Shallow M5.7 earthquake hits southeast Indian Ridge

An M5.7 earthquake occurred at 05:41 UTC on May 23, 2026, along the southeast Indian Ridge at a depth of 10.0 km (6.2 miles), as reported by USGS.

The southeast Indian Ridge is a mid-ocean ridge located in the southern Indian Ocean. The epicenter, placed at coordinates 100.0°E, 47.5°S, is situated far from inhabited landmasses and coastal infrastructure, lying within the remote marine tectonic boundary that marks the separation of the Indo-Australian and Antarctic plates.

Given its oceanic location, no major population centers, highways, ports, or critical infrastructure are near the epicenter. The closest human activities would likely be marine navigation routes or deep-sea research ventures in the region.

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

The significance index is 500 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.

The southeast Indian Ridge is a known tectonically active mid-ocean boundary where the Indo-Australian and Antarctic plates diverge, frequently generating moderate to strong intraplate and ridge-related seismic events.

This information was last updated at 06:00 UTC on May 23, 2026.