Boletín de aludes

Jasper

Dec 8 – 9, 2014Parks Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

A storm is approaching and is forecast to hit the region on tuesday and intensify into Wednesday.  Conditions will deteriorate rapidly. 

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–3
    These slabs are found on exposed slopes and produced moderate to hard test results with failures in the facet layer near the bottom of the snowpack.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2
    Storm snow has evolved into a persistent slab mainly around treeline and sheltered alpine slopes. Widespread whumphing in open treeline areas.  Propagation from  whumphing is possible on steep unsupported slopes.

Weather Forecast

Snow will begin Monday evening becoming heavy by Wednesday with accumulations of 30 cm possible.  Winds will increase into the moderate range.  Temperatures will be warm with the freezing level reaching to 2200 m on Wednesday.  Precipitation will likely fall as rain at lower elevations.

Snowpack Summary

Warm temps are reaching into the alpine and are promoting settlement of last week's storm snow.  Isolated windslab can be found in exposed areas in the alpine. The main concern is the interface between the settled storm snow and several crusts near the bottom of the snowpack. This interface is producing widespread whumphing at treeline.

Avalanche Summary

No field patrols today.

Confidence

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

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