Bulletin d’avalanche

Kananaskis

Mar 10 – 11, 2014Alberta Parks
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Archivé · expiré 13 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

Conditions are still ripe for human triggering. Deeply buried weak layers could produce large avalanches. Conservative route selection is strongly recommended. Solar radiation will also be a factor over the next few days.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Previous snowfall and recent strong SW winds have formed wind slabs between 20 and 40cm thick on lee aspects in alpine and treeline terrain.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–5
    This persistent weak layer is buried 80 to 100cm at treeline and is sensitive to human triggering. Numerous avalanches, both human and naturally-triggered, have occurred on this layer in the past few days.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Mostly sunny skies on Tuesday will allow solar aspects to become moist, especially in the afternoon.

Confidence

Good

Weather Forecast

Tuesday will bring a mix of sun and cloud with alpine temperatures near -5 degrees. Winds will be moderate from the west and no new precipitation is expected. Although freezing levels are only expected to climb to 1300m, solar radiation will be intense, especially in the afternoon.

Avalanche Summary

One new size 1.5 naturally triggered slab was observed today at 2200m on a NW aspect. A widespread natural avalanche cycle has occurred over the past few days up to size 3.0 on all aspects and all elevations.

Snowpack Summary

Snowpack is settling rapidly with warm temps. Rain crust found below 1900m from rain an d wet snow event over the weekend. Solar aspects are moist in the afternoon. Storm slabs at treeline are between 20 and 40cm thick and continue to be reactive in the easy to moderate range. The Feb 10th persistent weak layer is buried 80 to 100cm is is responsible for a fairly widespread avalanche cycle up to size 2.5 over the past few days.

Régions couvertes