A strong earthquake measuring 6.5 magnitude struck off the coast of Sanriku in northern Japan on Thursday, raising concerns across the region as the tremor was felt in parts of northeastern Japan.

The seismic event occurred approximately 122 kilometers east of Yamada, in offshore waters along the Pacific coast.

Conflicting Data from Monitoring Agencies

USGS and JMA report shallow quake

According to the United States Geological Survey (USGS) and the Japan Meteorological Agency (JMA), the earthquake occurred at a relatively shallow depth of around 9.5 to 10 kilometers.

Shallow earthquakes are typically more likely to be felt at the surface and can cause stronger ground shaking, even when located offshore.

Alternative readings from India’s NCS

India’s National Center for Seismology (NCS) provided slightly different data, reporting the quake as magnitude 6.3 with a depth of approximately 60 kilometers.

The NCS also placed the epicenter in the North Pacific Ocean, around 517 kilometers northeast of Tokyo, highlighting the variations that can occur between global seismic monitoring systems.

Tremors Felt Across Northeastern Japan

Wide regional impact

Due to its shallow depth and offshore location, the earthquake was felt across several parts of northeastern Japan, particularly along coastal regions.

Residents reported noticeable shaking, although no immediate reports of major damage or injuries were issued at the time of initial assessments.

Ongoing Monitoring and Risk Assessment

Authorities remain on alert

Japanese authorities and monitoring agencies continue to assess the situation, keeping a close watch for possible aftershocks or secondary hazards.

Japan, located along the Pacific Ring of Fire, frequently experiences seismic activity, and its advanced early warning systems play a crucial role in minimizing risks and ensuring public safety.