A polar vortex collapse could bring cold weather to the UK later this month, the Met Office has warned. The weather forecaster said there is a 70% chance of a sudden stratospheric warming (SSW) ...

Is this stream of cold air "a polar vortex?" Not in the truest sense of ... when a seasonal lack of sunlight begins to make ...

The rapidly changing temperatures in the vortex can force cooler air to sink closer to earth and cause the jet stream to change shape, dramatically changing temperatures in the northern hemisphere. A ...