Boletín de aludes

Jasper

Nov 26 – 27, 2020
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Archivado · caducó 6 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

An early season refresh of low density new snow has hidden any lingering, exposed hazards. Excellent riding can be found throughout the forecast region.

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Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2.5

    New snow and strong winds have created freshly formed wind slabs in immediate lee's.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–3

    Pockets of previous wind deposited snow overlies the Nov 4 rain crust. Test results are mixed on this layer but appears to be becoming more reactive with increased loads and continued faceting

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–1.5

    New HST lingering on cliff sides and ice climbs. Ice Climbers be wary of this over head hazard.

Weather Forecast

Alpine temps expected to remain steady (-10 to -15) with intermitted, light flurries over the next couple of days. Moderate sw winds at tree line (TL). A further 20mm (~10cm)  forecast, beginning Friday afternoon, and tampering off by Saturday am. Excellent skiing can be found at TL and, in sheltered areas through the forecast region. 

Snowpack Summary

The snowpack is highly variable depending on location. Height of snow at Parkers is ~100cm at treeline. The Nov.4 crust found up to 2600m, and is ~70cm deep. Test results on this crust have shown a mix of mod sudden/resistent planar results. Continued wind slab develop on N and E aspects ridge top down into treeline. Basal layers continue to weaken

Avalanche Summary

Avalanche control at Parkers Ridge today produced numerous, loose dry slides and a very healthy sz 2 that swept across the road. Dimensions of the slab, 100m x 200m x 60-100cms depth. Continued, moderate loading from steady sw winds and light HST observed after mid-day.

Confidence

Regiones cubiertas