Lawinenlagebericht

Jasper

Feb 8 – 9, 2016Parks Canada
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Archiviert · abgelaufen 11 years ago

Lawinengefahr

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

Warming trend Monday and continuing through the week (our first taste of spring conditions) will shift the hazard quickly over the day. Not to worry, winter will return!

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–3
    New wind slab formed on lee and cross-loaded terrain. This is in addition to previous slabs found up to 30cm thick formed during the storm at the end of last week and sitting on a weak facetted interface.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–3
    35cm of storm snow from last week has formed a slab overlying a weak facetted snowpack. Field teams have found decomposed surface hoar with sudden planar test results in isolated locations at tree line. This is the key interface to assess.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2
    Expect any wet slide will have the potential to trigger preserved persistent slabs below. These slabs may take the season snowpack with it and will be notably destructive. South facing ice features could become very dangerous to an unaware climber

Weather Forecast

Progressive spring like conditions for the week in the forecast area. The sun will have a strong punch on any solar aspects for Monday and freezing levels will jump to over 3000ms by Tuesday with a strengthening diurnal cycle. Expected day time temperatures to get above 0 with some recovery overnight. Pack your skin wax, sunglasses and tanning oil! 

Snowpack Summary

New wind slab formed at tree-line and above on North-Easterly aspects below ridge crests and cross-loaded terrain. These slabs are loading a weak and facetted mid-pack that has a layer of concern down about 30 to 60cm at the interface between old facets and new snow. Isolated pockets of decomposing surface hoar at tree-line down 40cm.

Avalanche Summary

No new avalanches reported

Confidence

Timing or intensity of solar radiation is uncertain on Monday

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