❄️ Why a weak Polar Vortex brings arctic cold south — brace for colder days ahead 🥶 You’ve probably heard the term “polar vortex” every time winter turns wild… but what is it really? The polar vortex is a huge, persistent pocket of cold air that sits high above the Arctic, spinning like a massive winter cyclone around the North Pole in the stratosphere. Most of the time, it stays strong and stable, keeping the coldest air locked far to the north. But when the polar vortex weakens or becomes dis