Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 2
The persistent weak layer (PWL) on north-facing slopes in the Provo area is losing strength daily and will struggle to support additional weight from new snow or wind loading. Even small amounts of snow or wind, like we saw over the past two days, can form sensitive slabs in exposed areas.
Pay close attention to which slopes and aspects are holding snow now to identify areas to avoid during the next storm.
Massive surface hoar Joey observed from our day in Snake Creek last week, it only continues to grow and form.
Weak snow, including surface hoar, is also forming at the surface. The key question is whether warmer temperatures and wind will destroy this instability before the next snowfall. Learn more about surface hoar.