Bollettino valanghe

Lizard-Flathead

Feb 21 – 22, 2024Avalanche Canada
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Archiviato · scaduto 3 years ago

Pericolo valanghe

Fri
Sat
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole

In sintesi

Heightened avalanche conditions remain where slabs have formed above a weak layer buried deep in the snowpack.

Evaluate slopes individually before committing to the terrain.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2.5

    This problem is most likely where weak sugary snow is starting to form a weak layer above the early February crust. Avalanches on this layer could propagate wider and run farther than expected.

Confidence

Moderate

Avalanche Summary

On Monday, a group of skiers triggered a size 2, persistent slab avalanche in the Ladder Chutes, close to Fernie. For more details check out the MIN post.

A few natural loose dry avalanches were observed up to size 1 in steep terrain.

Snowpack Summary

Alpine and open treeline terrain is generally wind-affected. In wind sheltered areas, 30 to 60 cm of settling snow sits above a 10-20 cm thick, rain crust that formed in early February. In some areas, weak, sugary crystals (facets) are starting to form above this crust.

Weather Summary

Tuesday Night

Cloudy with 1 to 5 cm of snow. 10 to 25 km/h southwest ridgetop wind. Treeline around -2 °C. Freezing level to 1000 m.

Wednesday

Partly cloudy. 10 to 25 km/h southwest ridgetop wind. Treeline high around 0 °C. Freezing level rising to 1600 m.

Thursday

Mostly cloudy with 0 to 2 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature around 0°C. Freezing level at 1800 m.

Friday

A mix of sun and cloud. 20 to 30 km/h southwest ridgetop wind. Treeline temperature around 0°C. Freezing level at 1900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep in mind the crust offers an excellent bed surface for avalanches.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.

Regioni coperte