Lawinenlagebericht

Jasper

Dec 20 – 21, 2014Parks Canada
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Archiviert · abgelaufen 12 years ago

Lawinengefahr

Sat
Sun
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

New snow will be landing on a large surface hoar layer.  This will be a weak layer and freshly wind loaded slopes should be avoided.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–2
    Approach loaded, cross-loaded and re-loaded lee features with caution.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–3
    These deep persistent slabs at tree line and sheltered alpine slopes may be triggered from shallow areas within the snowpack.

Weather Forecast

Light precipitation through the weekend with a little more on Sunday.  Light SW winds at treeline increasing to moderate in the alpine.  Mild temperatures with freezing levels staying well below treeline.

Snowpack Summary

Surface Hoar continues to form. A strong mid-pack overlies approximately 20-40cm of facets. Isolated wind slabs still exist in open areas at tree line and alpine elevations. The interface between the mid-pack and facets is most susceptible to human triggering from shallow areas.

Avalanche Summary

No observations in the Marmot area today.  No other avalanches reported. There is past evidence of large deep slides in wind loaded features that released in the last cycle.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Sunday

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