Lawinenlagebericht

Banff Yoho Kootenay

Mar 2 – 3, 2012Parks Canada
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Archiviert · abgelaufen 15 years ago

Lawinengefahr

Fri
Sat
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig
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Kernpunkte

Not much has changed in the last 24 hours; light winds, a skiff of snow. This will change come the weekend. We may get up to 20cm of snow accompanied by west winds. This should wake up the nasty Valentine layer and we expect a natural cycle Saturday.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    Moderate winds this week have also created thin, but stiffer wind slab conditions 25-35 cm deep on ridgetop lee terrain. These have been seen to step down to the Valentine layer.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    2–3
    Snow depths over the Valentines surface hoar and suncrust on steep solar aspects range from 20cm E of the Divide, to 45+cm at Sunshine and Yoho. Yesterday a large slide off the top of Fairview failed across the entire bowl on this layer. Impressive!

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    Recent trips east of the Divide have found a shallow, weak snowpack. Tests done showed sudden collapse results on the basal facets. It is still possible to trigger the entire slope from shallow, thinly covered areas.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

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