Bollettino valanghe

Long Range Mountains

Avalanche Canada
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Pericolo valanghe

Sun
Mon
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
Senza grado
Non aggiornato — questo bollettino è scaduto 5 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Snowfall and strong winds are forming new storm slabs and wind slabs.

Human triggered avalanches are likely on lee aspect terrain features.

Problemi valanghivi

  • Storm Slabs

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

    Strong westerly winds will transport new snow, forming new wind slabs. Avoid areas just below ridgetop, where deep drifts and large pillows of snow have formed.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Numerous small to large avalanches ( up to size 3) where observed over the past week. These avalanche where found on all aspects and where triggered by either ongoing wind loading or during a period of rapid warming.

Snowpack Summary

10 to 15 cm of new snow overlies a thin crust that was buried on Friday. Below this 20 to 50 cm of mostly light snow sits above a 20 cm thick crust that was formed after last weeks warming temperatures and rainfall.

90 to 120 cm deep, on steep southeast through southwest slopes, a crust with weak, sugary facets on top has been observed. This layer is still a concern, but is currently dormant.

The mid and lower snowpack is well settled, with no layers of concern.

Weather Summary

Friday Night
Cloudy. 3 to 4 cm of snow. 60 to 80 km/h west ridgetop wind. Treeline temperature -12 °C.

Saturday
Mostly cloudy. 30 km/h west ridgetop wind. Treeline temperature -10 °C.

Sunday
Mostly cloudy. 3 to 10 cm of snow. 50 km/h northeast ridgetop wind. Treeline temperature -8 °C.

Monday
Mix of sun and clouds. 1 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -13 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • Closely monitor how the new snow is bonding to the crust.

Regioni coperte