Banff Yoho Kootenay

Problèmes avalancheux

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Likely

  Taille

  1–2

  Strong NW winds over the last 24-hours have created windslab conditions in open areas at higher elevations. With 80cm of recent storm snow available for transport, expect deep slabs in leeward areas.
• 

  Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Very Likely

  Taille

  2–4

  The Valentine surface hoar down 75 cm is overlain by a stiff slab and remains very sensitive to triggers. This problem is actively producing large avalanches in many locations and will remain so for the forecast period. Avoid all steep open terrain.
• 

  Deep Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpin
  • Limite forestière
  • Sous la limite forestière

  Probabilité

  Possible

  Taille

  2–4

  The deep facets in the Rockies snowpack are awake again, and are responsible for numerous size 3 and 4 avalanches in the last 48-hours. Avalanches starting in the upper snowpack are stepping down into the base of the snowpack.