Remote Islands in Japan Experience Surge of Earthquakes

Wed Oct 15 2025 02:13:53 GMT+0300 (Eastern European Summer Time)

An unprecedented wave of seismic activity records over 800 tremors in the Tokara Islands, with a notable 5.6 magnitude quake.

In a period of just over a week, the Tokara Islands—a remote chain located in southwest Japan—have been rocked by more than 800 earthquakes, raising concerns among the sparse population. The U.S. Geological Survey confirmed a significant 5.6-magnitude quake occurred on Wednesday, marking a series of tremors that have collectively been felt across the region. Since June 21, the Japan Meteorological Agency has logged a staggering total of 870 quakes, with all recorded tremors measuring at least 1.5 on their seismic intensity scale. While typically minor, quakes above 5.0 pose risks to the stability of objects and structures.

This sequence of seismic events is extraordinary even by Japan’s standards, where earthquakes are frequent. The Tokara Islands, known for their volcanic origins and natural hot springs, are home to only 600 residents, many of whom are reporting sleep disturbances due to the continuous tremors. The Japan Meteorological Agency has yet to provide clarity on the root cause of this sudden seismic spike, although it is noted that similar occurrences can indicate the formation of new volcanic islands, drawing parallels to past events near Iwo Jima.

Japan's preparedness for natural disasters remains robust; however, the islands' isolation complicates emergency responses, demanding lengthy helicopter deployment to reach the affected areas. Officials have assured residents that there is no immediate risk of tsunamis, but they have advised caution regarding potential landslides and falling rocks.

Residents of Akusekijima expressed heightened anxiety as they cope with ongoing tremors, illustrating the psychological toll such events can impose on communities in earthquake-prone regions.

Francesca Regalado is a reporter covering breaking news for The Times.