This is different than Francis’ research on the jet stream and the polar vortex that induces winter extremes, said Mann. There’s also a natural connection.

A new study challenges the idea that climate change is behind the erratic wintertime behavior of the polar jet stream, the ...

Obviously this isn't the first polar vortex episode of the winter, but it looks to be the most severe." FILE - A person walks along the shore of ice covered Lake Michigan, Feb. 13, 2025, in Chicago.

Every year, weather enthusiasts eagerly watch and wait for signs that the polar vortex, a mass of cold air spinning around the Arctic, might meander south, sending cold and snow into the lower ...

Since the Ice Ages, the Polar Vortex has acted as a climatic gatekeeper. When breached, it unleashes freezing air into ...

The polar vortex is an area of low pressure and cold air circulating around the poles in the stratosphere — a layer in the ...

The polar vortex that has dealt the most brutal winter to much of the US in recent years is about to be broken down – but not before unleashing a late-season cold and the biggest yet.