Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
Expect quiet, but dangerous avalanche conditions with fragile weak snow lurking two to four feet below the surface. You may not get any collapsing or cracking before triggering a large, deep avalanche. You might trigger one of these avalanches from below a slope or from a distance so avoid traveling both on and underneath steep slopes facing west through north to southeast. Look for safer options on south and southwest-facing slopes where the early season snow melted, or by avoiding travel on or underneath slopes steeper than about 30 degrees.