Shown above is the European model's potential vorticity (PV) forecast for 10 days away at the isentropic level of 380 K. The isentropic level is a fancy name for just another layer of the atmosphere. 380 K translates to roughly 200 millibars- essentially the jet stream. In areas of heightened potential vorticity, low pressure centers are found. These charts are useful in identifying pieces of the polar vortex in the wintertime when they can split, like this situation.
The above image portrays a solid piece of the polar vortex journeying south into Europe in the 10 day forecast in time to introduce potentially harmful cold. We aren't talking about some stronger than normal low pressure system, this is a piece of the polar vortex here. If we do see it come south, temperatures could go down well below 0 (Fahrenheit) in many locations across the continent.
Now, depending on how long this vortice stays in place, which I don't believe will be a long time due to a more progressive atmospheric pattern, the intensity of the cold could grow. However, as a result of that progressive-ness and the fact that the vortex is too weak to hold any bone-shattering cold, this should not be as harmful as it comes across to be. However, the elderly and young may need to be watched during the 10-14 day period if this does come to fruition, because cold is cold, and serious cold can be harmful.