Boletín de aludes

Jasper

Dec 24 – 25, 2014Parks Canada
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Archivado · caducó 12 years ago

Peligro de aludes

Wed
Thu
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
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Lo esencial

A moist pacific weather system will generate significant snowfall amounts through Tuesday night into Wednesday morning at higher elevations.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2
    Wind loading producing slabs on lee and cross loaded features at all elevations. Field teams today experienced cracking and whumphing in the new wind slab.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3
    This weak layer exists below a strong mid-pack at treeline and sub-alpine elevations. Field teams are still experiencing the occasional whumph from this layer. Surface slides or cornice collapse could trigger this deep persistent weakness.

Weather Forecast

Heavy snowfall warning in effect for the high mountain passes on Tuesday night with 15-20cm accompanied by strong South Westerly winds.

Snowpack Summary

Wind slab forming on lee alpine ridge lines. Large surface hoar crystals formed last week are being buried by new snow. This layer is more likely to be found on sheltered slopes at tree line and below The interface between the strong mid-pack and weaker basal facets is most susceptible to human triggering from shallow rocky areas.

Avalanche Summary

No avalanches observed today.

Confidence

Intensity of incoming weather systems is uncertain on Wednesday

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