Boletín de aludes

Jasper

Feb 28 – Mar 1, 2014Parks Canada
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Archivado · caducó 13 years ago

Peligro de aludes

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

Cold daytime temps returning to the forecast area and the sunshine continues.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–2
    Carefully evaluate ridge top transitions and start zones where the winds have pressed the surface into a slab. This slab rests above a persistent facet layer 30cm to 45cm down.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1–3
    The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.

Weather Forecast

Clear skies and cold temperatures are expected to return overnight and day time temperatures could be in the negative high teens and remain like that through the weekend.  Snow is in the forecast but not likely to materialize until after the weekend.

Snowpack Summary

The snowpack is well settled with a very supportive mid-pack above 1,900m. Within this elevation range a concerning weakness can be found consisting of decomposing surface hoar and or facetted grains. This may be found 30-70cm down. Currently a failure is hard to trigger. Solar facing slopes below 1,900m will have a sun crust.

Avalanche Summary

No new natural avalanches were observed or reported.

Confidence

Regiones cubiertas