Bulletin d’avalanche

Yukon

Mar 29 – 30, 2022Avalanche Canada
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Archivé · expiré 5 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
Sans niveau
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Points saillants

Carefully assess your line for wind slab before committing to it. Keep your head up and be aware of cornice hazard.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–1.5

    New wind slabs will likely form throughout the day in exposed terrain.

  • Cornices

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

    Large cornices have been observed in the region. Limit time traveling on slopes with these hazards above them. Avoid these slopes all together during times of warming or solar input.

Confidence

Moderate - The snowpack structure is generally well understood.

Weather Forecast

Tuesday night: Flurries bringing up to 5 cm of new snow with light to moderate southwest winds. Low of -4 at 1100 m.

Wednesday: Cloudy with flurries bringing up to 5 cm of new snow with Moderate southwest winds. Freezing level rising to 1000 m.

Thursday: Mostly cloudy with light flurries bringing trace amounts of new snow with light to moderate southwest winds. Low of -3 at 1100 m.

Friday: Mostly cloudy with flurries bringing up to 5 cm of new snow. Light to moderate south winds and a high of -2 at 1100 m.

Avalanche Summary

On Monday two large natural cornice falls were observed. They did not pull a slab on the slope below but the debris from the cornice itself would have been very destructive. 

Snowpack Summary

New wind slab could form in exposed terrain. Moist snow could be observed at low elevations.

A couple of sun crusts exist in the upper snowpack but none have been identified as layers of particular concern. The lower snowpack is thought to be well settled.

Terrain and Travel

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Minimize your exposure time below cornices.

Régions couvertes