When the polar vortex stretches, North America feels the chill. New research reveals some of the stratospheric patterns controlling these cold snaps.

Utah's Bureau of Land Management released a video on Monday (July 14) which it said showed a fire vortex forming from the Deer Creek wildfire outside of La Sal in the western U.S. state.

There are more ways than we knew for the stratospheric polar vortex to get disrupted, shooting cold air southwards across ...

KERRVILLE, Texas—Families sifted through waterlogged debris Sunday and stepped inside empty cabins at Camp Mystic, an all-girls summer camp ripped apart by flash floods that washed homes off their ...