TOKYO — A strong earthquake with an estimated magnitude of 7.1 struck Kumamoto prefecture on the island of Kyushu in southwestern Japan at approximately 4:27 p.m. JST on Tuesday, July 28, 2026. The Japan Meteorological Agency reported that the quake originated at a depth of about 16 kilometers in the Kumamoto region.

This earthquake is the first in Japan to reach the maximum intensity level of 7 on the country's seismic scale since the 2024 Noto Peninsula earthquake. The agency warned that strong aftershocks may continue for about a week, with particular caution advised over the next two to three days.

Following the quake, an explosion occurred at Aeon Mall Kumamoto in Kashima, according to retailer Aeon. The company stated that the explosion happened after customers had been evacuated and that the cause and extent of the damage are currently under investigation.

The Fire and Disaster Management Agency reported that part of the mall's second floor collapsed, leaving many people trapped inside. Police officials indicated that between 20 to 30 people, including employees, may still be inside the building.

As of 5 p.m., Kumamoto prefectural police confirmed 12 cases of collapsed houses, four cases of people trapped inside homes, and two fires within the prefecture.

Authorities continue rescue and investigation efforts amid warnings of ongoing seismic activity.

Sources