Magnitude 4.6 earthquake strikes 78 km WSW of Puerto Casma, Peru

A magnitude 4.6 earthquake occurred on Thursday, July 23, 2026, at 02:55:40 GMT. The United States Geological Survey (USGS) reported the seismic event's epicenter at a depth of 62.203 kilometers, located 78 kilometers west-southwest of Puerto Casma, Peru. The coordinates for the earthquake were -9.6602 latitude and -79.0735 longitude.

The USGS measures earthquakes using seismographs that detect ground motion. This data is then processed to determine key parameters such as magnitude, location, and depth. Magnitude describes the size of the earthquake at its source, measured on a logarithmic scale. Location specifies the epicenter, the point on the Earth's surface directly above where the earthquake originates, and depth indicates how far below the surface this origin point is.