Bulletin d’avalanche

Lizard-Flathead

Feb 19 – 20, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

The weather forecast calls for a gradual warming trend in the coming days. Watch for persistent slabs to become more reactive.

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–2.5

    The late January weak layer is a problem where the snow above it is stiff and slabby. Read more about it in our Blog.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–2

    Light, dry snow may gather mass as it moves downhill. Avoid being underneath steep features and above one another.

Confidence

Moderate

Avalanche Summary

There have been numerous, small to large (size1 to 2) dry loose avalanches, both natural- and rider-triggered reported running in steep terrain over the past few days. There have been whumpfs reported on the weekend just outside the ski area in Fernie.

Snowpack Summary

20 to 30 cm of snow has fallen since last Friday. This storm snow is sitting on 30 to 60 cm of faceted old snow. Below this is a persistent weak layer buried in late January, which is a crust on sun-exposed slopes, and facets and/or surface hoar elsewhere.

The mid and lower snowpack is generally well settled, with no other layers of concern.

Weather Summary

Tuesday Night

Mostly clear. 20 to 30 km/h south ridgetop wind. Treeline temperature -15 °C.

Wednesday

Mix of sun and clouds. 15 to 25 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Thursday

Mostly cloudy with isolated flurries. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Friday

Mostly cloudy with isolated flurries. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.
  • Make observations and continually assess conditions as you travel.
  • Loose avalanches may step down to deeper layers, resulting in larger avalanches.

Régions couvertes