Boletín de aludes

Jasper

Nov 23 – 24, 2012Parks Canada
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Archivado · caducó 14 years ago

Peligro de aludes

Fri
Sat
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Be aware of early season hazards that are buried by the recent snowfalls.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    This layer produced several avalanches from size 2 -3. They were limited to lee and cross loaded features but a wide range of aspects in the alpine.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–3
    A variety of old surface layer shears can be found in field tests. No avalanches have been observed on these layers. A test profile on Parker south on Wednesday showed moderate sudden planar results.

Weather Forecast

Another frontal system is expected to bring around 20cm of snow accompanied with steady moderate SW winds to the icefields area. Jasper townsite is expected to receive only a few centimeters on Friday night.

Snowpack Summary

Snowpack on a south aspect at treeline is 60cm with facets between two crusts and a moist layer at the ground.  Moderate tests showed a weakness in the facets just above the november 6th crust.

Avalanche Summary

Several sz 2 -3 slab avalanches in high alpine on cross loaded gully and terrain features on North through West to Southwest aspects. Numerous loose snow avalanches originating in rock bands on Westerly aspects from 2600 - 2900meters.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

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