According to a recent studypublished in JGR Solid Earth, nearly half of California’s fault lines—including the infamous San ...

Unlike other earthquake-prone places around the planet, California is overdue for a major quake, according to a recent study.

California is preparing for the annual ShakeOut earthquake drill ... and officials warn that prior seismic activity does not necessarily mean more powerful temblors are imminent.

The Great ShakeOut drill comes amid a week of earthquake activity in California. Tuesday marked 34 years since the Loma Prieta earthquake, which hit Northern California on Oct. 17, 1989 ...

About 5% to 10% of all California earthquakes are followed by a larger one within a week, and the probability of a larger quake depends on how much aftershock activity there is, according to the USGS.

California earthquakes are a geologic inevitability ... 2018 was just the latest reminder of major seismic activity along the Pacific Rim. Tragic quakes that occurred in 2017 near the Iran ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Monday’s 4.4 magnitude earthquake that ...

“You’re going to have some variability in these earthquakes.” While the recent heightened activity doesn’t increase the odds of Southern California getting hit with a large, damaging ...

The San Andreas Fault system, which stretches nearly 1,300 kilometers, generally takes center stage when it comes to California’s earthquake activity. That’s where, as the Pacific tectonic ...

This map from the U.S. Geological Survey shows the area of Southern California rattled ... about what leads up to a large earthquake. Some say there’s more activity before a major quake, others ...

One of California’s riskiest volcanoes has ... Generally speaking, changes in the shape of the ground and earthquake activity are commonly observed before eruptions — but those things do ...

California has experienced four earthquakes in less than 12 hours. The seismic activity began around 9pm ET when a 3.5 magnitude hit outside of Little Lake. The US Geological Survey (USGS ...