Bollettino valanghe

Yukon

Jan 10 – 11, 2025Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 2 years ago

Pericolo valanghe

Sun
Mon
Alta quota
4 · Forte
Limite del bosco
3 · Marcato
Sotto il limite
Senza grado
Apri la mappa completa

In sintesi

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

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1.5–2.5

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

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    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.

Regioni coperte