From a surprising heat wave in California to blizzards burying parts of the Midwest and storms rolling over the East Coast, chaotic weather put more than half the nation's population in the path of extreme conditions.

An early-season heat wave is impacting nearly 50 million people in the western U.S., while the Midwest and East Coast recover from severe winter storms and tornadoes.

A multi-day storm that brought severe weather to the Upper Midwest section of the United States and canceled thousands of flights nationwide is set to bring still more dangerous winds, snow and possibly tornadoes to the East Coast.

A powerful 'bomb cyclone' storm is set to bring strong winds, travel disruptions, and power outages to New York and the East Coast.

Here’s what to know about the “bombogenesis” of the storm battering the East Coast—and how the snowfall could be historic.

A multiday storm is bringing dangerous conditions to much of the eastern half of the US.

Chaotic weather coast to coast in the U.S. — from unusual heat in California to damaging winds around Washington, D.C. — put more than 100 million people in the path of extreme conditions on Monday.

A severe weather front sweeping across much of the eastern half of the U.S. has dumped heavy snow around the Upper Midwest, spawned thunderstorms in the South and is threatening several mid-Atlantic states with heavy rain and possible tornadoes.