Bulletin d’avalanche

Waterton Lakes

Apr 20 – 21, 2016Parks Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

Fri
Sat
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
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Points saillants

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Expect continued occurrences of natural cornice failures, due to sustained high freezing levels.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

  • Wet Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    2–3
    The free water generated by snowmelt will make ground surfaces wet, possibly causing areas with existing glide cracks to avalanche to ground. These avalanches would be very large.

Weather Forecast

The hot sunny weather we've been enjoying will persist through Thursday.  On Friday, a weak upper trough arriving from the SW will give increasingly cloudy conditions and the rain/snow showers.  Total accumulations are forecast to be 10-15mm by Saturday evening, with freezing levels as low as 2000m.

Snowpack Summary

The snowpack is isothermal (punchy and wet to ground) and disappearing quick. Surface crusts may recover briefly after cool, clear nights, but will rapidly break down with the new day. North aspects in the alpine may be an exception, where surfaces can remain firm but winter-like through out the day. Most lower elevation lopes in the East are dry.

Avalanche Summary

No significant activity has been observed or reported recently.

Confidence

Régions couvertes