Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
Strong winds are drifting new snow onto slopes at upper elevations. The most dangerous slopes face north and northeast where you also run the risk of triggering a very large avalanche breaking on buried weak layers two to five feet deep. Avalanches of this type would likely be unsurvivable. Cracking in freshly drifted snow is a sign to move to lower angle or wind-sheltered slopes. You may not see cracking or hear collapsing though before a deeper slide breaks. Traveling in terrain less than about 30 degrees can reduce your risk.