Multiple earthquakes shook Southern California hours after a tremor was felt on the East Coast on Aug. 5, according to data from the U.S. Geological Survey. One quake hit Rialto, California, in the ...

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 ...

A magnitude 4.4 earthquake hit Southern California on Thursday morning, according to the U.S. Geological Society.

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 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 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 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.

Estimates of the chance of a magnitude 8.0 or greater earthquake hitting California in the next three decades have been raised from about 4.7% to 7%, the U.S. Geological Survey said Tuesday.