The heat wave that is engulfing much of the western U.S. right now is unprecedented. This area, also known as a ridge because of the northward humps in the jet stream that the phenomenon is ...

Unusual March heat has pushed temperatures into record territory in parts of the West. More extremes are expected in the days ...

Many spring training games are delaying their schedule to a 6 p.m. start, and other events are taking safety steps.

And that same day, the temperature just outside Martinez Lake, Ariz., reached 110 degrees F (43 degrees C)—the highest March temperature ever recorded in the U.S. The heat wave that is engulfing much ...

Scientists say a record-smashing March heat wave in the U.S. Southwest shows climate change is already driving more dangerous ...

The recent trio of extreme wildfires, record-breaking rains and historic heat can all be tied to climate change, says one Southern California climate scientist. The unprecedented ongoing heat wave is ...

The National Weather Service found itself issuing warnings for both extreme heat and dangerous cold across different parts of ...

A massive Western heat wave and a potential El Niño event raise concerns about a long stretch of unpredictable and extreme weather.

Several of the Earth’s systems are changing faster than predicted as global temperatures rise, scientists say.

Southern weather isn’t for the faint of heart, so our homes need to be able to stand up to whatever Mother Nature throws our ...