A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation shows the vortex also moved away from the Arctic towards Europe. A major ...

Several days with temperatures of 10-20 degrees below the historical average could be dangerous to plants and ruin outdoor ...

Brrr, January 2025 is bringing some serious chill! 🥶 Dive into the science of the polar vortex and learn what’s behind this ...

A "major disruption" has recently rocked the Arctic polar vortex, causing it to weaken and reverse direction from west-to-east to east-to-west. Amid the chaos, the vortex shifted off the pole and ...

When the polar vortex begins to wobble and allows arctic air to spill south into northern Illinois in January, we usually end ...

The Old Farmers Almanac has predicted the last frost dates across the U.S. for 2025 -- and some in the Chicago area might be ...

Andrew Freedman has been hired by CNN Climate & Weather as a senior reporter. Previously, Freedman served as a senior climate ...

"The large polar vortex disruption from the second week of March is playing a key role in next week’s eastern US cold snap," meteorologist Judah Cohen of Atmospheric and Environmental Research told ...

Don't put away those winter coats just yet. An April cold snap is forecast for much of the eastern half of the U.S. early next week, forecasters said, with freezes likely across portions of the ...