update 13.03.18 7:27 (Michael Butschek - translated by Jeffrey McCabe)
Increased gliding avalanches
The nocturnal reserves of cold are swiftly dissipated (only thin melt-freeze crusts), the snowpack is moist at least up to 2400 m. Main problem: small to medium gliding avalanches and loosely-packed wet-snow avalanches, triggered artificially and naturally. Above 2200 m, snowdrifts on north-facing slopes are triggerable primarily by large additional loading.
Avalanche danger is MODERATE (2) in general.
Warmth and intermittent rainfall (up to 1700 m yesterday) have moistened the snowpack significantly, gliding avalanche activity was correspondingly high. Following a night of heavily overcast skies, the cold reserves are diminished and quickly dissipate during the daytime, i.e. the thin crusts or rain-ice is swiftly softened. Above 1700 m, esp. in Tennen range, Hochkönig, Niedere Tauern, there is a thin layer of fresh snow and graupel.
Alpine Weather Forecast (ZAMG Salzburg)
Sunshine and clouds, with varying visibility. Along the Tauern, showers of rain or snow (snowfall level 1300-1700 m). In the Northern Alps the clouds will disperse somewhat. Strong westerly winds will prevail, even stormy in the Northern Alps at high altitude. At 2000 m: -3 degrees; at 3000 m: -10 degrees.
Short Term Development
No significant change is expected. Nighttime skies will generally be overcast, only in the Lungau will the snow be able to cool sufficiently. The minor amounts of fresh snow will be moistened by the powerful sunshine. Small, fresh snowdrifts on east facing slopes at high altitude. Despite the heightened temperatures, gliding avalanches remain the biggest threat.