Japan on Tsunami Alert After Kumamoto Earthquake
A strong earthquake with a magnitude of 7.1 struck Kumamoto Prefecture, Japan, on Tuesday afternoon (July 28, 2026) local time. The tremor prompted the Japan Meteorological Agency (JMA) to issue a tsunami warning for several coastal areas.
According to the JMA report, the earthquake occurred at 4:27 PM local time. The epicenter was recorded inland around Kumamoto Prefecture and had a fairly strong magnitude.
Meanwhile, data from the United States Geological Survey (USGS) indicates the earthquake’s epicenter was approximately 4 kilometers southeast of Uki, Kumamoto.
The earthquake was classified as a shallow earthquake with a depth of approximately 10 kilometers. This brings the earthquake’s energy closer to the surface, potentially causing stronger shaking in the area surrounding the epicenter.
Earthquake Details:
* Magnitude: 7.1 M
* Time: Tuesday, July 28, 2026, at 4:27 PM local time
* Location: Approximately 4 kilometers southeast of Uki, Kumamoto Prefecture, Japan
* Depth: 10 kilometers
Following the earthquake, the Japan Meteorological Agency (JMA) immediately issued a tsunami warning for several coastal areas facing Ariake Bay and the Yatsushiro Sea.
People in affected coastal areas were advised to evacuate the coast and immediately seek higher ground until the official tsunami warning was issued.
In addition to the potential for a tsunami, local authorities were also alerted to the possibility of aftershocks. With the earthquake’s strength exceeding 7.0 magnitude and its shallow epicenter, further seismic activity was still possible.
As of the publication of this report, Japanese authorities were still investigating the impact of the earthquake, including potential building damage and reports of casualties.


