Boletín de aludes

Jasper

Dec 23 – 24, 2012Parks Canada
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Archivado · caducó 14 years ago

Peligro de aludes

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

Ice climbers be aware of slopes where loose avalanches and terrain traps could have significant consequences. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–3
    Thursday's 10 cm of snow has buried the wind slabs which formed earlier this week. Winds have shifted from S to N. Watch for reverse loading patterns.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely
    Tamaño
    2–3
    The strong mid-pack above this weakness is slowly loosing its strength. This issue is more prevalent in shallow snow pack areas being likely trigger spots.

Weather Forecast

A weak low may pass through area Sunday into Monday but the Arctic air will continue to dominate with cold temperatures, sunny breaks, light flurries, and light N winds. A possible temperature inversion may develop over the next few days.

Snowpack Summary

Thursday's 10 cm of new snow in the Icefields area has buried previous wind slabs on NE aspects, tree line and above. The mid-pack remains supportive however it is quickly loosing strength in shallow locations.

Avalanche Summary

Friday's avalanche control work at the Icefields released several loose size 2 avalanches in thin steep snowpack areas below treeline. Natural avalanches have been limited to similar characteristics, steep, rocky, thin areas creating loose avalanches.

Confidence

The weather pattern is stable

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