Lawinenlagebericht

Kananaskis

Mar 25 – 26, 2017Alberta Parks
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Archiviert · abgelaufen 10 years ago

Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Kernpunkte

Conservative decision making is key right now.  Forecasters are still avoiding large overhead terrain that hasn't released.  When the sun comes out, stability can decrease quickly, especially on solar aspects. 

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    2–3
    Windslabs are being encountered in isolated areas at Treeline and more widespread in the Alpine. Ridgelines, gullies and crossloaded features should be treated with caution and in steeper terrain avoided.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    2–4
    Forecasters are still avoiding overhead hazard that has not yet released and being very conservative in bigger terrain.

Confidence

High - Due to the number and quality of field observations

Weather Forecast

A mix of sun and cloud with isolated flurries.Precipitation: Trace.Alpine temperature: High -7 °C.Ridge wind southwest: 20 km/h.Freezing level: 1600 metres.

Avalanche Summary

A few loose dry avalanches up to sz 1 were observed out of steep unskiable terrain on Saturday.  No new slab avalanche activity was observed.

Snowpack Summary

10-15cm overnight on Friday and another 4-5cm of snow throughout the day on Saturday combined with moderate westerly winds at higher elevations is creating new windslabs along ridgelines and in crossloaded features in alpine and treeline terrain.  These new windslabs are overlying a settled midpack that is overlying a very weak facetted base in most areas.  Thin weak areas are the likely areas where one may trigger the deeper instabilities and cause a large destructive avalanche.  Natural avalanche activity has began to taper off but many slopes are still primed for a large avalanche.  Use caution around terrain that has not yet released. 

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