Boletín de aludes

Jasper

Feb 8 – 9, 2016Parks Canada
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Archivado · caducó 11 years ago

Peligro de aludes

Mon
Tue
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
2 · Moderado
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Lo esencial

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!

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    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

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    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

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    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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