Dozens of small earthquakes have been rattling San Ramon since November. According to a Chronicle analysis completed this ...

Earthquake swarms are clusters of small quakes caused by complex fault systems and underground stress, and scientists say ...

The quake occurred at 4:41 p.m. in Lassen County, about 9 miles outside of Susanville, and had a radius of 15 kilometers and ...

Three minor earthquakes struck near San Ramon, California, within minutes on Friday morning, with the strongest measuring ...

Another minor earthquake struck San Ramon on Wednesday morning, the latest in a series of small quakes in the area, authorities said. The 3.1-magnitude earthquake struck at 11:36 a.m. in the area ...

Findings based on mini “lab quakes” in a controlled setting could help researchers assess the likelihood of future quakes in ...

After months of renovation and repair following the doublet quakes (distinct earthquakes occurring in nearly the same area, ...

Far beneath the polar night, the front of Antarctica’s most feared ice stream is shuddering with a new kind of warning signal ...