Persistent Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Possible
- Größe
- 1–2
A weak layer of surface hoar/crust/facets exists in the upper snowpack. The new snow load will test whether this layer remains reactive.
Don't underestimate what the February sun can do to fresh snow. Storm slabs will likely be reactive on Sunday.
A weak layer of surface hoar/crust/facets exists in the upper snowpack. The new snow load will test whether this layer remains reactive.
Fresh storm slabs will likely be sensitive to human triggers and seeing the sun for the first time.
Widespread storm slab avalanche activity was observed on Saturday. Slabs were size 1.5 to 2, triggered naturally and artificially.
30 to 40 cm of new snow sits over a variety of surfaces including wind affected snow, surface hoar in sheltered areas and crust on solar aspects and low elevations.
Below this, depending on aspect and elevation, the upper snowpack may contain two more layers of crust, facets and/or surface hoar formed in late January and early February. We have uncertainty around the reactivity of these layers.
The mid and lower snowpack remain well settled, with no significant concerns at this time.
Saturday Night
Partly cloudy. 40 km/h west ridgetop wind. Treeline temperature -6 °C.
Sunday
Mix of sun and clouds. 30 km/h west ridgetop wind. Treeline temperature -6 °C.
Monday
Mostly cloudy. 5 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.
Tuesday
Mostly cloudy. 15 to 25 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -5 °C.
More details can be found in the Mountain Weather Forecast.