Banff Yoho Kootenay

Problèmes avalancheux

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Possible

  Taille

  1–3

  These hard windslabs are between 10 and 25cm deep. Any new snow may hide these windslabs that up until recently have been active. It may still be possible to trigger this layer in select features from a thin edge of the slab.
• 

  Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Possible

  Taille

  1–3

  A surface hoar layer down 70-100 cm has been found in Kootenay, Sunshine, Takakkaw falls, and BJ highway. It's isolated in distribution. It varies between unreactive to stubborn in tests, but shears cleanly when it goes.
• 

  Deep Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Possible

  Taille

  2–3

  This layer may become more active and more sensitive to trigger with the forecasted snow and moderate SW winds for tonight and Monday. Cornice failures or new load from snow or wind may trigger large avalanches (see MCR on Stanley area).