Bulletin d’avalanche

Lizard-Flathead

Apr 21 – 22, 2025Avalanche Canada
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Archivé · expiré last year

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Up to 25 cm of recent snow in localized areas and strong variable wind may have formed wind slabs on lee slopes at upper elevations.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Up to 25 cm of recent snow in localized areas and strong variable wind may have formed wind slabs on lee slopes at upper elevations.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–1.5

    Expect the first sign of sun to trigger wet loose avalanches on steep slopes.

Confidence

Moderate

Avalanche Summary

On Sunday, a few naturally triggered storm slabs up to size 1.5 were reported in the alpine near Fernie.

NOTE: Observations are currently very limited in this region.

Snowpack Summary

Up to 25 cm of recent snow in localized areas and strong variable wind may have formed wind slabs on lee slopes at upper elevations.

This snow overlies a robust crust everywhere except northerly aspects at upper elevations, where previous snow surfaces may have remained dry.

The mid/lower snowpack is well settled and strong.

Lower elevations are melting out rapidly.

Weather Summary

Monday Night

Mostly clear. 20 to 30 km/h northwest ridgetop wind. Treeline temperature -6 °C. Freezing level valley bottom.

Tuesday

Mix of sun and cloud. 5 to 10 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

Wednesday

Mostly sunny. 10 to 20 km/h northwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2300 m.

Thursday

Sunny. 10 to 20 km/h southeast ridgetop wind. Treeline temperature 5 °C. Freezing level 2500 m.

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.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Avoid sun-exposed slopes, especially if the snow surface is moist or wet.

Régions couvertes