Lawinenlagebericht

Jasper

Mar 19 – 20, 2021
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Archiviert · abgelaufen 6 years ago

Lawinengefahr

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

With cooling trend and small amounts of precipitation in the forecast we are facing generally safe avalanche conditions.Be mindful of the potential for low probability high consequence scenario.

Lawinenprobleme

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1.5–3

    Cornices can be extremely destructive alone or, may initiate deeper layers in the snowpack below.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    1–3

    More activity noted at this layer, mostly initiated by large loads (cornices) in steep terrain.

  • Loose Wet

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

    Varied sensitivity on solar aspects, likelihood increases on the steepest slopes. It may be possible to trigger deeper instabilities once initiated.

Snowpack Summary

Up to 5cm of new snow becoming moist on solar aspects and creating thin slabs in ALP lees. Warm temps and high solar input have created sun crust on solar aspects TL and below. Snowpack becoming isothermal 1700m and below on all aspects. Generally strong mid-pack with exception in shallow areas.

Avalanche Summary

No new avalanche activity observed or reported today, however, there have been reports of sporadic large avalanches in isolated ALP features in the last couple weeks. These slides are believed to be triggered by large cornice failures and ran in heavily wind loaded features with wide propagation. Beware of low probability, high consequence scenario

Confidence

Weather Forecast

Saturday: Cloudy with sunny periods and isolated flurries. Accumulation: 4 cm. Alpine: High -6 °C. Ridge wind west: 20 km/h gusting to 55 km/h. Freezing level: 1400 metres.Sunday: Cloudy with sunny periods and isolated flurries. Precipitation: Trace. Alpine: High -9 °C. Ridge wind southwest: 15 km/h. Freezing level at valley bottom.

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