Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Colorado will see its coldest temperatures of the winter as a mass of cold air descends on the state from the Artic. But despite the bitter cold, this weather event is not a polar vortex.

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

A powerful arctic cold front arrived in Colorado on Friday and will keep the state very cold until Wednesday. The 9NEWS Weather Impact Team has issued 9NEWS Weather Impact Days for Saturday ...

Colorado weather: Forecast, road conditions, closures, Denver International Airport delays as extreme cold temperatures hit the Denver metro from a polar vortex of arctic cold.

Tuesday morning will be cold enough to delay the start of school for some districts on the Front Range.

Colorado will see its coldest temperatures of the winter as a mass of cold air descends on the state from the Artic. But despite the bitter cold, this weather event is not a polar vortex.

Denver is soldiering through a blast of freezing cold and snow Saturday morning, as winter weather generated by a polar vortex continues to hit the Front Range. National Weather Service ...

Cohen and his co-authors suggest Arctic change favors more polar vortex disruptions, which can trigger more severe winter weather for weeks. Looking ahead several decades, the picture is more ...

These polar vortex stretches are happening more frequently as the world — and especially the Arctic — warms, a 2021 paper published in the journal Science, also co-authored by Cohen, demonstrated.

Some of the coldest temperatures are expected in Montana, and avalanche warnings have been issued in Utah, Colorado and Washington.