Bollettino valanghe

North Rockies

Mar 7 – 8, 2025Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 2 years ago

Pericolo valanghe

Sun
Mon
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

Avoid steep north-facing slopes, where triggering persistent weak layers is most likely.

Sheltered terrain should have the best riding and safest conditions.

Problemi valanghivi

  • Wind Slabs

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

    Wind slabs may be building in lee areas. Avoid steep, loaded areas.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–3

    Weak layers persist within the upper 90 cm of the snowpack. Avoid shallow areas where triggering these layers is more likely.

Confidence

Moderate

Avalanche Summary

On Wednesday, there were numerous wet loose avalanches from steep slopes facing the sun. Mostly small, with the occasional large one (size 2).

Last week, several persistent slab avalanches occurred, up to size 2.5, on north-to-east facing alpine and treeline terrain.

Although no recent avalanche activity has been reported on this layer, it remains reactive in test pits, and professionals in the region are still concerned about it.

Snowpack Summary

Up to 5 cm of snow overlies a melt-freeze crust on all aspects to 1600 m. Southwest wind is expected to redistribute this snow into wind slabs in exposed areas.

A weak layer of surface hoar or facets is found 20 to 50 cm down in many areas. A second weak layer buried 60 to 90 cm consists of surface hoar, facets. and/or a hard crust. These persistent layers remain a concern, with the potential for large step-down avalanches.

Weather Summary

Thursday Night

Partly cloudy. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday

Cloudy with up to 5 cm of snow. 40 to 70 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Saturday

Cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1500 m.

Sunday

Cloudy with 5 to 10 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be mindful that deep instabilities are still present in the snowpack.
  • Avoid areas with a thin or variable snowpack.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.

Regioni coperte