Bulletin d’avalanche

Jasper

Jan 31 – Feb 1, 2016Parks Canada
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Archivé · expiré 11 years ago

Danger d’avalanche

Sun
Mon
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Conservative route decisions will be the key the next little while. Give this new snow  time to  stabilize.

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    30 cm of storm snow from Thursday continues to build into a slab overlying a weak facetted snowpack or decomposed surface hoar layer. It will continue to evolve the next few days.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Triggering is very likely in steep terrain. Thursdays' new snow added to this problem in many locations.

Weather Forecast

Will be very light snow on Sunday. -9 to -15, and light to calm winds. Sun, clouds, and cool temperatures after that. Little change is expected now until Tuesday.

Snowpack Summary

Up to 30 cm fell in the Icefields area on Thursday with moderate SW winds building touchy soft slabs on lee slopes at tree line and above. It rained at lower elevations making for a potential rain crust surface. This new snow rests on either a decomposed surface hoar layer that has formed the last few weeks or a facetted unconsolidated snowpack.

Avalanche Summary

Saturday natural activity noted up to size 3 running relatively far on a variety of aspects mainly in alpine. Explosive work was mixed results with sluff's to soft slabs up to size 2.5 on the range of aspects and elevations. On Friday, a skier accidental at Parkers Ridge, size 3, 1 involvement, no injuries. Depth 10-240cm x 400m x 400m.

Confidence

Régions couvertes