Bollettino valanghe

Kootenay Boundary

Jan 2 – 3, 2025Avalanche Canada
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Archiviato · scaduto 2 years ago

Pericolo valanghe

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

In sintesi

Surface instabilities and deeper weak layers may remain reactive to riders.

Choose low-consequence terrain and watch for signs of instability.

Problemi valanghivi

  • Persistent Slabs

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

    Buried weak layers of surface hoar and facets on a crust are now buried 70 to 120 cm deep. Be especially cautious on steep, open slopes at treeline and below.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–1.5

    Continued snowfall and wind have formed storm slabs in lee and cross-loaded areas. Human triggering is possible near ridge crests, rollovers, and steep terrain.

Terrain and Travel Advice

  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.

Confidence

Moderate

Avalanche Summary

Small storm slabs and loose dry avalanches (size 1) were easily triggered by riders on steep, sheltered treeline terrain features on Monday.

No recent natural avalanche was reported, except evidence from last weekend's past cycle.

If you head out in the backcountry, let us know what you are seeing by submitting a MIN report!

Snowpack Summary

30 to 50 cm of settling snow can be found in sheltered areas. Previous moderate southwest wind has redistributed this snow, forming deeper deposits on leeward slopes at higher elevations.

Below this recent snow, a thin crust is present below approximately 1600 m.

Weak layers of surface hoar or facets and a crust may persist in the mid-snowpack. Professionals are still concerned about its potential instability.

The lower snowpack is generally strong and well-bonded.

Weather Summary

Wednesday Night

Cloudy. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Thursday

Cloudy with light snowfall 1 to 5 cm. 10 to 15 km/h southwest ridgetop wind. Treeline temperature -10 °C.

Friday

Cloudy, with isolated flurries. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Saturday

Cloudy with snowfall 10 to 15 cm. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Regioni coperte