Parts of Texas are likely to be hit with unusually cold temperatures as a polar vortex looks set to push frigid winds across the country. Some forecast models have suggested lobes of the polar ...

BISMARCK, N.D. (AP) — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies ... border to Oklahoma and central Texas, where the Arctic front was ...

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

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

The coldest burst of Arctic air this season is coming to put an icy exclamation point on America’s winter of repeated polar vortex invasions, meteorologists warn. And it will stay frozen there ...

A sudden stratospheric warming event reversed the winds that make up the northern polar vortex on March 9. A new animation ...

"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 ...