Bulletin d’avalanche

Kananaskis

Feb 12 – 13, 2013Alberta Parks
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Archivé · expiré 14 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Up to 5cm of new snow overnight with winds spiking at 125km/h out of the West. Watch for fresh wind slabs in lee and cross-loaded features, and be aware of the potential for higher danger levels if more snow arrives than is forecasted.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–4
    Between 0 and 20cm of recent snow currently overlies a hard wind slab in alpine and treeline areas. Shallow snowpack areas and steep convex features are potential triggering spots for this buried wind slab.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Sluffing from steep terrain could occur on Wednesday if the forecasted winds and snow arrive. Be cautious in and below steep lee and cross-loaded terrain, especially below ridge-crests.

Confidence

Fair - Forecast snowfall amounts are uncertain

Weather Forecast

Winds will spike at 125km/h out of the west overnight. As much as 5cm of snow is expected by Wednesday morning with temperatures cooling to -15 degrees.

Avalanche Summary

Nothing new.

Snowpack Summary

Trace amount of snow overnight. 0 to 20cm of relatively low density snow sits on a very hard wind slab. A hard compression test was observed which failed beneath the dense wind slab. Snowpack at lower elevations is weak and facetted.

Régions couvertes