Bulletin d’avalanche

Jasper

Apr 30 – May 1, 2014Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Fri
Sat
Alpin
4 · Fort
Limite forestière
4 · Fort
Sous la limite
4 · Fort
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Points saillants

A spring avalanche cycle continues on Thursday as warm conditions destabilizes the snowpack.  Stay out of avalanche terrain until conditions improve.  The Maligne Road is closed until Friday Morning.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Warm temperatures will weaken the large cornices that are out there.  Cornices will likely begin to fall Thursday afternoon.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    1–3
    Loose wet avalanches can be expected on sunny south facing aspects as temperatures rise during the day.

  • Wet Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    2–3
    Wet slab avalanches are expected to continue on Thursday.

Weather Forecast

Warm temperatures continue overnight with the freezing level around 2200 m.  Another warm day on Thursday, clouding over by late afternoon with a good chance of rain showers Thursday evening.  A cooling trend begins on Friday along with periods of snow with alpine accumulations of up to 10 cm.  Snowy cool conditions continue through the weekend.

Snowpack Summary

Freezing level to 3500 m with little overnight recovery of the melt freeze crust.  A widespread natural avalanche cycle will continue through Thursday.  Full depth avalanches are occurring on steep southerly aspects.

Avalanche Summary

A significant avalanche cycle is occurring at all elevations.  Most observations have been on southerly aspects but expect to see all aspects begin to perform on Thursday as freezing levels are to remain high and similar warm and sunny conditions are expected.

Confidence

Timing or intensity of solar radiation is uncertain on Thursday

Régions couvertes