Lawinenlagebericht

Jasper

Dec 12 – 13, 2021
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Archiviert · abgelaufen 5 years ago

Lawinengefahr

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

Kernpunkte

Loading happening at all elevations and aspects. Remain cautious as you travel in the back-country. Great riding can be found throughout the region.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1.5–2.5

    New snow and moderate to strong SW winds building new windslab in lee and crossloaded features. Watch for hollow sounds and cracking. Consider testing smaller slopes before committing to larger features; windslabs could initiate deep layers.

  • Loose Dry

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

    Heavy down flow observed in the Wilson region. Ice Climbers, avoid all overhead exposure.

  • Storm Slabs

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

    Most concerning BTL is at the transitions into open areas around Parkers Ridge, Sunwapta Pass. In the Maligne valley, the hazard will build with more snowfall over the week.

Weather Forecast

Overnight Saturday: Flurries. Accumulation: 7 cm. Alpine temperature: Low -15 °C. Ridge wind southwest: 20 km/h gusting to 55 km/h.

Sunday: Cloudy with sunny periods and isolated flurries. Precipitation: Trace. Alpine temperature: High -14 °C. Ridge wind southwest: 15 km/h gusting to 45 km/h.

Snowpack Summary

Parkway seeing between 10cm, and up to 20cm HST redistributed by mod SW winds at ridge top. Incremental loading at TL and BTL will create widespread variable soft slab. This will remain an active hazard and is most concerning as you transition into steep open areas, areas often paired with terrain traps. 

Avalanche Summary

Heavy snowfall and limited visibility reported by forecasting team in the Icefields today.

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Confidence

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