The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it ...

Cold fronts start to become more common during late September, but most that move through South Texas are still quite weak.

Summer may end on a cooler note for parts of the U.S., with meteorologists suggesting that a weakened polar vortex could ...

The polar vortex is a large area of low pressure and cold air surrounding the Earth’s poles. Under normal conditions, it spins tightly around the Arctic. However, as the Arctic warms, this system ...

La Niña is expected to return this winter—and that could reshape the season across the United States. With a 71% chance of ...

The polar vortex is Earth's frozen guardian—but that guardian is starting to fail. This video dives into the science behind the vortex’s destabilization and the global consequences we could face, from ...

La Niña will be emerging and will likely persist into winter, favoring a weather pattern with above-normal temperatures and ...

It's already a lot to endure frigid winter conditions, but what happens when we get an unwelcome visit from an even colder spell of air like a polar vortex? "A polar vortex is simply that: a vortex ...

CHICAGO (WLS) -- "Polar Vortex" is a dreaded term that we all have become accustomed too over the past few years. But what is it? The polar vortex is always present in the Arctic Circle. It is a broad ...

A rare glimpse into the wintry conditions of Mars’s north polar vortex has shown that temperatures inside the vortex are far ...