Boletín de aludes

Banff Yoho Kootenay

Mar 12 – 13, 2015Parks Canada
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Archivado · caducó 12 years ago

Peligro de aludes

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

In eastern areas of the forecast region (Banff area), the danger rating will be higher as repeated days of warm weather with little overnight recovery is taking its toll on the snowpack. Temperatures have been cooler along the continental divide.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    5 - 10 cm's of new snow has been blown by strong west winds into small windslabs in the alpine. In some areas this covers isolated areas of older windslab that has been reactive to human triggering over the past week.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2
    The warm temperatures will create wet sluffs and rockfall on south facing slopes and gullies at and below treeline. Ice climbers should avoid this terrain, and instead search for north facing climbs where the cold temperatures will keep things solid.

  • Deep Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3
    The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may waken up with the warm temperatures (especially east of the divide where temperatures have been warmer)

Weather Forecast

Friday should be partly cloudy with a weak freeze in the AM but some clouds to keep the solar radiation at bay. Forecasts are calling for a short but intense storm starting Saturday around noon which should deposit 20 - 30 cm's of new snow above 2000m with rain below. Alpine winds will be moderate to strong from the W/ SW throughout the period.

Snowpack Summary

There is a wide range of conditions from east to west at this time. Eastern areas (Banff) are subject to the warm temperatures which are effecting the snowpack on S and W aspects. Further west the temperatures have remained cool enough that treeline and alpine snowpacks have remained solid and new snow has made fresh windslabs in the alpine.

Avalanche Summary

No new avalanches observed or reported today.

Confidence

Timing of incoming weather systems is uncertain on Saturday

Regiones cubiertas