The Rhine valley is well known as a föhn area. Föhn is a warm and strong wind that can turn into devastating storms, mostly due to the heavy impacting squalls. The following is an excerpt of what Wikipedia says:
A föhn or foehn (UK: /fɜːn/, US: /feɪn/) is a type of dry, warm, down-slope wind that occurs in the lee (downwind side) of a mountain range.Föhn can be initiated when deep low-pressure systems move into Europe, drawing moist Mediterranean air over the Alps.
It is a rain shadow wind that results from the subsequent adiabatic warming of air that has dropped most of its moisture on windward slopes (see orographic lift). As a consequence of the different adiabatic lapse rates of moist and dry air, the air on the leeward slopes becomes warmer than equivalent elevations on the windward slopes. Föhn winds can raise temperatures by as much as 14 °C (25 °F) in just a matter of hours. Switzerland, southern Germany and Austria have a warmer climate due to the Föhn, as moist winds off the Mediterranean Sea blow over the Alps.
The Föhn can also cause bad headaches, migraine, nausea, and problems with the circulation due to the quick change of the weather and the air pressure.
However, two days ago, the Föhn set in. Within only 24 hours, the snow (from close to 3 feet) was gone almost completely. The temps have risen from below -12°C (10.4 °F) to 14°C (57.2 °F) right now. I thought you might be interested to see the quick change:
Photos from Sunday:
Thursday (four days later, same time of the day, one day and 24 hours after the Föhn started):
Friday morning (about 36 hours after the Föhn started):
Notice and compare the photos from the street, the bench, and the barbecue grill. That’s our area: usually alpine climate, but once the Föhn shows up, it feels like spring. But once the Föhn breaks down, a bad weather front follows. When it happens in winter, that mostly means snow again. And that front may arrive by tomorrow morning.
In Love and Light