Bollettino valanghe

North Rockies

Jan 7 – 8, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 9 months ago

Pericolo valanghe

Fri
Sat
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

UPDATED AT 6:40 AM PACIFIC:


Southwest winds are building new wind slabs, be cautious as you transition into open terrain.

A persistent weak layer remains a concern in this region.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2

    Moderate to strong southwesterly winds have formed new wind slabs at upper elevations.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3

    A crust with facets buried 50 to 170 cm produced a widespread cycle of natural and human-triggered avalanches last week. Remote triggering and step-down potential continue to be a concern with this layer.

Confidence

Moderate

  • Uncertainty is due to the fact that persistent slabs are particularly difficult to forecast.

Avalanche Summary

Jan 3

  • Numerous natural slab avalanches up to size 2 were observed in Pine Pass out of steep south-facing alpine areas.

Jan 2

  • Explosive control produced a few size 1.5 slabs in steep treeline terrain.

Dec 31

  • A very large naturally-triggered size 3.5 avalanche failed on the persistent weak layer.

Snowpack Summary

Up to 25 cm of recent snowfall has been blown into slabs in leeward alpine and treeline terrain by winds from variable directions.

A persistent weak layer formed in mid-December, consisting of a crust with weak facet and was the cause of a large natural avalanche cycle in the middle of last week. This layer is now buried 50 to 170 cm deep, depending on the aspect and wind loading.

In thin snowpack areas, faceted grains or depth hoar may exist at the base of the snowpack.

Weather Summary

Tuesday Night
Mostly cloudy. Up to 3 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Wednesday
Mostly cloudy. Up to 5 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Thursday
Mostly cloudy. Up to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -10 °C.

Friday
Mostly cloudy. Up to 10 cm of snow areas around the pine pass could get up to 30 cm. 70 km/h southwest ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Regioni coperte