Bollettino valanghe

Jasper

Jan 26 – 27, 2016Parks Canada
Vedi sulla mappa
Archiviato · scaduto 11 years ago

Pericolo valanghe

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

In sintesi

As the hazard increases be prepared to give any avalanche terrain a wide berth as slides could be expected to travel fast and further then expected.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    Previously buried windslabs will likely get overloaded quickly in any area where transport is happening in realtime. Users have to be very cautious with overhead hazards when traveling in or near avalanche terrain.

  • Loose Dry

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2
    Loose dry avalanches should be expected in steep terrain, and may entrain significant amounts of snow in gully features.

Weather Forecast

Weather models have all come to an agreement, it's still winter. As such, predictions of upwards of 15-25cms are expected in the forecast region starting tuesday afternoon and into the weekend. This is accompanied by transport speed winds (20+ kph). Only time will tell but this could significantly overload the snowpack.

Snowpack Summary

So much will depend on the forecasted snow coming Tuesday evening. Any new snow will be sitting and/or transported onto weak sandwiched wind slab layers on the top 25 cms of the existing snowpack. These are moderately reactive on a already weaken, faceted snowpack at exposed tree line and alpine features.

Avalanche Summary

On Sunday, west of Jasper townsite and just outside the boundary of the park, a size 2 skier accidental happened in the afternoon. In an established slide path, a pair of skiers were crossing the path when they heard a whumph. One skier was able to ski to the side but a second skier was caught and rode it out for 70ms. Average crown depth 75cms.

Confidence

Intensity of incoming weather systems is uncertain

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