A 6.3‑magnitude quake rattled the remote Bonin Islands, an archipelago 1,200 km south of Tokyo, on Sunday morning at 02:15 UTC, according to Reuters citing the European‑Mediterranean Seismological Centre (EMSC).
The EMSC has not released the event’s focal depth or a tsunami warning, leaving authorities to monitor for potential sea‑wave threats.
Simultaneously, the German Research Centre for Geosciences (GFZ) reported a 6.16‑magnitude tremor off the coast of Vanuatu’s islands at 04:20 UTC, raising concerns over volcanic activity in the region.
Japan’s disaster response agency, JMA, is keeping its coastal stations on high alert, with plans to issue a tsunami advisory if the quake’s depth falls within the critical range of 5–70 km.
Local residents in the Bonin archipelago, who rely on fishing and limited infrastructure, have not yet reported casualties, but officials urge vigilance as aftershocks are expected.
JMA will convene a rapid‑response meeting at 10:00 UTC to evaluate seismic data and decide on further action.