Earthquakes and seismic activity often happen with sudden movements underground with tectonic plates. Seismographs are used by scientists to measure the time, location and strength of an earthquake. Magnitude illustrates the strength of an earthquake ...

More than a dozen aftershocks followed a 3.9-magnitude earthquake that struck the Inland Empire Saturday — a quake that was felt by many and reported just 30 minutes after a 3.5-magnitude quake rattled the same area. The first temblor was reported at 10: ...

Three earthquakes of varying magnitude hit Barstow, Calif., roughly halfway between Los Angeles and Las Vegas U.S. Geological Survey A 4.9-magnitude earthquake rattled Southern California on Monday, July 29. The trembler originated 22 kilometers (about 13. ...

DeeperDive is a beta AI feature. Refer to full articles for the facts. MEXICO CITY - A 6.5-magnitude earthquake rattled Mexico’s capital and a tourist hotspot on the Pacific coast on Jan 2, killing at least two people and causing moderate damage in a ...

A 4.4-magnitude earthquake struck about 2.5 miles south of the Los Angeles neighborhood of Highland Park Monday, according to the U.S. Geological Survey. It was reported at about 12:20 p.m. and felt throughout L.A. County in areas including Pasadena and ...

A 7.7 magnitude earthquake Monday off northern Japan sparked a short-lived tsunami alert and an advisory of a slightly higher risk of a possible megaquake.

The Japan Meteorological Agency said a tsunami of up to 10 feet could strike after the 7.7 magnitude earthquake.