The mechanism involves atmospheric waves that bounce between the upper atmosphere and ground level, amplifying weather patterns and making them more extreme. Scientists call this “stratospheric wave ...

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 ...

This winter, with record snow in New Orleans and drought and destructive wildfires in Southern California, has not been normal.

The condition of the polar vortex influences everyday weather around the globe. Scientist issue warning about concerning ...

The Northern Hemisphere's polar vortex regularly expands over winter, sending a blast of cold air south with the jet stream, according to the National Weather Service.

ABC13 Meteorologist Elyse Smith explains the weather pattern that led to the catastrophic flooding event in central Texas ...

Charlottesville and much of central Virginia were under an extreme heat warning Tuesday, with temperatures predicted to stay ...

This phenomenon has also already struck Europe and China this summer, leading to the temporary closure of the Eiffel Tower and worries about wilting rice crops, respectively ...

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

It’s not the first instance of unusually high temperatures in what many consider the nation’s coldest state, but the National Weather Service only recently allowed for heat advisories to be ...