Lawinenlagebericht

Jasper

Apr 7 – 8, 2016Parks Canada
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Archiviert · abgelaufen 10 years ago

Lawinengefahr

Sat
Sun
Hochgebirge
Keine Stufe
Waldgrenze
Keine Stufe
Unterhalb
Keine Stufe

Kernpunkte

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.

Lawinenprobleme

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2
    Large hanging cornices will weaken with rising temperatures. Use caution traveling below or near them.
  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Very Likely - Certain
    Größe
    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

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Very Likely
    Größe
    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

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