“The stratospheric sudden warming can sometimes cause the jet stream to ‘snake’ more, and this tends to create a large area of blocking high pressure,” the forecaster said.
Such blocking patterns typically establish themselves over the North Atlantic and Scandinavia, according to experts.
The consequence for northern Europe, Britain included, would be an extended period of dry, cold conditions.
Southern parts of the continent, by contrast, would likely experience milder, wetter and windier weather.
