Magnitude 4.1 earthquake strikes 281 km N of Ama, Japan

A magnitude 4.1 earthquake was recorded at a depth of 459.817 kilometers on July 19, 2026, at 01:40:05.933 UTC. The United States Geological Survey (USGS) placed the epicenter 281 kilometers north of Ama, Japan, at coordinates 38.6177 latitude and 133.4192 longitude.

Earthquakes are sudden movements of Earth's crust caused by the release of accumulated stress along fault lines. The magnitude is a measure of the energy released at the earthquake's source, often calculated using seismic waves detected by a global network of seismographs. Depth indicates how far below the Earth's surface the seismic event originated. The USGS provides these measurements to monitor and report seismic activity worldwide.