Something unsettling is happening in the skies after dark. Meteorologists, climate scientists, and emergency managers are increasingly alarmed by a pattern that doesn't follow the old rulebook: ...

Nearly every type of wild weather hit some part of the United States on Monday as the normal changing seasons clash of cold and warm air collided with a jet stream gone crazy and a possible dash of ...

Add Yahoo as a preferred source to see more of our stories on Google. A split jet stream over the Pacific Ocean will help amplify a ridge of high pressure near the West coast, keeping California warm ...

The United States is experiencing extreme weather conditions ranging from record-breaking heats in the Southwest to Arctic chills in the Midwest and East. Meteorologist Marc Chenard highlights a ...

After our mid-week temperature drop, there is strong signal for a few additional weather systems to track through the Upper ...

A drastic weather pattern change is about to induce an acute case of weather whiplash.

Winter featured record-shattering warmth in the West and bitter cold in the East. But now, the opposite pattern is set to ...

A major winter storm is impacting much of the nation east of the Rocky Mountains. The storm's intensity is caused by a combination of a stretched polar vortex, a wavy jet stream, and moisture from the ...