Boletín de aludes

Jasper

Apr 5 – 6, 2016Parks Canada
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Archivado · caducó 10 years ago

Peligro de aludes

Thu
Fri
Alta montaña
Sin grado
Límite del bosque
Sin grado
Bajo el límite
Sin grado
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Lo esencial

Dust on crust and moderate west winds for Wednesday. Keep to slopes where the crust maintains strength enough to hold the rider.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    New surface windslab developing with moderate to strong S-Swly winds. Look for these on northerly aspects at ridge top and open areas.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Cornice failures are becoming more frequent lately. New snow and moderate West winds will increase size.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–4
    Cooling temperatures will reduce the likelihood of triggering this problem. Shallow areas are likely trigger spots.

Weather Forecast

Cloudy with scattered flurries with forecasted accumulation of 4cm. Alpine temperatures expected near +1 C with gusty moderate west winds keeping everything cool.

Snowpack Summary

Cold temps developing a strong surface crust (20cm to 3cm at 2100m) at tree-line and below. Isothermal snowpack with that crust holding up through the day Tues. making travel easy. Persistent slab, 30 to 70cms thick, reacting to compression tests on facets in the low moderate range. Expect to see this more reactive underfoot as crust breaks down.

Avalanche Summary

New and old activity to size 2.5, mostly on solar aspects observed by field teams today along the Icefields Parkway. Mix of loose wet and slab avalanches observed.

Confidence

Regiones cubiertas