Earthquake in Japan: 37 Injured After 5.9 Magnitude Tremor Near Tokyo

Sunday 23 August 2026 - 08:26

A 5.9 magnitude earthquake shook the Tokyo area from Saturday night to Sunday, injuring at least 37 people, according to Japanese authorities. The tremor was strongly felt in the capital and several neighboring prefectures, but it did not trigger a tsunami.

The earthquake occurred around 2 a.m. local time in the southern part of Ibaraki Prefecture, northeast of Tokyo. According to the Japan Meteorological Agency (JMA), the epicenter was located about 68 kilometers deep.

Magnitude data varies slightly between agencies. The JMA assessed the earthquake at 5.9, while the United States Geological Survey (USGS) estimated it at 5.8.

Strong Shakes Felt in the Tokyo Area

The tremor was significant enough to activate seismic alert systems and public sirens in several areas. In Tokyo and the surrounding prefectures, residents were awakened by strong vibrations.

According to Japanese fire and disaster management authorities, at least 37 people were injured. However, initial reports indicated no major structural damage.

In Saitama, north of Tokyo, a building suffered minor damage. Rescue services continued to assess the situation in the affected areas to determine the exact extent of the damage.

Rail Traffic Disrupted

The earthquake also impacted transportation. Several regional train lines experienced disruptions, particularly in the network operated by East Japan Railway.

In Japan, where infrastructure is designed to withstand significant tremors, railway companies regularly suspend certain lines as a precaution after an earthquake to conduct necessary checks.

No Tsunami Risk, But Increased Vigilance

The JMA confirmed that no tsunami was expected following the tremor. However, the agency urged the public to remain vigilant in the coming days.

Authorities are particularly concerned about potential significant aftershocks. The JMA also highlighted the increased risk of landslides in certain areas following heavy rain recorded on Saturday in the region.

This combination of seismic activity and rain-soaked soils could heighten risks in steep areas. Residents have been advised to monitor instructions from authorities and remain alert for any new alerts.

Another Tremor in a Regularly Affected Region

The Japanese archipelago is situated at the junction of several tectonic plates and regularly experiences earthquakes. The Tokyo region, one of the most densely populated urban areas in the world, is under particularly close seismic monitoring.

Even when an earthquake does not cause major damage, Japanese authorities maintain alert and prevention systems aimed at minimizing the impact on the population and infrastructure.