Current situation and outlook
The Sudden Stratospheric Warming (SSW) announced in the last WeatherBlog has largely materialized. The troposphere is reacting and the large-scale pressure distribution that has developed over the last few days can be seen, at least in part, as a response to the SSW. The meandering of the jet stream around pronounced high and low pressure centers is typical, as are the late winter cold air outbreaks, as is currently the case in Canada and the eastern USA. Between Greenland and Iceland lies a pronounced high pressure system that blocks the Atlantic westerly drift. To the east of this lies an elongated area of low pressure that stretches diagonally from Scandinavia to Spain.
The (more or less) same constellation already caused snow in the southwest and south föhn in the northern Alps at the weekend and is bringing more snow to the southern slopes of the Alps these days. We'll leave the details to our colleague Orakel - we're expecting another alert today. Basically, the southstau-south föhn combination will continue with corresponding precipitation focal points on the southern slopes of the Alps. Not much will arrive in the northern Alps, the best chances are in the western Alps near the main ridge. Temperatures have normalized somewhat compared to last weekend (+20°C in some valleys!), but will remain very mild, especially in the Föhn areas.