Bulletin d’avalanche

Little Yoho

Feb 15 – 16, 2026Avalanche Canada
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Archivé · expiré 8 months ago

Danger d’avalanche

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

Good conditions overall, but we have lingering concerns for pockets of persistent slab in the Kootenay and Yoho areas, where a 20-40 cm slab may overlie the Jan 24 surface hoar/crust layer and be reactive in steeper terrain. Watch for cracking or signs of slab formation as you enter steep terrain at treeline and below.

Problèmes avalancheux

  • Wind Slabs

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

    Fresh snow on Friday night and moderate winds have created small fresh wind-slabs in immediate lee alpine terrain.

  • Persistent Slabs

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

    A 10-30 cm slab over the Jan. 24th surface hoar layer could catch users off guard in isolated, shady aspects at treeline and below. Check the snowpack often and monitor the character and behaviour of the slab above this weak layer closely. Recent activity has been between 1500 and 1900 m.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

A Parks Canada field team reported whoomphing, cracking and ski-cutting a size one avalanche on the Jan 24th surface hoar down 30-40 cm at 1800 m in the Simpson area of Kootenay Park.

A recent report from Yoho shows a reactive Jan 24 surface hoar layer down 25 cm at below treeline elevations.

Snowpack Summary

5 cm of overnight snow makes for 10-20 cm of soft surface snow in sheltered north facing alpine areas that diminishes with elevation. The new snow overlies crusts on solar aspects and wind effect in exposed alpine areas. The Jan 24 layer (surface hoar/crust) is down 15-30 cm at treeline and below. This layer has been reactive in isolated pockets between 1500 and 1900 m (see avalanche summary). Below this interface, the snowpack is generally strong and well settled.

Weather Summary

Sunday: A weak ridge will bring clearing skies and dry conditions. Light to moderate west winds. Tree-line temps ~-7°C.

Monday: Trace of snow during day that picks up in evening. 5-10cm expected by Tuesday morning. Light SW winds, treeline temperatures ~-7°C.

Terrain and Travel Advice

  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Régions couvertes