Lightning near the North Pole reveals dramatic climate changes as Arctic temperatures rise and storms intensify.

Thunderstorms above Oklahoma sculpted a seldom-seen spectacle in the sky Friday morning. The formation of a horseshoe vortex ...

Thunderstorms above Oklahoma sculpted a seldom-seen spectacle in the sky Friday morning. The formation of a horseshoe vortex ...

The warming hole might be a sign that Atlantic Ocean currents are slowing down. This network of currents regulates Earth's ...

The word “supercell” may sound like hype, but they are real thunderstorms with rotating updrafts that can have serious ...

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

The 100th meridian marks a dividing line between moist climates to the east and arid climates to the west. Climatologists now ...

Andrew Freedman has joined CNN’s climate and weather unit as a senior reporter, the network announced April 21, 2025.