The stratospheric polar vortex is entering its seasonal collapse. But that doesn’t mean calm weather is coming. What's ...

Add Yahoo as a preferred source to see more of our stories on Google. It still feels summery in Mississippi with daytime highs in the 80s and relatively high humidity. But nights are getting a hint of ...

Add Yahoo as a preferred source to see more of our stories on Google. You’d be forgiven for being skeptical of a cold, snowy December. Recent years have often brought late starts to winter. The last ...

The Earth's polar vortex is stirring up, bringing the first hints of changing weather as the autumn foliage starts to turn and the temperatures begin to drop. The movement means gradual cooling and a ...

The arrival of winter weather across Tennessee is due to a shifting polar vortex sending Arctic air into the central and eastern United States, and this is only the first round of three. The first ...