“An anomalously strong ridge of high pressure centered over the Four Corners states will lead to a significant heat wave,” the National Weather Service said in a national forecast discussion Tuesday.

A long stretch of humid heat followed by intense thunderstorms is a weather pattern historically seen mostly in and around ...

Southern California is bracing for a "several day heat event" beginning Wednesday that will bring dangerously high temperatures and elevated fire danger through the weekend, prompting state officials ...

Devastating wildfire, flooding and extreme heat events took place over the past year, several resulting in mass fatalities.

An extreme heat warning has been extended for parts of Los Angeles this weekend when widespread triple-digit temperatures, fire weather warnings and possible thunderstorms are in the forecast. Expect ...

An excessive heat warning is in effect for much of Oregon's populated areas, including Portland, Salem, and Eugene. Temperatures are expected to reach the mid-90s, with nighttime temperatures ...

The weather in Phoenix was often unpredictable, with an unexpected series of fall rainstorms and a sudden December heat wave.

The Southwest is in for peak dog days as a looming heat wave has triggered extreme heat warnings and advisories for 80 million people from the U.S.-Mexico border to southwest Utah. “An anomalously ...