Deep M6.5 earthquake strikes Bonin Islands, Japan region on October 25, 2026

A deep M6.5 earthquake was recorded beneath the Bonin Islands, Japan region at 02:09 UTC on October 25, 2026. The event originated at a depth of 492.4 km (306 miles), with the epicenter located at coordinates 139.6°E, 27.8°N.

This earthquake occurred far beneath the Pacific Ocean, southeast of Honshu, placing it in the remote Bonin Islands region. The area is sparsely populated and largely consists of isolated volcanic islands, with minimal residential communities nearby.

Given its location, the surrounding region predominantly supports maritime infrastructure, such as shipping lanes, and limited port facilities due to its remote and oceanic nature.

There is a tsunami threat associated with this earthquake, based on its location and available data.

USGS issued a green alert for this event, indicating a low likelihood of casualties or damage.

No felt reports were received, and the maximum estimated shaking intensity was 0. The significance index is 650 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.

The Bonin Islands region lies along the boundary where the Pacific Plate subducts beneath the Philippine Sea Plate, part of the larger Izu–Bonin–Mariana Arc system known for deep and powerful seismic activity.

This information was last updated at 02:29 UTC on October 25, 2026.