No reports of major injuries or structural damage have emerged, and authorities have not issued a tsunami warning.

A swarm of at least a dozen earthquakes reaching up to magnitude 3.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports. The other quakes in the Saturday, Dec. 21, swarm ranged ...

A 4.5 magnitude earthquake struck off the coast of Oregon early Sunday morning, according to the U.S. Geological Survey. The ...

The U.S. Geological Survey said two small earthquakes were recorded near Lynn Saturday evening, the first at 5:20 p.m. and a ...

CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.1 magnitude quake struck near San Ramon Sunday morning.

Earthquakes of magnitude 4.0-4.9 are considered “light.” Such quakes off the Oregon coast are common. At least five, spanning ...

Two earthquakes struck the San Ramon region Saturday night, just one day after a swarm of six quakes shook the area, authorities said. The first earthquake, a magnitude 3.9, hit at 6:31 p.m., ...

The U.S. Geological Survey reported a magnitude 3.2 earthquake at 10 a.m. near Basin Butte, about 10 miles northwest of ...