Shallow M5.5 earthquake hits southeast of the Loyalty Islands

An earthquake measuring M5.5 was recorded at 05:50 UTC on September 7, 2026, southeast of the Loyalty Islands. The quake originated at a depth of 10.0 km (6.2 miles), with the epicenter located at coordinates 171.7°E, 23.4°S.

The seismic event occurred in the offshore region southeast of the Loyalty Islands, a remote oceanic area in the southwest Pacific. The coordinates place the earthquake away from large population centers and on the undersea slopes leading away from the islands themselves.

Due to the offshore nature of the earthquake and the sparsely populated location, there are likely limited critical infrastructure elements nearby, with the nearest major facilities being maritime routes and possibly some small ports on the islands.

There is no tsunami threat associated with this earthquake, based on its location and available data.

The significance index for this event is 465 (on a scale that runs through 1 000), which factors in magnitude and estimated impact. The maximum estimated intensity was 0 on the intensity scale, and there were no reported felt reports.

The Loyalty Islands region lies along the complex boundary between the Australian and Pacific tectonic plates. This boundary is characterized by frequent seismic activity due to subduction and transform faulting processes in the southwest Pacific.

This information was last updated at 06:14 UTC on September 7, 2026.