Bulletin d’avalanche

Jasper

Dec 5 – 6, 2019Parks Canada
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Archivé · expiré 7 years ago

Danger d’avalanche

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

Points saillants

Up to 30cm of new snow has fallen in the Columbia Icefields area. There could be some good skiing out there! 

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2

    New soft windslabs have formed in the lee areas from the storm that just pushed through. The distribution at treeline is more isolated.

Snowpack Summary

Up to 30cm of new snow in the Columbia Icefields area fell on to a mix of surfaces; surface facets, surface hoar, and previous wind slab and/or hard wind pressed surfaces. The moderate winds built soft wind slabs at ridge tops. Oct. and Nov. crusts are preserved in the mid and lower snowpack and both seem have a good bond to the overlaying snow.

Avalanche Summary

Avalanche control work in the Parker Ridge area today produced little results, only 2 soft size 2 wind slabs were triggered from explosives. On our drive back to town we had decent visibility and observed no new natural avalanches.

Confidence

Due to the number of field observations

Weather Forecast

More snow on the horizon.

Thursday: Sun and cloud with possible isolated flurries. High -10 C. Light SW winds.

Friday: Periods of snow. Up to 15cm with temps around -5 to -10. Light to moderate SW winds.

Saturday: Flurries with up to 10cm. Light SW winds and temps ranging from -5 to -15.

Details here: Mountain Weather Forecast.

Régions couvertes