Persistent Slabs
- Hochgebirge
- Waldgrenze
- Unterhalb der Waldgrenze
- Wahrscheinlichkeit
- Possible - Likely
- Größe
- 1.5–3
Persistent and wet slabs have been seen to be failing on the arctic facets down 30-50cm
No freeze is expected overnight. The heat has made the snowpack unstable and ski quality extremely poor. Ice climbers this is the time to avoid gully features where the consequences of even a small wet loose slide can be large.
Persistent and wet slabs have been seen to be failing on the arctic facets down 30-50cm
Surface snow becoming moist and wet with high freezing levels.
Recent evidence exists of avalanche failing in the basal facets and depth hoar close to ground.
Numerous loose wet avalanches up to sz 2 and a few deep persistent avalanche up to sz 2.5 have been observed over the past few days. The deep avalanches mainly occurred on N and E aspects initiating in alpine terrain.
Warm temps are making the snowpack isothermal in lower elevation areas and making the top 10-30cm moist at treeline and above. This rapid settlement is overloading the weak basal facets in some areas triggering full depth avalanches. Travel in avalanche terrain is not recommended at this time.
On a positive side when it does get cold again, the snowpack will be fairly supportive! Dig out your ski crampons for February!
Another warm day in store with no overnight freeze expected expected and freezing levels on Wednesday around 2800m. The sky will be sunny also so pay attention to aspect that you are on/under. Day time highs will be around +4 at treeline.
More details can be found in the Mountain Weather Forecast.