Persistent Slabs
- Alta montaña
- Límite del bosque
- Bajo el límite del bosque
- Probabilidad
- Possible
- Tamaño
- 4
The weak sugary faceted snow at the base of the snowpack has gained some strength. The snowpack is slowly stabilizing. It is much less likely to trigger an avalanche at this time than a week ago. However, it is still possible. Slopes steeper than about 35 degrees on the mid and upper elevation northwest, north and northeast facing slopes are where you could find trouble. Snowpit tests still fail on the facets deep in the pack although the results are quite stubborn now. Keep in mind that if you trigger something it's going to be a deep avalanche with potentially serious consequences.
Persistent Weak Layer Summary, 2021-2022:
There was a foot or more of snow that fell in October.
This snow melted away on many slopes but it stayed on northwest, north and northeast facing slopes above about 8500'.
The snow that stayed turned into a weak sugary layer during dry weather in November.
We saw a large amount of snow in December which landed on top of the weak snow from October.
The weak layer of sugary faceted snow collapsed and produced avalanches under the stress of the large storms.
The weak layer is still present. We are monitoring it and are hopeful it will become more stable with time.