treeline.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    New snow arrived with moderate to strong southwesterly wind on Friday. Deepest deposits will be found in alpine and tree line lee terrain.

Confidence

Moderate -

Weather Forecast

SATURDAY Night: Mainly cloudy, light southwest wind, alpine temperature -12 C.SUNDAY: Mainly cloudy with scattered flurries, light east wind, alpine temperature -13 C.MONDAY: Mix of sun and cloud, light east wind, alpine temperature -19 C.TUESDAY: Mix of sun and cloud, light east wind, alpine temperature -12 C.

Avalanche Summary

Reports from Saturday include several natural size 1.5-2 storm slab avalanches and explosives triggered size 2-2.5 storm slab avalanches on southerly and northerly aspects up to 2200m.

Snowpack Summary

10-30 cm of new snow sits on variety of snow surfaces, which may include wind crust in wind exposed areas, sun crust on solar aspects to mountain top and weak feathery surface hoar in sheltered and shady areas. 40-60 cm below the snow surface, expect to find another crust on south aspects and another layer of feathery surface hoar crystals in sheltered and shaded areas. This deeper layer of surface hoar may be most reactive at treeline elevations on shady aspects. The remainder of the snowpack is generally well-settled and strong in most locations.

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