Latest GFS model guidance showing some fresh snow is likely to accumate across parts of eastern Europe in response to a very cold airmass advection between deep trough to the east and ridge to the west. Some snow will be possible in parts of Poland and Baltic countries, Czech Republic, Slovakia, W Ukraine, N Austria and Romania. Locally a few cm of fresh snow is possible, while higher elevations (1000m ASL and above) could see up to 30 cm of fresh snow until Tuesday. Strong NW flow into Norway and Sweden should also result on some good amounts of fresh snow through the next two days.
An extensive pool of polar cold airmass will spread across east-central Europe and SE Europe. It is expected diminish by Wednesday when temperatures gradually return into normal values.