Boletín de aludes

Waterton Lakes

Jan 14 – 17, 2014Parks Canada
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Archivado · caducó 13 years ago

Peligro de aludes

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

Warm temperatures and sunny days during this chinook may reduce stability on some slopes. Watch for overhead cornice concerns.  The recent wind slabs need to be carefully evaluated as there is great variability in location and thickness. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Open terrain near ridge crests are likely spots to find recent wind slabs. Use your poles and probe to help detect signs of instability.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–2
    More likely areas where the slab could be triggered are in  steep unsupported terrain.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    2–3
    In shallow snowpack areas there is a possibility that the deeper instabilities could be triggered. Our growing snowpack and milder temperatures are helping to reduce the chance that this layer could be triggered in most areas.

Weather Forecast

The strong westerly flow kicks in again early Tuesday. Little in the way of snowfall is expected. Freezing level may rise to 1700 meters later in the week. With the warm temperatures and sunny skies watch for terrain under recently loaded cornices.

Snowpack Summary

25cm of snow over the weekend and into Monday with a strong westerly flow have created storm slab and wind slabs. Triggering is possible in steep unsupported terrain. Deeper instabilities that we have been tracking previously are showing signs of been less of an issue in most areas with improved bridging above. Watch suspect shallower areas.

Avalanche Summary

During the storm Friday and Saturday avalanches to size 2.5 have been observed from north and east aspects initiated from steep terrain above. Cornice development during this warm storm has been significant. 

Confidence

Regiones cubiertas