After missing the last snowfall only because I was away from the internet, here's a new alert (editor's note: we'll be using strict precautionary measures to prevent the oracle's internet absence in future!)
Where is this south?
Mainly it will affect the areas to the south and west of the Alps, but as the cold front is affecting precipitation across the entire Alps, there will be snow on both sides of the Alps. Due to the size of the affected area - The Alps themselves, right? - I will only make rough classifications. The good news first in the form of a hit: there's still a base, there's still a base! Except for the south, but there never was any. Then point 2: The snow line is not quite as high as last week and will drop from around 1500-1700 m to 1000-1200 m as the cold front passes through.
The amounts
With a southwesterly current, a lot of moist air is rushing towards the Alps from this afternoon (10.4.2012), bringing us Ullr's soft white greeting. This current will first hit the French Alps (especially the Maritime Alps) and then the entire southern slope of the Alps from Ticino to Slovenia.
In general, a good 25-45 cm will fall in the backwater regions in the south, but the largest amounts of up to 70 cm could accumulate in parts of France tonight (10.4.2012) and later in the Italian-Slovenian region, according to the models.
Because the cold front is quite active, regions in the central Alps and along and north of the main ridge should also be looking forward to 15-30cm, which is particularly nice because it will fall on top of the weekend's snowfall and the existing base, which is rather poor in the south.
Medium term
In the medium term, it looks damp and cool for the time of year, which should be a welcome change from the Spanish April weeks of recent years. So it's finally time to go powdering again, even if Ullr has been on vacation for 8 weeks after the winter dream start.
Powder to the people!