Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 3
The start of last week's storm is marked by a layer of dirt that is harboring weak faceted snow. The other layer of concern is the same one that has been with us since the Holidays. This layer of sugary faceted snow formed near the ground and has been the culprit in a number of avalanche fatalities in Utah this season. This layer near the ground will now be 2'-4' deep and any avalanche failing here would be large enough to bury, injure, or kill a person. Slopes likely to be holding this layer are thinner, shallower, and have potentially already avalanched a couple of times this season (repeaters). The best way to find out if either of these layers exist is to take your shovel and probe out and check the snowpack before committing to steep terrain.
Photo (Champion) showing the dirt layer now buried below the surface.