Deep Persistent Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–3
Human triggering of deep persistent weak layers remains possible, especially in shallow areas with variable snow depths. Consequences could be severe if triggered.
Continually assess the snowpack for signs of instability with changing weather conditions. Hazard will likely increase with increased wind and rising freezing levels.
Human triggering of deep persistent weak layers remains possible, especially in shallow areas with variable snow depths. Consequences could be severe if triggered.
No recent avalanches have been reported in the region.
Please continue to share any observations or photos on the Mountain Information Network.
Roughly 10 cm of low-density snow since the weekend overlies a generally well-settled upper snowpack. The mid and lower snowpack consists of loose facets, with a significant weak layer of large facets and a crust down 80 to 120 cm from the surface. The snow below the crust is generally weak and unconsolidated.
Treeline snow depths are roughly 140 to 160 cm.
Thursday night
Cloudy, with no precipitation. Light to moderate southwest ridgetop winds. Treeline temperatures 0 to -5 C.
Friday
Cloudy, with flurries, 0 to 2 cm. Light to moderate southwest ridgetop winds. Treeline temperatures around 0 C. Freezing levels 2200 m.
Saturday
Cloudy with light snow, 0 to 5 cm. Light southwest ridgetop winds. Treeline temperatures around 0 C. Freezing levels 2000 m.
Sunday
Mostly cloudy, with no precipitation. Light southwest ridgetop winds. Treeline temperatures 0 to -5 C.
More details can be found in the Mountain Weather Forecast.