Bollettino valanghe

North Rockies

Feb 11 – 12, 2024Avalanche Canada
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Archiviato · scaduto 3 years ago

Pericolo valanghe

Tue
Wed
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Small wind slabs are resting on a crust in immediate lee features, ridge crests and in sharp breaks in terrain.

Watch for signs of instability like shooting cracks.

Problemi valanghivi

  • Wind Slabs

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

    Strong winds have built wind slabs on easterly aspects.

Confidence

High

Avalanche Summary

Small, naturally triggered wind slab avalanches were reported on Friday, sliding on the firm crust that is everywhere in the region.

If you head out consider posting to the mountain information network.

Snowpack Summary

Up to 15 cm of dry snow has been redistributed by strong west winds in that alpine and has accumulated atop a widespread hard crust. In general, the crust is strong and supportive to travel on.

Currently, it's unlikely that any lingering weak layers deeper in the snowpack could be triggered due to the strong supportive crust above.

Last week's warm temperatures significantly melted the snowpack below the treeline and in shallow alpine terrain. See the North Rockies MIN post for photos of conditions in the Morfee area.

Areas in the east of the region are largely characterized by a shallow and faceted snowpack.

Weather Summary

Saturday Night

Mostly cloudy with up to 3 cm of snow, 30 to 50 km/h west alpine wind, treeline temperature -8 °C.

Sunday

Mostly cloudy, 20 to 30 km/h southwest alpine wind, treeline temperature -5 °C.

Monday

Mostly sunny, 40 to 60 km/h northwest alpine wind, treeline temperature -6 °C.

Tuesday

Mostly clear, 30 to 40 km/h north alpine wind, treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Expect shallow snow cover that barely covers ground roughness.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for wind slab hazard before you commit to it.

Regioni coperte