Bulletin d’avalanche

Banff Yoho Kootenay

Feb 9 – 10, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Be mindful of solar inputs on Friday and Saturday. There is potential for small loose wet avalanches out of steeper southerly terrain.

Problèmes avalancheux

  • Persistent Slabs

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

    Two persistent layers from the end of December and mid January exist in the mid-pack down roughly 30 and 50 cm. There has been little activity on these layers recently, however stability tests still show moderate "sudden" results on these interfaces.

  • Deep Persistent Slabs

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

    The weak base is still present in most areas at tree-line and above. Forecasters have not seen a significant avalanche on this layer for some time, however the weak structure of this layer still warrants a cautious approach.

Confidence

High

Snowpack Summary

15-25cm of recent storm snow overlays the Feb 3 temperature crust which is evident on all aspects except north above 2500m. A thin sun-crust exists on the surface on steep south aspects. Moderate shears persist in the midpack down roughly 30 and 50cm on several persistent interfaces. Facets and depth hoar make up the basal layers of the snowpack in most locations.

Weather Summary

A weak upper ridge moves into the forecast area on Friday afternoon resulting in mainly sunny skies, light winds and minimal to no snow through Saturday. Freezing levels will be near valley bottom.

For more mountain weather click HERE.

Terrain and Travel Advice

  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Closely monitor how the new snow is bonding to the crust.

Régions couvertes