Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
You can trigger a large or very large avalanche from below or some distance away. The snowpack is not trustworthy on northerly and easterly-facing terrain. It may appear stable. You may not see indications of unstable snow, like cracking or collapsing before a slide breaks on the weak layers near the ground. The consequences of getting caught in one of these slides will be dire. The easiest way to keep yourself safe in these low-probability, high-consequence periods is to avoid steep, northerly, and easterly-facing slopes. If you are traveling near suspect slopes, consider your safe zones as slides can be much larger than you anticipate.