Magnitude 6.6 (mww), 10 km deep, east of the South Sandwich Islands — 58.01°S, 7.84°W. April 3, 2021 at 01:16 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. Felt reports to USGS: 3. https://earthquake.usgs.gov/earthquakes/eventpage/us6000dynd Data: US Geological Survey (public domain).