Boletín de aludes

Jasper

Feb 14 – 15, 2021
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Archivado · caducó 6 years ago

Peligro de aludes

Mon
Tue
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil

Lo esencial

The facet-fest continues, and the snow pack continues to loose strength.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2

    Recent windslab activity has been noted in high elevation windloaded features. It seems to require a large trigger such as cornice failures to initiate or potentially a shallow location where a skiers weight may be enough.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1.5–2.5

    Cold temperatures are making cornices brittle and prone to failure. Keep a healthy distance away both when traveling below, or near corniced features.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2

    Surface snow continues to lose cohesion and structure making specific areas susceptible to light triggers like direct solar influence, and excitable riders. Sluff awareness and management will be very important in steep and/or confined lines.

Weather Forecast

Sunday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: High -15 °C. Ridge wind southwest: 10 km/h.

Monday: A mix of sun and cloud. Precipitation: Nil. Alpine temperature: Low -17 °C, High -9 °C. Ridge wind west: 10 km/h.

Snowpack Summary

The cold weather continues to promote facetting of the upper 40cm. The mid-pack is showing signs of losing strength with the prolonged arctic influence, especially where it is shallow. Widespread wind effect in the alpine and upper tree line.

Avalanche Summary

Road patrol on Feb 13 observed numerous Natural Loose Dry Avalanches up to size 1.5, starting steep terrain, but running the distance in terrain over 30 deg. One size 2 serac triggered wind slab, up to a meter deep, was also directly observed.

Confidence

Regiones cubiertas