A Chronicle analysis found parts of Napa and Solano counties generally have the most extreme temperature swings between seasons in the Bay Area, based on data averaged over 1991 to 2020. The smallest ...

The state is confronting what officials say is an unprecedented confluence of forces that will test its long record of ...

Emma Pattee explores what might happen to a woman during the Cascadia Earthquake, in “Tilt.” Like the San Andreas Fault, the ...

Over the Sierra crest — about 150 miles to the east of Manteca, Oakdale, and Turlock — is one of the world’s largest active ...

In every city studied, at least 20% of the urban area is sinking – and in 25 of 28 cities, at least 65% is sinking. The ...

A major fire broke out at the Mission Villa Apartments on Tuesday afternoon, leaving six residents displaced and one person | ...

A city has experienced back-to-back earthquakes. The region sits on top of an ancient fault line that formed 30 million years ...

A recent forecast warned that "most" wildfire activity in California is expected later in the year as the state continues its ...

Yellowstone contains about 120 thermal areas that collectively are home to more than 10,000 thermal features, like hot ...

An unlikely US states was rocked by a magnitude 3.0 earthquake today, spawning more than 150 reports of shaking. As of 3:20pm ...

This article has been revised and corrected from the original version. Parallel Systems, a downtown Los Angeles-based company ...