Moderate M5.8 earthquake strikes near Toride, Japan

A moderate M5.8 earthquake was recorded at 17:00 UTC on August 22, 2026, approximately 4 km (2 miles) north-northwest of Toride, Japan, at a depth of 77.6 km (48.2 miles). The earthquake was centered at coordinates 35.9°N, 140.1°E.

The event occurred inland in the Kanto region of eastern Japan, close to the urban center of Toride. This area is part of the Greater Tokyo metropolitan region, which is known for its dense population and proximity to major cities and towns.

Given the metropolitan and regional context, critical infrastructure in the vicinity could include roadways, rail lines, energy distribution facilities, water resources infrastructure, and commercial and residential structures.

As the earthquake’s epicenter was inland, there is no tsunami threat associated with this event, based on its location and available data.

The significance index is 518 (on a scale that runs through 1 000), based on magnitude, available data, and estimated impact.

Japan sits at the intersection of several tectonic plates, including the Pacific Plate and the Philippine Sea Plate, making the region one of the world’s most active seismic zones. Earthquakes of moderate magnitude are not uncommon, particularly in and around the greater Kanto area.

This information was last updated at 17:19 UTC on August 22, 2026.