Bollettino valanghe

Jasper

Apr 20 – 21, 2013Parks Canada
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Archiviato · scaduto 13 years ago

Pericolo valanghe

Mon
Tue
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Good spring skiing can be found in the lower alpine and around treeline.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–3
    Isolated pockets of wind slab can be found on lee aspects in exposed alpine terrain near ridge crests. The likelihood of triggering avalanches increases when the day heats up or the sun comes out. Test the bond to the underlying crust.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3
    Cornices are large and a hazard by their sheer mass. They have the potential to trigger deeper layers if they fail big.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Sunny periods combined with warmer temperatures will increase this avalanche activity from steep solar aspects and gully features.

Weather Forecast

Overcast skies and flurries are expected  to bring light snow accumulations onto the Eastern slopes in the next 24 hours. Winds will be light to moderate from the Northeast and a clearing trend will begin later in the day. Monday will see slightly warmer temperatures and  scattered clouds with no precipitation to speak of.

Snowpack Summary

Spring conditions are mostly solid with up to 15cm of snow on the crust layer.  In the alpine, wind slabs exist on lee aspects near ridge tops.  Sun crusts are well developed on steep, solar aspects.  Overcast skies and cooler temperatures have kept the crusts intact even at lower elevations. 

Avalanche Summary

One avalanche was reported yesterday above the icefalls on the Athabasca glacier which originated from steep, cross loaded gullies in the high alpine. Cooler temperatures and no solar radiation due to cloud cover has reduced natural activity in the last few days.

Confidence

Regioni coperte