SEATTLE — The weather across the nation is going to extremes. While Western Washington is several days in a row of relative sunshine and above average temperatures, the eastern half of the nation is ...

Bitingly cold Arctic air keeps pummeling the U.S. with ruthless cold snaps—despite warming winters nationwide. A study explains why: the solution lies far above your head, in the upper atmosphere ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

Research shows a strong connection between October snow in Eurasia and the behavior of the swirling wind that contains Arctic ...

The polar vortex, a mass of cold air over the Arctic, is beginning its seasonal strengthening. A strong polar vortex typically keeps the coldest air locked near the North Pole. A weaker or wobbling ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing as autumn has officially arrived. In the short term, this means gradual cool-downs and a more active storm ...

The term "polar vortex" might have recently picked up in popularity, but the natural weather phenomenon has always existed near the Arctic. Known as a large region of low pressure and rotating air ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. That shift is most noticeable in northern Wisconsin, where a frost advisory was in effect early Monday, Sept ...

The Earth's polar vortex is revving up, bringing the first hints at changing weather as fall descends on the U.S. The movement means gradual cooling and a more active storm track across the northern U ...

A sharp change from the recent warm temperatures in Rhode Island, the National Weather Service has posted a freeze watch for the Providence area Thursday night into Friday morning, Oct. 9 – 10, as a ...