Jasper

Avalanche problems

• 

  Wind Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpine
  • Treeline
  • Below treeline

  Likelihood

  Possible

  Size

  2–3

  Wind slabs exist lee aspects at treeline and alpine locations. Recent winds were Northerly so watch for reverse loading. No natural avalanches have been noted on this layer but bonds have not been tested.
• 

  Loose Wet

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpine
  • Treeline
  • Below treeline

  Likelihood

  Possible - Likely

  Size

  1–3

  The sun is expected Friday into Sunday and it packs a punch. Depending on variables such as overnight temperatures, previous day temperatures, cloud cover, wind cooling effect, loose wet avalanches can occur rapidly. Expect activity of this nature.
• 

  Deep Persistent Slabs

  N

  NE

  E

  SE

  S

  SW

  W

  NW

  • Alpine
  • Treeline
  • Below treeline

  Likelihood

  Possible

  Size

  2–4

  This layer can wake up with daytime heat. There are reports of large avalanches to the South of us plus skiers at the Icefields triggered a size 3 last Sunday from a shallow area on the surface hoar. Investigate for this weakness before committing.