Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 2
Above 7,500 feet, persistent slabs lie upon weak, faceted snow and sun crusts formed during the January dry period. There is a high degree of spatial variability associated with these weak layers, which makes them difficult to predict. Careful evaluation of terrain is required. These slabs could be triggered by backcountry travelers in steep, avalanche prone terrain with depths up to three feet.