During the Kumamoto earthquake, we experienced a strong earthquake measuring a seismic intensity of 4 in Fukuoka, which is quite far from Kumamoto. I lived in Tokyo for many years, so I am used to earthquakes. However, Fukuoka rarely experiences earthquakes, so my mother and the others were quite surprised.
Fortunately, nothing fell or was damaged in our house. An emergency alert sounded on our smartphones, and announcements warning people to be careful were also broadcast through the speakers in our neighborhood.
I am saddened by the loss of life and injuries caused by this earthquake.
Timeline and Current Understanding of the Aeon Mall Kumamoto Explosion
Based on the latest available reports, the sequence of events appears to be as follows:
4:27 p.m. on July 28, 2026: A powerful earthquake struck Kumamoto Prefecture, with a maximum seismic intensity of 7 recorded in Uki City and Hikawa Town.
Immediately after the earthquake: People inside Aeon Mall Kumamoto were evacuated. According to reports, approximately 200 people had evacuated the facility before the explosion occurred.
Later: An explosion occurred at the shopping mall, causing part of the second floor to collapse and trapping some employees.
Possible cause: A government official indicated that gas leakage may have been involved, but the exact cause has not yet been officially determined.
Casualties: The latest reports indicate that two people died at Aeon Mall Kumamoto, and several others were injured. Rescue operations and investigations have continued.
Important point: The available evidence suggests that the mall was already being evacuated before the explosion. Therefore, it would be inaccurate to assume that people simply remained inside for an hour after the earthquake without evacuation measures.
Key Issue for the Investigation
The most important questions are likely to be:
When did the gas leak begin?
Was the gas leak detected before the explosion?
Did the gas shut-off and safety systems operate correctly?
Was the building evacuated because of the earthquake alone, or was a gas leak also suspected?
Why did the explosion occur after evacuation had already begun?
Did the earthquake damage gas pipes or equipment in a way that bypassed or defeated the safety systems?
At this stage, it is too early to conclude that the accident was caused by inadequate inspection or a defective gas safety system. The fact that approximately 200 people had already evacuated is important, and the investigation should focus on what happened to the gas system between the earthquake and the explosion.
In other words, the central question is not simply "Why weren't people evacuated?" but rather "Why did a major explosion occur after evacuation had already taken place?"
This distinction is important when assessing whether there was a failure in emergency response, gas safety equipment, maintenance, or the building's emergency procedures.
www.japantimes.co.jp
