Boletín de aludes

Yukon

Jan 10 – 11, 2025Avalanche Canada
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Archivado · caducó 2 years ago

Peligro de aludes

Sun
Mon
Alta montaña
4 · Fuerte
Límite del bosque
3 · Notable
Bajo el límite
Sin grado
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Lo esencial

UPDATED AT 07:45 AM. The snowpack needs time to adjust to the new snow load. Use cautious route-finding and avoid alpine terrain.

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1.5–2.5

    A layer of facets over a crust formed in early December could produce large avalanches if triggered.

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2.5

    50 cm of recent snow and mild temperatures have created reactive storm slabs with potential to step down to deeper layers.

Confidence

Moderate

Avalanche Summary

Observations during the storm have been limited due to poor visibility. On Wednesday and Thursday our field team observed size 1-2 storm slab avalanches.

On Tuesday, they remotely triggered a large (size 2) storm slab near the Fraser Chutes, which stepped down to the persistent weak layer. Check out their MIN report.

Snowpack Summary

Light snowfall continues to accumulate. Since the start of the week, around 50 cm has fallen. Strong southerly winds have formed deeper deposits on northerly aspects.

The recent snow sits over a 20 to 30 cm thick layer of old faceted snow. Below 1700m, these facets sit over a crust. Recent avalanches have been observed to have failed on this layer.

The rest remainder of the snowpack is well bonded and settled. Snowpack depths range from about 100 to 180 cm.

Weather Summary

Thursday Night

Cloudy with 10 to 20 cm of snow. 50 to 70 km/h south ridgetop wind. Treeline temperature -3 °C. Freezing level 700 m.

Friday

Cloudy with around 5 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 500 m.

Saturday

Mostly cloudy with up to 5 cm of snow possible. 50 to 80 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 700 m.

Sunday

Mostly cloudy with up to 5 cm of snow possible. 60 to 90 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Travel in alpine terrain is not recommended.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Use conservative route selection and resist venturing into complex terrain.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

Regiones cubiertas