Southern Ocean — A magnitude 4.5 earthquake struck the western Indian-Antarctic Ridge late Thursday night, the U.S. Geological Survey reports.

What happened:

The quake hit at 10:59 p.m. Central Time on Thursday, November 13, at a depth of about 10 kilometers (6 miles) beneath the seafloor. The epicenter sits on the western Indian-Antarctic Ridge, a remote undersea mountain range in the Southern Ocean, far from any populated coastline.

Impacts:

No shaking was reported on land, and no damage has been reported. The earthquake struck far offshore, and the USGS issued no tsunami warning for this event.

What to do:

If you ever feel shaking, drop to the ground, take cover under a sturdy table, and hold on until the shaking stops. Stay clear of windows and heavy objects that could fall. After a quake, check for gas leaks, broken glass, and damaged wiring, and be ready for aftershocks.

Source: U.S. Geological Survey (USGS), November 13, 2026.