The term “polar vortex” might conjure images of mythical icy storms swirling through the North Pole but in reality it’s a ...

However, the especially low temperatures seen in parts of the US this month can be partially attributed to another phenomenon: the polar vortex. The polar vortex is a low-pressure system of cold ...

A satellite image shows the entry of a large area of low pressure, from the Polar Vortex, into the Northern ... to record highs. Paris has been 3.5 degrees below normal and Madrid 6.9 degrees ...