Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
You are most likely to trigger a large and dangerous avalanche where you find a shallow area of the snowpack. You can find shallow areas near rock outcroppings, on steep rollovers, and below ridges and cliff bands. You can trigger a smaller avalanche where winds have recently drifted snow onto northerly and easterly-facing slopes. Small avalanches in the wind-drifted snow could step down to deeper weak layers, triggering a larger and more dangerous slide. Use caution on steeper slopes where the snow surface transitions from soft to stiff or in places with a rounded or wave-like appearance.
You can find safer riding options below treeline, or on low-angled, wind-sheltered slopes without steep overhead hazards.