I have been building a theory over the last few months… and this is fitting in rather nicely.
You know how the last few summers have been pants since the Jet Stream has been pushed south during the summer into a more Autumnal position, driving in Autumn and Winter type storm patterns… I figured that if it moved to that position as it's default then in our winter it could push further south giving our winter weather to southern Europe, and giving us more of a Scandinavian style weather pattern.
My reasoning – Climate Change is putting more energy into the atmosphere, which is increasing wind speeds. The Jet Stream flows around the planet, so if you increase the speed it gets pushed "out" and hence moves down more towards the equator… and lets the arctic air into northern Europe.
It's probably wrong, but it's a bit of a hunch that has been niggling me for a while. If I am right in this, and the next few winters are the same… I am getting me a Skidoo!