Banff Yoho Kootenay

Problemi valanghivi

• 

  Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco

  Probabilità

  Possible

  Dimensione

  2–3

  The Valentines surface hoar is 70-150cm deep. It is far less active in deep snowpack areas, but is possible to trigger from shallow areas mainly E of the divide. This has been the case in numerous incidents this past week.
• 

  Loose Wet

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco

  Probabilità

  Possible - Likely

  Dimensione

  1–3

  Freezing levels to 2000m Sat. and even higher on Sunday will trigger a cycle on solar aspects. This could be the trigger that tickles the deeper layers, and it is a good idea to limit exposure to those aspects in the afternoon.
• 

  Deep Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alta quota
  • Limite del bosco
  • Sotto il limite del bosco

  Probabilità

  Unlikely - Possible

  Dimensione

  1–3

  Thin snowpack areas are most susceptible to triggering the basal depth hoar. As well, any avalanche initiated on the Valentines surface hoar layer could step down to the basal weakness. Thin has not been a major issue in thick snowpack areas.