Lawinenlagebericht

Lizard-Flathead

Dec 3 – 4, 2022Avalanche Canada
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Archiviert · abgelaufen 4 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig

Kernpunkte

Expect to find more cohesive slab properties in steeper, more exposed terrain.

Small avalanches could potentially scrub down to the weak, sugary, lower snowpack creating large avalanches.

Lawinenprobleme

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2

    The recent storm snow lacks cohesion. Although in areas where the upper snowpack has settled into a slab or the wind has had an effect, you could find reactive slabs. It is possible small avalanches in the upper snowpack could scrub down to the facets, creating a larger then expected avalanche.

Avalanche Summary

Numerous reports of small loose dry avalanches (sluffing) within the recently fallen low-density surface snow. Explosive runs since the end of Wednesday's storm, have only produced a few slab avalanches up to size 2.

Confidence

Moderate

Snowpack Summary

50-80 cm of recent storm snow is overlaying a generally weak, sugary, faceted lower snowpack. With recent cold temperatures, surface snow remains low-density and is generally lacking much of a cohesive slab property. A widespread rain curst remains on the ground at treeline and below treeline.

At treeline, snowpack depths vary from 100-180 cm.

Weather Summary

Friday night

Cloudy with flurries. Light westerly winds, with moderate gusts. Alpine temperatures are around -15 to -20 C.

Saturday

Clearing skies with a mix of sun and cloud, ridgetop winds remain light from the west. While temperatures increase very slightly, still hovering around -15 C in the alpine.

Sunday

A mix of sun and clouds, isolated flurries, light to moderate easterly winds at ridgetop, and alpine temperatures around -10 C.

Monday

Cloudy with a trace amount of snow, ridgetop winds are generally light, with strong gusts. Alpine temperatures are around -15 C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Don't be too cavalier with decision making, storm slabs may remain sensitive to human triggering.
  • Be aware of the potential for larger than expected storm slabs due to the presence of buried surface hoar.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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