Mount Etna in Sicily has been blowing spectacular ‘smoke rings’ into the sky since Wednesday. The volcano, which towers over the historic port city of Catania, is the largest in Europe and one of the ...

A live camera at Hawaiʻi’s Kīlauea volcano captured a rare sight this week — a swirling “volnado” forming next to a fountain ...

NORMAN, Okla. – Thunderstorms above Oklahoma sculpted a seldom-seen spectacle in the sky Friday morning. The formation of a horseshoe vortex cloud was witnessed in Norman by storm chaser Connor ...

The polar vortex rages in the arctic during the winter, producing winds up to 150 miles per hour. But when that vortex weakens, arctic air escapes to more southerly latitudes, which creates ...

With the bitter cold of winter descending upon the U.S., one may question what is responsible for this upcoming period of below-average temperatures. In short, the answer is the polar vortex. But what ...

This is the moment a local witnessed two waterspouts in China. The man, aboard a boat, spotted the tornadic whirls while passing by the sea in Beihai, Guangxi, China, on July 7. Footage shows the ...

Atmospheric scientists were surprised earlier this month to notice that the Arctic's polar vortex reversed its trajectory as it began spinning in the opposite direction. What's more: It has yet to ...