Bulletin d’avalanche

Kananaskis

Apr 7 – 8, 2013Alberta Parks
Voir sur la carte
Archivé · expiré 13 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

Fresh storm slabs at treeline and above. A skier triggered avalanche occurred today on Tent Ridge in a wind-loaded feature. Photo on Facebook. Cool temperatures on Monday should keep the crusts "locked up" at lower elevations.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–5
    Cornices are large and sagging. Recent cornice failures have been triggering slabs on the underlying slopes. Be aware of overhead exposure especially during times of intense solar radiation or rain.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–4
    Storm slabs up to 40cm thick are present in lee and cross-loaded features at higher elevations. A size 2.0 skier accidental slab avalanche occurred on Tent Ridge today.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–5
    As crusts melt with solar radiation, daytime heating and/or rain, wet avalanches are occurring. Be especially cautious in areas that have had little or no overnight freeze. Many slides are failing on the ground and involve the entire snowpack.

Confidence

Fair - Freezing levels are uncertain

Weather Forecast

Flurries will continue overnight and into tomorrow, but accumulations should be less than 10cm. Winds are expected to be light from the East on Monday and temperatures will be cool.

Avalanche Summary

The past several days have seen wet avalanches (both slab and loose) up to size 2.0, especially at lower elevations. Today a skier accidental slab size 2.0 was triggered in the North Bowl of Tent Ridge. This occurred on a steep E aspect at 2350m and was approximately 50cm deep at its deepest point in a wind loaded feature. There appeared to be at least one partial burial, but we can not confirm this. All parties are accounted for.

Snowpack Summary

9cm of new snow and up to 25cm of recent storm snow on high altitude N aspects with light rain at lower elevations. Storm slabs between 20 and 40cm thick are present in lee and cross-loaded terrain at treeline and above. Otherwise crusts are dominant on all but high elevation N aspects. Cornices remain large and sagging.

Régions couvertes