M5.4 earthquake strikes remote Balleny Islands region, no tsunami threat

A magnitude 5.4 earthquake occurred at 04:48 UTC on 2026-09-30 in the Balleny Islands region, at a depth of 10 km. The USGS PAGER system issued a GREEN alert, indicating low likelihood of casualties or damage. The remote location in the Southern Ocean implies minimal direct impact, but the event is part of ongoing seismic activity in the region.