Bulletin d’avalanche

North Rockies

Mar 9 – 10, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré

Points saillants

Continuously assess and verify conditions as you move through the mountains

Recent snowfall amounts are highly variable, we have uncertainty in both the size and likelihood of avalanches

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    2–3

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

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2.5

    Storm slabs will likely remain rider triggerable. Assess new snow amounts, the more you find the larger and more sensitive slabs will be.

Confidence

Low

Avalanche Summary

On Saturday, a small natural wind slab avalanche was observed in the PK backcountry, check out this detailed MIN for more info.

Snowpack Summary

New snowfall amounts in the region are highly variable, By Monday morning 10 to 40 cm may have fallen with moderate southwest winds, forming deeper deposits on north and east aspects. This new snow will overlie a crust on all aspects and elevations except higher north facing slopes.

A weak layer of surface hoar or facets from mid February is found 30 to 80 cm down in many areas. A second weak layer buried 60 to 120 cm from late January consists of surface hoar, facets, and/or a hard crust.

The lower snowpack is well settled and bonded.

Check out this great MIN from Hasler, where recent snowfall amounts were on the lesser side.

Weather Summary

Sunday Night

Mix of cloud and clear skies with up to 5 cm of snow. 10 to 30 km/h west ridgetop wind. Treeline temperature -3 °C, potential for inversion with colder temps below treeline.

Monday

Mostly cloudy with 0 to 2 cm of snow. 10 to 30 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Tuesday

Mostly cloudy with around 5 cm of snow. 15 to 25 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Wednesday

Mostly cloudy with around 5 cm of snow. 10 to 20 km/h east ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be careful as you transition into wind-affected terrain.
  • Be aware of the potential for large avalanches due to buried weak layers.

Régions couvertes