Bulletin d’avalanche

Lizard-Flathead

Feb 28 – Mar 1, 2026Avalanche Canada
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Archivé · expiré 7 months ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

It's a challenging snowpack.

Strong winds have left slabs in open features, while persistent slab avalanches are most likely in sheltered areas at treeline and below.

Problèmes avalancheux

  • Wind Slabs

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

    Recent wind slab formation has been extensive, and stubborn slabs could extend into openings below treeline.

  • Persistent Slabs

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

    Be aware of the potential for remote triggering and large avalanches due to buried surface hoar, especially at treeline and below.

Confidence

Moderate

  • Persistent slabs could become more likely with the forecast weather.

Avalanche Summary

On Thursday, our field team found a reactive persistent slab problem near Sparwood.

Observations are currently very limited in this region. Please consider sharing your observations with the Mountain Information Network.

Snowpack Summary

Up to 25 cm of recent snow and variable strong winds have formed wind slabs on a variety of aspects and elevations, including into open areas below treeline.

A layer of surface hoar down 30 to 60 cm may become increasingly reactive to human triggers. Persistent slab avalanches are most likely in sheltered areas at treeline and below, where the surface hoar is well preserved.

The mid and lower snowpack are well settled in some areas. In others, large facets (depth hoar) are present at the bottom of the snowpack.

Weather Summary

Friday Night

Mostly cloudy. 2 to 5 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -6 °C.

Saturday

Mostly sunny. 40 km/h west ridgetop wind. Treeline temperature -7 °C.

Sunday

Sunny. 40 km/h west ridgetop wind. Treeline temperature -5 °C.

Monday

Sunny. 50 km/h west ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.
  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • In times of uncertainty, conservative terrain choices are our best defense.

Régions couvertes