M 5.1 Earthquake Strikes 115 km East of Yamada, Japan

What Happened

A moderate earthquake with a magnitude of 5.1 mb occurred on March 26, 2026, at 19:55:21 UTC. The seismic event was centered approximately 115 km east of Yamada, Japan. The earthquake has been reviewed by seismologists at the USGS.

Location Details

The earthquake’s epicenter was located at coordinates 39.4439° N and 143.2879° E. It occurred at a depth of 10 kilometers, which is classified as a shallow earthquake. Shallow earthquakes (those less than 20 km deep) typically have a higher potential to be felt by residents than deeper events, although this quake was located significantly offshore.

Impact Assessment

According to the USGS data, there was no tsunami advisory issued (tsunami: 0) following the event. No felt reports were recorded at the time of the report, and no specific alert level color was assigned. Given the distance from the coastline, the immediate impact on populated areas is expected to be minimal.

What You Should Know

A magnitude 5.0 to 5.9 earthquake is classified as a “moderate earthquake.” While these events can cause damage to poorly constructed buildings in direct proximity, the offshore location of this event reduces the risk to land-based infrastructure. Residents in the region should be aware that aftershocks are a routine possibility following a seismic event of this size.

Source

Information provided by the United States Geological Survey (USGS). For more details, visit the USGS event page.