Boletín de aludes

Jasper

Feb 4 – 5, 2017Parks Canada
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Archivado · caducó 10 years ago

Peligro de aludes

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

An upslope storm will persist through the weekend.  Already sensitive slopes will be reverse loading with moderate NE winds.  Best to wait for storm to pass before committing to any big objectives.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–3
    New snow is reverse loading on weak surface facets or surface hoar. These new slabs will bond poorly.  Last week's slab from M to S winds are still suspect.  Big open features and cross-loaded gulleys should be avoided until storm passes.

  • Loose Dry

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    Faceted snow  on ledges and above ice climbs can be easily triggered and can grow quickly by entraining surrounding snow especially in gulley features.

Weather Forecast

Light snow is expected to continue through the weekend with moderate NE winds and cold temperatures.  We could possibly get 15 cm by Monday.

Snowpack Summary

New snow on the way will be reverse loading lee slopes with moderate NE winds. Surface faceting and surface hoar will be buried creating a second weak interface in the upper snowpack. Poor bonding between these layers is expected. Below is a weak and faceted mid-pack with depth hoar to ground.

Avalanche Summary

No new avalanche observations or reports today.

Confidence

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

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