A 3.5-magnitude earthquake struck near Ontario this afternoon, according to the U.S. Geological Survey (USGS). The quake hit at 12:56 p.m. with an epicenter 1.24 miles southeast of Ontario.

But for busy people, here’s a summary of things you should know about what to do before, during and after an earthquake in Japan. If you’re on public transport: Follow the same guidelines ...

The term seismograph usually refers to the combined seismometer and recording device. The first known earthquake detector was invented in 132 A.D. by the Chinese astronomer and mathematician Chang ...

That earthquake changed Northern California forever — causing heavy damage to downtown Santa Cruz, parts of San Francisco, and causing the collapse of sections of Interstate 880 in Oakland and ...

Scientists say that the Cascadia subduction zone off the coast of the Pacific Northwest has the potential to spark a magnitude-9.0+ earthquake ... Other parts of Pierce County in the moderate ...

A preliminary 4.0-magnitude earthquake struck near Ontario this morning, according to the U.S. Geological Survey. The quake hit at 3:51 a.m. Sunday with an epicenter of 2.8 miles northwest of Ontario.

An icon in the shape of a lightning bolt. Impact Link Your phone blares, "Earthquake!" The voice instructs you to duck, cover, and hold on. About 30 seconds later, the shaking starts. At first ...

and parts of San Diego County. People reported feeling the earthquake from Palmdale to San Diego. The USGS asked people to submit reports of what kind of shaking they may have felt — or didn’t ...

Shaking was reported in communities east of Los Angeles early Tuesday afternoon due to a magnitude-3.1 earthquake in Ontario. The quake with a depth of about 3.5 miles was reported at 12:56 p.m ...

A seismic 4.0 magnitude earthquake has rattled parts of Southern California in the early hours of Sunday morning. The earthquake struck at 3:41 a.m. PT in Ontario with an epicenter near the ...

Were you woken up early Thursday morning? An earthquake hit near the San Juan Islands around 4 a.m. The United States Geological Survey (USGS) reported a 4.1 magnitude earthquake hit at 4:05 a.m ...