Bollettino valanghe

Kootenay Boundary

Dec 25 – 26, 2024Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 2 years ago

Pericolo valanghe

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

In sintesi

Wind and storm slab development will continue with new snow and wind.

Problemi valanghivi

  • Wind Slabs

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

    Recent snowfall and moderate alpine winds have created wind slabs in exposed terrain at higher elevations.

  • Persistent Slabs

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

    Despite a lack of recent avalanche activity on buried weak layers, snowpack tests suggest these layers remain a concern. Particularly on steep open slopes at treeline and above.

Confidence

Moderate

Avalanche Summary

A few natural, skier, and explosive-triggered surface slab avalanches were reported over the weekend. These avalanches were generally no deeper than 20 cm and up to size 1.5.

No new avalanches have been reported since the weekend.

Snowpack Summary

Another round of fresh snow has provided a surface refresh in many areas. Southwest winds continue redistributing recent snow, forming deeper deposits on leeward slopes at higher elevations. A crust is present at or just below the surface at lower elevations, with moist snow likely near the valley bottom where recent precipitation fell as rain.

The upper snowpack continues to settle and bond well following significant accumulation over the last two weeks.

A potential weak layer of surface hoar or facets, along with a crust, persists in the mid-snowpack, and snowpack tests continue to indicate potential instability.

The lower snowpack is generally strong and well-bonded.

Weather Summary

Tuesday Night

Mostly cloudy. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Wednesday

Mostly cloudy with 0 to 2 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Thursday

Cloudy with 5 to 15 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -6 °C.

Friday

Cloudy with 2 to 5 cm of snow. 10 to 30 km/h south ridgetop wind. Treeline temperature -6 °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.
  • Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.
  • Surface hoar distribution is highly variable. Avoid generalizing your observations.

Regioni coperte