Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data ...

Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data ...

The quakes struck near Rialto, Ontario and Lytle Creek in San Bernardino County, producing weak to light shaking, according ...

The earthquake followed a pair of smaller earthquakes in the Inland Empire. At 8:34 a.m., a 3.0 magnitude earthquake hit ...

A light, 4.3-magnitude earthquake struck in Southern California on Thursday, according to the United States Geological Survey ...

The National Weather Service issued a tsunami watch for the West Coast after an earthquake struck off Russia's Kamchatka ...

The United States Geological Survey (USGS) constantly records earthquakes in the United States, so that both experts and the population at large can know everything about current seismic activity in ...

The chances that California will be rocked by a magnitude 8.0 earthquake or greater in the next 30 years was just bumped up to 7 percent, from 4.7 percent, the U.S. Geological Survey said on Tuesday.

The USGS said Friday it is "closely tracking" a swarm of hundreds of earthquakes that began Thursday in an area near the Sierra Nevada resort town of Mammoth Lakes.

The U.S. Geological Survey reports that the amount of brackish — or slightly salty — groundwater is more than 35 times the amount of fresh groundwater used in the United States each year.