The Japan Meteorological Agency warned Tuesday that stronger earthquakes could occur after Kumamoto Prefecture experienced a maximum seismic intensity of seven [1].

This warning comes as officials monitor widespread seismic activity that could threaten infrastructure and public safety across the region. The potential for further high-intensity tremors increases the urgency for evacuations and structural safety checks in affected areas.

During a second press conference held on July 28, agency officials said that seismic activity is spreading over a wide area [1]. They said that depending on the location and scale of future events, shaking could be even stronger than the recent intensity seven event [1].

Reports from the Aso region indicated a maximum intensity of five-plus [2]. This discrepancy in reported intensities across different zones highlights the volatile nature of the current seismic swarm. Officials are closely monitoring the fault lines, with some indications that the activity may be related to the faults that caused the Kumamoto earthquakes in 2016 [1].

“Seismic activity is spreading over a wide area. Depending on the location and scale, there may be cases where it shakes more strongly than this time,” the agency said [1].

Earlier warnings from the agency also suggested that earthquakes of the same magnitude or even stronger could occur [2]. Residents are urged to remain vigilant as the risk of significant aftershocks remains high. The agency continues to provide real-time updates to mitigate the risk of casualties during subsequent tremors.

“Seismic activity is spreading over a wide area. Depending on the location and scale, there may be cases where it shakes more strongly than this time.”

The warning from the Japan Meteorological Agency suggests that the current seismic event is not an isolated shock but part of a broader regional instability. By linking the current activity to the 2016 fault lines, officials are signaling that the region may be entering a prolonged period of volatility, requiring long-term emergency preparedness rather than short-term caution.