update 11.01.19 7:39 (Bernhard Niedermoser - translated by Jeffrey McCabe)
Still tense: below 2000 m CONSIDERABLE, above 2000 m HIGH danger
In steep avalanche starting zones, especially where snowfall has been heavy, also due to solar radiation, naturally triggered loose/powder cloud or slab avalanches can be expected. In starting zones above 2200 m they can be large and even very large and endanger transportation routes. Below 1400 m, heavy glide-snow activity, avalanches can be large, endanger transportation routes. Treacherous ridgeline drifts on steep slopes in all aspects above 2000/2200 m - easily triggerable!
In the areas where snowfall has been heaviest (Osterhorn range, Steinberge over Hochkönig to Gosaukamm) the main problem is natural triggering. As the snow settles today, numerous medium, some large, a few very large loose-snow powder cloud avalanches are possible above 2200 m. Exposed transportation routes and property can be placed at risk.
Over the last 48 hours (following the intermission on 7/8 January) there was 100 cm of fresh snow registered in the northern barrier-cloud regions, about 30-60 in Tauern and inneralpine regions, less in the Lungau. The fresh snow is very cold, the uppermost 30 cm is very light and loosely-packed. The snowdrifts are easily triggered, also in transitions to settled snow from the weekend fracture propagation is a threat. Inside the old snowpack at 2200-2800 m are potential weak layers which can be triggered as the weight of fresh snow accumulates on top of them.
Alpine Weather Forecast (ZAMG Salzburg)
Clouds will disperse today, a few hours of sunshine expected. Residual cloud will persist at the start, or fogbanks still linger on the flanks (longest in Niedere Tauern and northern flank of the Alps). Moderate winds, still transporting snow in ridgeline terrain. Temperatures rising during the daytime from -16 to -11 at 2000 m; from -20 to -13 at 3000 m. Light snowfall will set in during the evening.
Short Term Development
Natural avalanche danger will decrease a further notch on Sunday. The situation remains tense for all those in outlying terrain. On Sunday, significant increase in avalanche danger is expected.