Lawinenlagebericht

Jasper

Feb 24 – 25, 2017Parks Canada
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Archiviert · abgelaufen 10 years ago

Lawinengefahr

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

Whumphs notes in our region. and remote skier triggering of avalanches continue amongst our nearest neighbors. The weak base will persist for sometime. Cautious decisions are key as initiating an avalanche  would be severe consequences.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–3
    Previous 25cm snow and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–3
    Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity and remote triggering of this weakness resulted in avalanches up to size 3 failing on the weak faceted snowpack. Caution is recommended.

Weather Forecast

Light snow now to Sunday. Friday will be light N winds and cold -20 temperatures. Saturday will be light Westerly and shifting Northerly Sunday. 

Snowpack Summary

Windslabs exist at TL and ALP. Winds now shifting light Northerly. A rain crust is below 1900m. A dense upper snowpack overlies a weak faceted base making for unpredictable dangerous avalanche conditions. Feb 10 SH layer may be 40cm deep yet its reactivity remains dormant.

Avalanche Summary

Skiers report whumphs in Whistler creek drainage on Thursday. On Feb 17 several size 2-3 avalanches were triggered by skiers from a significant distance away in the McCarib Pass area. Not much has changed in terms of the snowpack characteristics. 

Confidence

The weather pattern is stable

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