The polar vortex is a “constant feature” that begins to develop sometime in September and persists through sometime in spring ...

Winter isn't over just yet. A major shift in the weather pattern could have millions across the United States once again ...

Winter weather lingers as a major shift in the weather pattern could have millions across the United States once again ...

The polar vortex could bring a cold blast to millions across America in the second half of March, AccuWeather said in a media ...

There is a sudden warming about to happen high up in the atmosphere. This warming usually affects the Polar Vortex.

The polar vortex could be reversing in a sudden stratospheric warming event, with the potential to send Arctic air and storms ...

With colder air this week there's also a chance of some wintry showers. Sleet is possible even to low levels across Scotland, ...

A polar vortex collapse is an event that occurs when the layer between 10km and 50km above Earth’s surface warms up to 50 ...