Bulletin d’avalanche

Kananaskis

Apr 12 – 13, 2017Alberta Parks
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Archivé · expiré 9 years ago

Danger d’avalanche

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

Hazard levels may be higher if solar radiation or freezing levels are higher than forecasted. The snowpack is still not in full "spring" mode. Despite the MODERATE rating, forecasters continue to treat large Alpine features conservatively.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Thin wind slabs are found in the Alpine, and these may now be on all aspects due to recent reverse wind loading.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    Any sunny breaks will bring intense solar radiation. Be cautious of the terrain you are on or under when these conditions are present.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3
    Loading on this layer continues as the flurries and squalls pass through. Alpine areas that have not seen the warmth yet are the most suspect. Human-triggering from shallow snowpack areas is also a concern.

Confidence

Moderate - Timing or intensity of solar radiation is uncertain

Weather Forecast

Thursday should be cloudy with sunny periods and isolated flurries. Winds will be out of the SW at 25 km/h gusting to 50 km/h. The freezing level will reach 2200m, and during any sunny breaks the solar radiation will be intense. Convective flurries with sunny breaks should continue into the weekend.

Avalanche Summary

No avalanches were observed or reported today, but observations were very limited.

Snowpack Summary

Between 0 and 5cm of new snow at Treeline in the past 25hrs. Isolated pockets of wind slab have been observed in the Alpine on lee and cross-loaded terrain features. The snowpack is settling with the recent warm temperatures. Buried crust are found on all aspects up to 2300m, with numerous layers of crust on solar aspects up to at least 2700m. Moist snow at lower elevations by mid-afternoon. Basal layers remain weak and are still a concern in larger terrain features.

Régions couvertes