A strong and deep earthquake registered by the USGS as M6.5 hit the Bonin Islands, Japan region at 02:09 UTC (11:09 LT) on October 25, 2026. The agency is reporting a depth of 492.4 km (306 miles). EMSC is reporting M6.5 the same magnitude and depth.
The epicenter was located 729 km (453 miles) SSE of Kushimoto (population 16 243), 745 km (463.3 miles) SSE of Shingū (population 27 491), 756 km (470 miles) SSE of Kumano (population 16 232), 767 km (476 miles) S of Shimoda (population 21 402), and 807 km (501 miles) S of Shizuoka (population 690 881), Japan.
The Pacific Tsunami Warning Center (PTWC) reported no tsunami threat in a bulletin issued at 02:24 UTC on October 25.
The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building types are heavy wood frame and reinforced/confined masonry construction. No GDP-based economic loss estimate or secondary-hazard assessment was provided.
Epicenter of M6.5 earthquake in Bonin Islands, Japan on October 25, 2026. Credit: TW/SAM, GoogleEstimated population exposure to earthquake shaking
Image credit: USGS
Regional seismicity
References:
1 M6.5 earthquake Bonin Islands, Japan region – USGS – October 25, 2026
2 M6.5 earthquake Bonin Islands, Japan region – EMSC – October 25, 2026