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

Stratospheric warming high above Antarctica could cause the Southern Hemisphere’s polar vortex to weaken at an unusually fast ...

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 ...

The tenth and coldest polar vortex of the season is blasting across the US this week. More than 58million Americans are under ...

Severe storms have unleashed tornadoes and hail across parts of NSW and dumped more than a month’s worth of rain in one day ...

Weather analysts are divided over the polar vortex’s influence on weather and what that means for the rest of this year’s winter. The polar vortex is an area of low pressure and cold air that ...

Brace yourselves; winter is coming. "Polar vortex" may have been the weather catchphrase of last winter, but it's coming back and it's bringing snow and freezing temperatures along with it. While it ...