Lawinenlagebericht

Jasper

Jan 21 – 22, 2018Parks Canada
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Archiviert · abgelaufen 9 years ago

Lawinengefahr

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

Ski quality has improved with the new snow. Careful slope evaluation is essential right now to assess whether or not this new snow is sitting on a well preserved surface hoar layer in the top 15cm of the snowpack.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–1.5
    5-10cm of storm snow has been pushed into fresh windslabs. The concern is for areas where these slabs overlay a couple layers of surface hoar in the top 30cm of the snowpack. Field teams found touchy new slabs in the Hilda Creek drainage.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2
    There are 2 distinct surface hoar layers in the top 40cm of the snowpack. These layers are expected to become more reactive to natural and human triggers with the additional snow load leading into the weekend.

Weather Forecast

Light snowfall amounts, with only light scattered flurries expected, perhaps adding another 5-10cm. Alpine temperatures will continue to cool, dipping down to -15C. Winds decreasing and returning to the light range, gusting moderate from the Southwest.

Snowpack Summary

10cm of new snow has been pushed around by recent moderate SW winds, forming new windslabs in the alpine. This new snow covers a couple interesting surface hoar layers in the top portion of the snowpack - Jan 7 (5-10mm well preserved) and Jan 17 (2-5mm). These layers may present a touchy interface for new windslabs and storm snow.

Avalanche Summary

No new activity reported on the 2 tracked surface hoar layers.

Confidence

Due to the number of field observations

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