Lawinenlagebericht

Purcells

Dec 14 – 15, 2012Avalanche Canada
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Archiviert · abgelaufen 14 years ago

Lawinengefahr

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

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–4
    Thin new windslabs have developed in the alpine and at treeline.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    2–5
    Buried surface hoar layers continue to give results in snow pit tests. This layer may be triggered from thin weak spots on or adjacent to unsupported terrain features.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely
    Größe
    3–7
    Avalanche activity on the deeply buried November rain crust is un-likely without new loading or a rapid rise in temperature. Avalanches that do release on this layer will be large and destructive.

Snowpack Summary

Some new surface hoar has been reported overnight. Thin windslabs have developed in the alpine and at treeline in exposed terrain. Some loose snow sluffing may be experienced in steep terrain. Snow pit test results continue to show weak layers of surface hoar that was buried during mid and late November, however we have not seen any activity on these layers recently. The early season rain crust is another layer that continues to show results in tests, but has not been active.

Confidence

Fair - Intensity of incoming weather is uncertain on Monday

Weather Forecast

Overnight and Saturday: A ridge of High pressure is forecast to remain in the region overnight. The next system should move into the region on Saturday morning bringing 5-10 cms of light snow to all elevations combined with strong Southwest winds.Sunday: Continued light snow at all elevations with moderate Westerly winds at higher elevations.Monday: A strong frontal system is forecast to move in from the coast. Expect strong Southerly winds and moderate precipitation amounts.

Avalanche Summary

Some thin soft slab avalanches up to size 1.5 were reported from explosive control work with large charges (heavy load) near Golden.

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