Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at the greater Philadelphia region, leading to a turbulent weather pattern ...

There is a large atmosphere of cold air that normally circulates in the Arctic. During winter, scientists have often monitored this Polar Vortex region because of a familiar pattern; whenever it gets ...

Another brutally cold weekend is on the way as a piece of the Polar vortex dips out of the Arctic Circle, sending frigid air across half of the United States while the other half warms up. Texas will ...

Another round of bone-chilling air from the polar vortex could invade the central and northeastern US this weekend and potentially produce the first significant snowstorm of the season for the ...

Ready for some serious cold? The planet's most extreme cold air will be barreling into the central and eastern United States this coming weekend "like a wrecking ball," said Weather Trader ...

Add Yahoo as a preferred source to see more of our stories on Google. A map of the polar vortex that is bringing frigid temperatures to parts of the U.S. (AccuWeather) The first of three rounds of ...

A "triple dip polar vortex" is expected to bring frigid temperatures to the central and eastern U.S. Colorado is not expected to be impacted by the polar vortex systems. A separate northwest system ...

A shifting polar vortex is expected to bring three waves of Arctic air to the central and eastern U.S. Tennessee is forecast to experience winter weather, including a mix of snow and ice, in early ...

The weeks after Thanksgiving might just be a tease for some intense Arctic cold that could arrive later in December. So, cold weather lovers — your time appears to be approaching. And snow lovers, the ...

High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway. Over the next 10 days, changes in the stratosphere will upend weather ...

The AAIB found the seat’s safety pin was not fully installed and the previously disconnected harness chest strap caught on and inadvertently actuated the seat’s handle. The deceased instructor pilot, ...