Bollettino valanghe

Purcells

Feb 26 – 27, 2026Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 7 months ago

Pericolo valanghe

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

In sintesi

Wind slab formation has been extensive and could extend into openings below treeline.

Persistent slabs sitting on a weak layer of surface hoar remain possible to human trigger.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3

    Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3

    Be aware of the potential for remote triggering and large avalanches due to buried surface hoar, especially at treeline and below.

Confidence

Moderate

  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

On Tuesday, a naturally triggered size 2 wind slab and numerous explosive triggered size 2 wind slabs were reported on north and east aspects in the alpine.

Numerous persistent slab avalanches up to size 3 were reported on all aspects and elevations over the weekend. They were triggered accidentally, naturally, and remotely.

See recent MIN reports here and here for further details.

Snowpack Summary

Up to 20 cm of recent snow accompanied by strong southwest wind has formed deeper deposits on north and east aspects. In sheltered terrain it will overlie a layer of surface hoar or a sun crust. The snow surface is expected to become moist on sun exposed slopes.

A couple concerning weak layers exist in the upper snowpack:

  • 60 to 80 cm deep, there is a supportive crust on south-facing terrain. On north-facing terrain, this layer maybe a breakable crust or surface hoar.

  • The late January layer is buried 70 to 120 cm deep. It consists of a crust with facets or surface hoar above it.

The mid and lower snowpack is well settled.

Weather Summary

Wednesday Night
Cloudy. 60 km/h west ridgetop wind. Treeline temperature -7 °C.

Thursday
Cloudy. 3 to 15 cm of snow. 70 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Friday
Mostly cloudy. 5 to 15 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -5 °C.

Saturday
Sunny. 35 km/h west ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • In times of uncertainty, conservative terrain choices are our best defense.

Regioni coperte