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 ...

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

After the polar vortex made its most dreadful and intense appearance in New York City this past winter, spring is finally in ...

The polar vortex of ultra-cold air usually spins around ... Virginia, West Virginia, Illinois and Missouri, according to electric utility tracking website PowerOutage.us. In Virginia's capital ...

A massive storm developing today is set to bring life-threatening tornadoes and potentially historic floods in what could be ...

Due to the vulnerability of her situation, this person’s name has been changed to protect her privacy. QUINCY — Natalie ...

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

An April cold snap is expected to bring unusually cold temperatures to the eastern half of the US next week. The cold snap could impact new spring vegetation and lead to frost in some areas.

"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 ...

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.