Bulletin d’avalanche

Kananaskis

Apr 6, 2018Alberta Parks
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Archivé · expiré 8 years ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

New snow is forecast to arrive over the weekend are temps are forecast to slowy rise.  Pay attention to localized winds as lots of snow is available for transport.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2.5
    Wind slabs are being encountered along ridgelines in alpine terrain.  These slabs do not extend far downslope but are present in immediate lees. Use caution at the entrances to runs. 

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2.5
    Cornices are large and looming over slopes at the moment. Keep an eye on these if the sun comes out. 

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2.5
    The March 15th melt-freeze crust, buried 30-50cm on solar aspects, could be an issue on bigger slopes, particularly in the Alpine. Evaluate the snowpack for the presence/absence of this problem layer before committing to a terrain feature.

Confidence

High -

Weather Forecast

A mix of sun and cloud.Precipitation: Nil.Alpine temperature: High -6 °C.Ridge wind southwest: 15 km/h.Freezing level: 1700 metres.

Avalanche Summary

Forecaster were able to trigger a large cornice collapse while travelling along a ridge on Wednesday indicating that they are large and reactive to skiers.  Use caution around these beasts.  Otherwise, only loose dry avalanches up to sz 1 from steep unskiable terrain were observed.

Snowpack Summary

Surface facetting continues in the upper snowpack due to the cold temperatures.  This is certainly helping the ski quality!  Isolated windslabs are being encountered along ridgelines but do not extend far downslope.  Cornices are very large for this time of year.  Also the March 15th crust is down 40-60cm on solar aspects up to peaks and the bond with the overlying snow is variable.  Dig down and test this layer....A new thin melt freeze crust formed on solar aspects on Thursday that may make the skiing a little more...hooky and challenging.

Régions couvertes