Shallow M6.2 earthquake hits western Indian-Antarctic Ridge

The epicenter was located about 1 423 km (884 miles) south of Little Grove, and 1 759 km (1 093 miles) south of Perth, Western Australia.

There is no tsunami threat from this earthquake.

The USGS has issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

The quake was followed by M4.8 at 02:31 UTC and M5.2 at 04:56 UTC, both on June 8.

This region is situated in the remote southern Indian Ocean and is characterized by submarine ridges forming part of the boundary between the Indo-Australian and Antarctic tectonic plates. No major islands or populated landmasses are situated nearby, and the area is far from inhabited territories.

Tectonically, the Indian-Antarctic Ridge is an active spreading center where the Indo-Australian and Antarctic plates diverge, resulting in frequent moderate to strong seismic activity along the submarine ridge.

Estimated population exposure to earthquake shaking

Regional seismicity

References:

¹ M6.2 earthquake western Indian-Antarctic Ridge – USGS – June 7, 2025

² M6.2 earthquake western Indian-Antarctic Ridge – EMSC – June 7, 2025