Snow line
Now it's getting extremely tricky, because it's extremely difficult to predict. First it will be very low in the west this morning, then it will rise rapidly in the northwest and will even be between 1800 and 2200m tomorrow, depending on the foehn. In the inner Alps, however, it can look quite different in the Rhone Valley and on the border between Lower Valais and France, for example, with intense precipitation and snow up to 1000m or lower.
In the southwest in the congestion of the French Hautes Alpes southwest of the Ecrins and the Maritime Alps, it will also go up, but will probably stop somewhere at 1400-1800m, depending on how protected you are in the inner Alps. I don't know whether there are also places where it will stay lower.
It will be exciting in the south, because large parts of the precipitation in Ticino will also fall as snow below 1000m and the snow line will probably not rise any higher until Tuesday. Further east, the whole thing will gradually rise, in the Dolomites the limit is between 1400 and 1800m and in Slovenia it will probably also rain up to 1800-2000m. Will there be hidden valleys somewhere along the way where it stays lower? Who knows.
If I'm off the mark here, that's to be expected.
From Tuesday, the snow line will drop again as colder air flows in from the north. The full alert amounts will only come at the very top.
The amounts
It's going to be violent, young Ullrwan. The oracle's crystal ball is pretty freaky. However, the following amounts are totals without settlement. The increase in snow cover will probably be around 60-75% of the new snow totals with such heavy amounts, but not necessarily if there is significantly more accumulation.
Widespread snowfall of 70-110 cm from the lower Valais via France to Slovenia.
In the core in the southwest, 120-150 cm is likely in the Maritime Alps and especially in the Ecrins reservoir, according to models, and 160-180 cm would also be possible in isolated cases. However, there may be some downward surprises here, as the models tend to overestimate the Maritime Alps/Hautes Alpes. In the Upper Engadine - Adamello core it will probably be 100-130cm and we may see 150cm. I also see upward surprise potential here.
It's getting pretty crazy in the southeast in the border triangle, where all models are simulating 150-200cm of snow above 1800-2000m. I would also consider 3m possible in the Julian Alps in a stagnant situation. The models like to exaggerate in this area and it can also be significantly less, but I wouldn't rule out surprises at the top (!!).
