Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

(CNN) — Tropical Storm Imelda formed over the Bahamas Sunday afternoon and is expected to intensify into a hurricane, and while its forecast is less ominous for the Southeast coast, the storm will ...

Chicago is facing a dangerous lake-effect snow event overnight Sunday into Monday morning. A narrow, but extremely intense ...

A strong Pacific storm is bringing soaking rain to Southern California and raising the risk of life-threatening flooding, mudslides and debris flows, especially near burn scars in the Los Angeles area ...

A pair of hurricanes are churning up dangerous rip currents and huge waves along the Atlantic coast and battering Bermuda with a powerful one-two punch. Hurricanes Imelda and Humberto are spinning in ...