Boletín de aludes

Jasper

Jan 4 – 5, 2019Parks Canada
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Archivado · caducó 8 years ago

Peligro de aludes

Sat
Sun
Alta montaña
5 · Muy fuerte
Límite del bosque
5 · Muy fuerte
Bajo el límite
5 · Muy fuerte
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Lo esencial

Exceptional amounts of snow is falling over the Bulletin Region. Avoid all Avalanche Terrain.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Very Likely
    Tamaño
    1–3
    Up to 45cm of fresh snow, warm temperatures and moderate to strong SW winds are creating widespread touchy windslabs and storm slabs.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely - Very Likely
    Tamaño
    1.5–3.5
    The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive in shallow snowpack areas recently.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1.5–4
    The base of the snowpack is weak and facetted. In shallow snowpack areas the new snow will likely overload this weakness.

Weather Forecast

An ongoing storm is bringing heavy snowfall and strong winds to our area. Up to 45cm of snow has already fallen and 25cm more snow with moderate to strong winds are still forecast through Friday. Temperatures will stay warm around -5C to -8C.  A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Up to 45cm of snow has fallen along the 93N. Moderate-strong SW winds have built fresh windslabs in open terrain and storm slabs in sheltered areas. Expect natural avalanche activity with the rapid loading. The Dec. 11th layer (surface hoar and facets) persists down 60-150cm, and continues to produce avalanches in shallow snowpack areas.

Avalanche Summary

Upper avalanche start zones were obscured with falling snow but we expect widespread natural avalanche activity to be occurring. Yesterday skier triggered and several natural slabs were noted on slopes with shallower snowpack around the Columbia Icefields.

Confidence

Forecast snowfall amounts are uncertain on Friday

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