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

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.

The fling with wintry weather is not over for Atlantic Canada this week as another low will bring in another round of snow ...

Sustained warm weather has been elusive this spring. When will we feel a change? Lee Goldberg explain in the latest edition of "Weather or Not." ...

A significant disruption to the polar vortex over far Northern Canada will keep the pattern’s influence locked in our neck of the woods like a houseguest overstaying their welcome.

The polar vortex slid toward Europe in recent weeks, ushering in cooler temperatures to portions of Canada A significant disruption to the polar vortex over far Northern Canada will keep the ...

When the polar vortex begins to wobble and allows arctic air to spill south into northern Illinois in January, we usually end up with dangerously-cold air around Chicago. When it happens in April ...