Bollettino valanghe

Jasper

Apr 7 – 8, 2016Parks Canada
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Archiviato · scaduto 10 years ago

Pericolo valanghe

Sat
Sun
Alta quota
Senza grado
Limite del bosco
Senza grado
Sotto il limite
Senza grado

In sintesi

Expecting the avalanche hazard to rise rapidly on Friday on all elevations and aspects as freezing level climbs to 3500 m and plenty of sun.  Avalanche control planned for Icefields Parkway starting at 16:30 hrs on Friday.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2
    Large hanging cornices will weaken with rising temperatures. Use caution traveling below or near them.
  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely - Certain
    Dimensione
    1–2
    The freezing level is rising to 3500 m tomorrow.  We are expecting to see loose wet avalanches on most slopes.
  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    2–4
    The forecasted hot sunny weather on Friday will be a trigger for this problem on all aspects and elevations.

Weather Forecast

Freezing level dipping to 1500 m tonight then soaring to 3500 m by noon Friday with clear skies.  Good crust recovery forecasted Friday night  with moderating temperatures through the weekend could make for good corn skiing.

Snowpack Summary

A melt freeze crust will form tonight but will deteriorate rapidly on all aspects and elevations on Friday afternoon as temperatures spike and with intense solar radiation.  A persistent slab, 30 to 70cms thick, will be of greatest concern on Northerly aspects. Pockets of thin slab on lee aspects. 

Avalanche Summary

Large (sz 3) slab avalanches on North alpine aspects starting to be seen.  Old slab and loose wet avalanche activity to size 2.5, mostly on solar aspects observed by field teams along the Icefields Parkway on Wednesday.

Confidence

Regioni coperte