WASHINGTON — Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that will send much of the United States a devastating dose of winter weather later ...

To say that January has been a tumultuous month weather-wise would be an understatement. The month has featured a string of severe winter storms, wild temperature swings and even a few bouts of ...

Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit that is expected to provoke teeth-chattering but not be record-shattering.

ANNAPOLIS, Md. -- The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances of freezing weather through much of the country.

The polar dance that caused snow to fall across the South in January has been studied for decades, but scientists still hope to answer many remaining questions. Miles above the Earth, two bands of ...