update today 7:30 (Bernhard Niedermoser - translated by Jeffrey McCabe)
Danger increasing further, will reach HIGH with storm, also naturally triggered avalanches
Fresh snow by evening (20-40 cm, 50 cm in barrier cloud regions), zero visibility and from midday storm winds above 1800 m. New drifts and those of Friday trigger-sensitive. On many steep slopes in all aspects, near to and distant from ridgelines, one person can trigger an avalanche. In heavily wind-loaded zones (NE to S) above 2000 m isolated larged-sized releases can trigger naturally.
Avalanche danger in the Northern Alps above 2000 m is HIGH (4) right from the start today. In the other mountain ranges it is initially CONSIDERABLE (3) but will increase to HIGH (4) as of midday. In the Lungau Nockberge, danger will remain CONSIDERABLE (3).
Yesterday, Saturday, wide ranging snowdrift accumulations which have formed since Tuesday settled somewhat, their trigger-sensitivity diminished slightly. However, during the night in the Hohe Tauern, foehn wind raged. With the arrival of a cold front, winds this morning shifted to northwesterly and an additional 25-50 cm of fresh snow will still be added to it. As of about midday, storm-strength winds will set in, which will massively transport the entire fresh snow which has fallen since Friday.
Alpine Weather Forecast (ZAMG Salzburg)
Today, Sunday, dense fog. Winds to begin with will be moderate, as of midday will intensify to storm strength above the treeline (80-100 km/hr) accompanied by heavy snowfall from the north. Overall, 25-50 cm of fresh snow is anticipated in the Northern Alps in the next 24 hours. Temperatures will drop: at 2000 m from -9 to -13 degrees.
Short Term Development
On Monday/Tuesday a warm front will arrive. Strong warming impulses are expected. Plus, compacted fresh snow will be deposited atop the loosely-packed, cold snowfall of today. It will be highly prone to triggering (naturally triggered avalanches!). On Monday, in all likelihood, HIGH AVALANCHE DANGER over widespread areas. As of mid-week, conditions will be stabler.