Bulletin d’avalanche

Dogtooth

Mar 8 – 9, 2026Avalanche Canada
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Archivé · expiré 7 months ago

Danger d’avalanche

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

A persistent weak layer remains the primary concern - stick to conservative terrain free from overhead hazard.

Watch for new and reactive wind slabs forming at upper elevations.

Problèmes avalancheux

  • Wind Slabs

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

  • Persistent Slabs

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

    Surface hoar or a crust, is at a perfect depth for human triggering. This layer may be more reactive with mild temperatures.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.
  • We are uncertain due to the variability of wind effect on the snowpack.

Avalanche Summary

On Thursday, two large natural wind slab avalanches and a very large explosive-triggered persistent slab were reported from the northern part of this region.

On Friday, one small persistent slab avalanche was triggered on a northwest facing slope, below treeline.

Snowpack Summary

Light snow accompanied by strong west wind has likely built small wind slabs treeline and above. Below this, a new surface hoar/surface crust layer has been buried.

A persistent weak layer of surface hoar or crust is buried 40 to 60 cm, with deeper snowpacks like the Dogtooth Range, reporting this layer up to 100 cm deep. While reports of persistent slab avalanche activity has tapered, the snowpack structure remains a concern.

The mid and lower snowpack are generally well settled. In shallow snowpack areas, large facets or depth hoar are present at the bottom of the snowpack.

Weather Summary

Saturday Night
Mostly cloudy. 4 to 10 mm of precipitation as snow or rain at treeline. 80 km/h west ridgetop wind. Treeline temperature -1 °C. Freezing level 2100 m.

Sunday
Mostly cloudy. 5 cm of snow. 70 km/h west ridgetop wind. Treeline temperature -3 °C.

Monday
Mix of sun and clouds. 3 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -9 °C.

Tuesday
Mostly sunny. 1 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -12 °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.
  • Avoid shallow snowpack areas, rocky outcrops, and steep terrain where triggering is most likely.
  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Régions couvertes