Telegraph: As the hardest hit areas enjoy a respite from snow today, and ice becomes the main danger, experts say this wintry blast is the result of a phenomenon called sudden stratospheric warming -- and they warn that its effects could last for up to a month more.
"This is a major event in the stratosphere, and it's driving the cold weather,' said Adam Scaife at the Met Office.
"The lower stratosphere will be perturbed for weeks, and it's pushing the chances of further cold and easterly winds well into...